Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
[02-45:47]
Item Number: 45 -47 QOU Miniature Circuit Breakers and Switches Application Information Table 1: Selection Data Catalog Number One -Pole Two -Pole Three -Pole Terminal Rating 120/240 Vac 120/240 Vac 240 Vac 120/240 Vac 240 Vac Lug Wire Size (AWG) 10K AIR 22K AIR 10K AIR 22K AIR 10K AIR 10A QOU110 — QOU210 — QOU310 15 A QOU115' QOU115VH 0OU215' QOU215H' QOU215VH QOU315' 15 A QOU115HM't — — — — 20A QOU120' QOU120VH QOU220' QOU220H' QOU220VH 0OU320` 20 A Q0U120HM't — — — — 25 A 0OU125' QOU125VH QOU225' QOU225H' QOU225VH 0OU325' 1— #14-#2 30 A QOU130' QOU130VH QOU230' QOU230H' 000230VH QOU330' Cu or Al 35 A QOU135' QOU135VH 0OU235' — QOU235VH QOU335' 40 A QOU140' QOU140VH 0OU240' — QOU240VH 0OU340' 45 A QOU145' QOU145VH QOU245' — QOU245VH QOU345' 50 A QOU150' QOU150VH QOU250' — 000250VH QOU350' 60 A QOU160' QOU160VH QOU260' — QOU260VH 0OU360' 70 A QOU170' — QOU270` — — 001-1370t 80 A QOU180t — Q01_1280t — — QOU3801 90 A QOU190t — QOU — — QOU390t 1—#12-#2/0 100 A QOU1100t — QOU 2100t — — QOU3100t Cu or Al 125 A — — QOU2125t — — — Switch -60 Amperes Max. -240 Vac QOU200 0OU300 1— #14 - #2 Switch -100 Amperes Max. -240 Vac 0OU2000t 0OU3000t Switch -125 Amperes Max. -240 Vac QOU200011 QOU300011 1— #12 -#2/0 UL Listed as HACR type for use with heating, air conditioning and refrigeration equipment containing motor -group combinations and marked for use with HACK type circuit breakers. t High- magnetic trip circuit breakers. Recommended for applications where high initial inrush current can occur and for individual dimmer applications. # Available as Series 1 with forward box lugs only. (No optional terminations) Tripping Mechanisms A tripping mechanism is an assembly within the circuit breaker molded case that causes the circuit breaker to open automatically under sustained overload or short circuit conditions. The tripping mechanisms in two- and three -pole circuit breakers operate such that an overcurrent on any pole of the circuit breaker will cause all poles of the circuit breaker to open simultaneously. Thermal and magnetic factory calibration (with current) is performed on each pole of every Square D circuit breaker. These mechanisms operate to trip the circuit breaker: • Thermal trip • Magnetic trip • Optional shunt trip accessory (see Accessories, page 12) The sensing system is an integral part of a thermal- magnetic circuit breaker. The sensing system continually monitors current flowing through the circuit breaker. It detects abnormal current conditions and, depending on the magnitude of the current, initiates an inverse -time or an instantaneous tripping response. This action causes the tripping mechanism to open the circuit breaker contacts and interrupt current flow. The speed of the tripping process must be controllable and inversely matched to the severity of the overcurrent. QOU miniature circuit breakers have an over - center toggle mechanism for quick -make, quick -break action with positive handle indication. The handle assumes a position between ON (1) and OFF (0) when the circuit breaker has tripped. 09/2005 MO © 2005 Schneider Electric All Rights Reserved 48840 - 048 -01 Instruction Boletin de Directives 02/2007 Bulletin instrucciones d'utilisation Cedar Rapids, IA, USA ECN N891 Series 3 QOU® Circuit Breakers and QYU® Supplementary Protectors Interruptores automaticos QOU® serie 3 y protectores suplementarios QYU® Disjoncteurs QOU® serie 3 et protecteurs supplementaires QYU® Retain for future use. / Conservar para use futuro. / A conserver pour usage ulterieur. HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH • Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E. • This equipment must be installed and serviced only by qualified electrical personnel. • Turn off all power supplying this equipment before working on or inside equipment. • Always use a properly rated voltage sensing device to confirm power is off. • Reptace-altdevlces boars and - covers before turning on power to this equipment. Failure to follow these instructions will result in death or serious injury. INSTALLATION 1. Turn off all power supplying this equipment before working on or inside equipment. 2. Circuit breaker lugs can be rotated to allow access to wire binding screw from top or bottom of circuit breaker. PELIGRO DE DESCARGA ELECTRICA, EXPLOSION 0 DESTELLO POR ARQUEO • Utilice equipo de protection personal (EPP) apropiado y siga las practicas de seguridad electrica establecidas por su Compania (consulte la norma NFPA 70E). • Solamente el personal electrico especializado debera instalar y prestar servicio de mantenimiento a este equipo. • Desenergice el equipo antes de realizar cualquier trabajo en el. • Siempre utilice un dispositivo detector de tension nominal adecuado para -- -con#+rmar la desenergizacion detequ+ - • Vuelva a colocar todos los dispositivos, las puertas y las cubiertas antes de energizar el equipo. El incumplimiento de estas instrucciones podra causar la muerte o lesiones serias. INSTALACION 1. Desenergice el equipo antes de realizar cualquier trabajo en el. 2. Las zapatas de los interruptores automaticos se pueden girar para permitir el acceso al tornillo de sujecion de cables por arriba o por abajo del interruptor. 1. Remove wire binding screw. Retire el tornillo de sujecion de cables. Enlever la vis de fixation de fil. \ 2 Rotate lug body to desired position. Gire el cuerpo de la zapata hasta la position apr s l Faire tourney le corps de la cosse ver la position appropriee. 3. Replace wire binding screw. Vuelva a colocar el tornillo de suiecion de cables Remettre en place la vis de fixation du fil. a brand of Schneider Electric � � • RISQUE D'ELECTROCUTION, D'EXPLOSION OU D'ECLAIR D'ARC • Portez un equipement de protection personnel (EPP) approprie et observez les methodes de travail electrique securitaire. Voir NFPA 70E. • Seul un personnel qualifie doit effectuer ('installation et 1'entretien de cet apparel[. • Coupez toute alimentation de cet appareil avant d'y travailler. • Utilisez toujours un dispositif de detection de tension a valeur nominale appropriee pour s'assurer que ('alimentation est toupee. �Rep aT Cez Cousles dis sl I s — portes et les couvercles avant de mettre I'appareil sous tension. Si ces precautions ne sont pas respectees, cela entrainera la mort ou des blessures graves. INSTALLATION 1. Coupez ('alimentation de I'appareil avant d'y travailler. 2. Les tosses des disjoncteurs peuvent titre tournees pour permettre I'acces a la vis de fixation du fil par le haut ou par le bas du disjoncteur. Series 3 QOU® Circuit Breakers and QYU® Supplementary Protectors Interruptores automaticos 0011.10 serie 3 y protectores suplementarios QYU0 Disjoncteurs QOU® serie 3 et protecteurs supplementaires QYU® MOUNTING FEET NOTE: If circuit breaker was purchased in a bulk pack, mounting feet must be ordered separately. 1. Install mounting feet (A) on each end of circuit breaker. g Flush Mounting R Montaie empotrado Montage encastre OFF (0) — o Abierto (0) Arr6t (0) 2. Use a screw through each mounting foot to fasten circuit breaker inside enclosure. DIN RAIL MOUNTING OFF (0) Abierto (0) Arr6t (0) o BASES DE MONTAJE NOTA: Si el interruptor automatico se compro como parte de un paquete, las bases de montaje se deben solicitar por separado. 1. Instale las bases de montaje (A) en cada extremo del interruptor automatico. Surface Mount Montai Montae para s Montage en su OFF (0) Abierto (C Arr6t (0) 48840- 048-01 02/2007 PIEDS DE MONTAGE REMARQUE : Si le disjoncteur a oto achete dans un paquet oconomique, les pieds de montage doivent etre commandos separdment. 1. Installer les pieds de montage (A) a chaque extramita du disjoncteur. 2. Coloque un tornillo a traves de cada base de montaje para fijar el interruptor automatico al interior del gabinete. MONTAJE EN RIEL DIN 2. Utiliser une vis a travers chaque pied de montage pour fixer le disjoncteur a I'interieur du coffret. MONTAGE SUR RAIL DIN 2. Push down to snap on t. Slide notch onto DIN Rail tip. Empuje hacia abato p Deslice la muesca sobre el Enfoncer pour engage borde del del DIN. Faire glisser I'encoche sur le bord du rail DIN. Rail Pull tab to release. DIN DIN DIN Jale la lengueta para liberar. Riel w Rail DIN Tirersur la languette pour liberer. CONNECTING WIRES CONEXION DE LOS CABLES H .50 in. (13 mm) Electrical equipment should be installed. operated, serviced, and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material. Schneider Electric 3700 Sixth St. SW Cedar Rapids, IA 52404 USA 1- 888- SquareD (1 -888- 778 -2733) www.SquareD.com 0 OFF (0) Abierto (0) Arrdt (0) RACCORDEMENT DES FILS See circuit breaker for lug wire range and tightening torque. Consulte la etiqueta del interruptor automatico para obtener el calibre del cable y at par de apriete. Voir ('etiquette du disjoncteur pour obtener le calibre des fils at le couple de serrage. Solamente el personal especializado debera instalar, hacer funcionar y prestar servicios de mantenimiento al equipo electrico. Schneider Electric no asume responsabilidad alguna por las consecuencias emergentes de la utilizacibn de este material. Importado an Mexico por Schneider Electric Mexico, S.A. de C.V. Calz. J. Rojo G6mez 1121 -A Col. Gpe. del Moral 09300 Mexico, D.F. Tel. 55-5604-5000 www.schneider-electric.com.mx Saul un personnel quatifie doit effectuer ('installation. ('utilisation, 1'entretien at la maintenance du materiel electrique. Schneider Electric n'assume aucune responsabilite des consequences eventuelles decoulanl de ('utilisation de cette documentation. Schneider Canada Inc. 19 Waterman Avenue, M46 1 Y2 Toronto, Ontario 1- 800 - 565 -6899 www.schneider- electric ca © 1990 -2007 Schneider Electric All Rights Reserved / Reservados todos los derechos / Tous droits reserves Catalog September 2005 QOU Miniature Circuit Breakers and Switches Unit Mount (Cable -in /Cable -out) Class 720 CONTENTS Description ................... ...........................Page Application Information .... ............................... page 2 Accessories ............ ............................... page 12 UL Requirements ........ ............................... page 17 Circuit Breaker Tripping Characteristics (Trip Curves) ........... page 19 Dimensions ............ ............................... page 28 QYU One -Pole 277 Vac Supplementary Protectors ............. page 30 QOU Miniature Circuit Breakers and Switches Application Information APPLICATION INFORMATION QOU Miniature Circuit Breaker Types Miniature molded case circuit breakers are intended for use in residential and commercial applications. They are tested and listed according to UL Standard 489 and CSA Standard C22.2 No. 5 -02 for molded case circuit breakers and enclosures. QOU miniature circuit breakers are unit -mount (lug /lug) thermal- magnetic circuit breakers which: • Provide a means to manually open a circuit. • Automatically open a circuit under overload or short circuit conditions. • Feature common tripping of all poles. • Have a Visi -Tripe trip indicator. • Can be flush -, surface -, or DIN rail- mounted. • Has lugs at both ends (cable -in /cable -out construction) • Operate in any position. • Are fully tested, UL Listed, and CSA certified for reverse connection without restrictive line /load markings. Non - automatic Switches QOU non - automatic switches are intended for use as disconnect devices only. UL Standard 489 requires switches to be protected by a thermal- magnetic circuit breaker (or fuse) of equivalent rating. QOU switches are UL Listed for use on circuits capable of delivering not more than 10,000 amperes when protected by an equivalent rated circuit breaker or fuse. QOU switches contain no automatic tripping mechanisms and do not provide overcurrent protection. Description QOU miniature circuit breakers and switches are available for surface -, flush -, or DIN rail mounted applications in one -, two -, and three -pole constructions. QOU miniature circuit breakers are used for overcurrent protection and switching on both ac and do electrical systems. QOU circuit breakers and switches measure 0.75 in. (19 mm) wide per pole. Two- and three -pole circuit breakers are both equipped with an internal crossbar for common tripping of all poles. QOU switches are available in one -pole, 60 ampere and two- and three -pole, 60, 100 and 125 ampere construction. Cases for QOU miniature circuit breakers and switches are constructed of a glass- reinforced insulating material that provides high dielectric strength. Current carrying components are isolated from the handle. The handle position indicates whether the circuit breaker is off, on or tripped. Applications One -pole QOU miniature circuit breakers rated 120/240 Vac are UL Listed for use on 120/240 Vac single - phase, three -wire or 208Y/120 Vac three - phase, four -wire electrical systems. Two -pole QOU circuit breakers rated 120/240 Vac are UL Listed for use on 120/240 Vac single - phase, three -wire or 208Y/120 Vac three - phase, four -wire electrical systems. They cannot be used on 240 Vac delta systems. Use QOU -H two -pole circuit breakers rated 240 Vac on 240 Vac delta and 240 Vac single - phase, two wire systems. Three -pole QOU circuit breakers rated 240 Vac are UL Listed for use on any system where the maximum phase -to -phase or phase -to- ground voltage is 240 Vac or less. For application information on other systems, contact your local field office 0 2005 Schneider Electric All Rights Reserved D❑".9". T=lr.= 09/2005 QOU Miniature Circuit Breakers and Switches Application Information Table 1: Selection Data Catalog Number One -Pole Two -Pole Three -Pole Terminal Rating 120/240 Vac 120/240 Vac 240 Vac 120/240 Vac 240 Vac Lug Wire Size (AWG) 10K AIR 22K AIR 10 K AIR 22K AIR 10K AIR 10A QOU110 — QOU210 — QOU310 15 A Q0U115' Q0U115VH 0OU215' Q0U215H' QOU215VH 0OU315' 15 A QOU115HM't — — — — 20A QOU120' QOU120VH 0OU220' QOU220H' QOU220VH QOU320' 20A QOU120HM't — — — — 25 A QOU125' 000125VH 0OU225' QOU225H' QOU225VH QOU325' 1— #14–#2 30 A QOU130' QOU130VH QOU230' QOU230H' QOU230VH QOU330' Cu or Al 35 A 0OU135' QOU135VH QOU235' — QOU235VH QOU335' 40 A QOU140' QOU140VH 0OU240' — 000240VH QOU340' 45 A QOU145' QOU145VH QOU245' — QOU245VH QOU345' 50 A QOU150' QOU150VH QOU250' — QOU250VH QOU350' 60 A QOU160' QOU160VH QOU260' — QOU260VH 0OU360' 70 A QOU170' — QOU270' — — QOU370t 80 A QOU180t — QOU280t — — QOU380t 90 A QOU19ot — QOU290t — — QOU390t 1— #12 –#2/0 100 A QOU1100t — QOU2100t — — QOU3100t Cu or Al 125 A — — 0OU2125t — — — Switch -60 Amperes Max. -240 Vac 0OU200 QOU300 1— #14 – #2 Switch -100 Amperes Max. -240 Vac 0OU2000t QOU3000t Switch -125 Amperes Max. -240 Vac QOU20001t 00030001t 1— #12 –#2/0 UL Listed as HACK type for use with heating, air conditioning and refrigeration equipment containing motor -group combinations and marked for use with HACK type circuit breakers. t High- magnetic trip circuit breakers. Recommended for applications where high initial inrush current can occur and for individual dimmer applications. t Available as Series 1 with forward box lugs only. (No optional terminations) Tripping Mechanisms A tripping mechanism is an assembly within the circuit breaker molded case that causes the circuit breaker to open automatically under sustained overload or short circuit conditions. The tripping mechanisms in two- and three -pole circuit breakers operate such that an overcurrent on any pole of the circuit breaker will cause all poles of the circuit breaker to open simultaneously. Thermal and magnetic factory calibration (with current) is performed on each pole of every Square D circuit breaker. These mechanisms operate to trip the circuit breaker: • Thermal trip • Magnetic trip • Optional shunt trip accessory (see Accessories, page 12) The sensing system is an integral part of a thermal- magnetic circuit breaker. The sensing system continually monitors current flowing through the circuit breaker. It detects abnormal current conditions and, depending on the magnitude of the current, initiates an inverse -time or an instantaneous tripping response. This action causes the tripping mechanism to open the circuit breaker contacts and interrupt current flow. The speed of the tripping process must be controllable and inversely matched to the severity of the overcurrent. QOU miniature circuit breakers have an over - center toggle mechanism for quick -make, quick -break action with positive handle indication. The handle assumes a position between ON (1) and OFF (0) when the circuit breaker has tripped. 09/2005 0�Ellllllll © 2005 Schneider Electric All Rights Reserved QOU Miniature Circuit Breakers and Switches Application Information Thermal Trip The thermal trip element of a circuit breaker is a root - mean - squared (rms) current sensing device. The thermal element, or bimetal, is constructed from metals with dissimilar rates of expansion bonded together. The thermal element responds to overloads by reacting to the heat generated both by the current flowing through the circuit breaker and by the heat contribution from ambient conditions. The bending force of the bimetal causes the circuit breaker to trip (see Figure 1). The deflection of the bimetal is predictable as a function of current and time. This is the inverse time tripping characteristic of the thermal element, i.e., the tripping time decreases as the magnitude of the current increases. Square D calibrates the thermal elements and they are not field - adjustable. The thermal trip elements are calibrated for 40° C (104° F) ambient temperature, per UL Standard 489 and CSA Standard C22.2 No. 5 -02. v Latch Circuit Breake (1 ntacts Bimetal Current In Normal Conditions Thermal Trip Figure 1: Thermal Tripping Magnetic Trip The magnetic (instantaneous) trip element uses an electromagnetic assembly to trip the circuit breaker instantaneously (with no intentional delay) at or above a predetermined current value. During a short circuit of sufficient magnitude, the high -level current passing through the conductor rapidly increases the magnetic field of the electromagnet that attracts the armature. As the armature is drawn toward the electromagnet, it initiates an unlatching action and opens the circuit breaker contact (see Figure 2). O Circuit Breaker Latch Contacts o 0 0 Spring Current Out Conductor Armature ilf�� Electromagnet 0 Current In Normal Conditions Normal Conditions Figure 2: Magnetic Tripping Trip Indicator When the QOU miniature circuit breaker is tripped, the handle assumes a position between ON (1) and OFF (0) and the red Visi -Trip® indicator (A) appears in a window in the circuit breaker case. Reset the circuit breaker and Visi -Trip indicator by pushing the handle to OFF and then to ON. 0 2005 Schneider Electric All Rights Reserved n❑ 09/2005 QOU Miniature Circuit Breakers and Switches Application Information Line and Load Connections QOU miniature circuit breakers are supplied with two types of lug configuration as standard, depending on the continuous current rating: • 10 -70 ampere one- and two -pole; reversible lugs • 10 -60 ampere three -pole; reversible lugs • Other ampere ratings; forward lugs only The box -type lugs supplied on QOU miniature circuit breakers are UL Listed and CSA certified to accept solid or stranded, aluminum or copper conductors These lugs are UL Listed to be used with wire rated at 140° F, 167° F and 194° F (60° C, 75° C and 90° C), sized according to the NEC 176° F (75° C) temperature rating. See the Accessories section for more information on terminations. Optional terminations, such as quick connectors, are also available. See the Accessories section for more information on terminations. Ring- tongue terminals can be factory ordered using the following catalog number designations: • QOU_ _ _3100 (ring- tongue terminal wired from front) • QOUR_ _ _5283 (ring- tongue terminal wired from rear) Mounting Provisions QOU miniature circuit breakers are supplied with mounting brackets for both line and load side support. Mounting brackets are field installable and can be attached to the front or back of the circuit breaker molded case. See the Accessories section for more information on mounting brackets. Tapped mounting feet can be ordered using the catalog number designation QOU_ _ _3100. All QOU miniature circuit breakers also come equipped with slots in the molded case for DIN rail mounting. These miniature circuit breakers are designed for use with a standard 35 mm DIN mounting rail (DIN /EU 50 022, 0.30 x 1.38 in. [7.5 mm x 35 mm]). Standards Square D brand QOU miniature circuit breakers are manufactured and tested according to the following standards: • UL Standard 489 (File E84967) • NEMA Standard AB1 • Canadian Standards Association CSA C22.2 No. 5 -02 • IEC 60947 -2 • CE Square D brand QOU non - automatic switches comply with: • UL Standard 489 • Canadian Standards Association CSA C22.2 No. 5 -02 NOTE: Circuit breakers are to be applied by guidelines detailed in the NEC and other applicable electrical codes. 5 09/2005 UEE=11111111 0 2005 Schneider Electric All Rights Reserved QOU Miniature Circuit Breakers and Switches Application Information 6 Catalog Numbers Square D brand circuit breakers are ordered by a catalog number that includes the circuit breaker family, description, number of poles, amperage rating and suffix. Table 2: Catalog Numbers Typical Catalog Number: CIO I U 2 CIO Miniature Circuit Breaker Family Description U — Unit Mounted (Lugs on Both Ends) No. of Poles 1 — 1 -pole 2 — 2 -pole 3 — 3 -pole Ampere Rating 10-125 Ampere Rating 00 = 60 A, 000 = 100 A, and 0001 - 125 A QOU Switch Rating Suffix 30 1 H 1 2100 1- and 2 -pole 2 -pole 3 -pole No Letter - Standard 120/240 Vac Rating VH - 22,000 AIR No Letter - 240 Vac Rating VH - 22,000 AIR H -240 Vac Rating VH - 22,000 AIR XXX (i.e., 2100) - Indicates Factory- installed Accessory (See page 12) Ratings for QOU Miniature Circuit Breakers When designing an electrical distribution system, overcurrent protective devices are generally selected based on performance requirements. Factors influencing this selection include system voltage, continuous current, interrupting rating and frequency. QOU circuit breakers are selected by their ratings. A circuit breaker's rating must meet or exceed the parameters of the electrical system on which they are used. Voltage Rating A circuit breaker can be rated for alternating current (ac) or direct current (dc) or both. The established voltage rating of a circuit breaker is based on design parameters such as clearance of current carrying parts and dielectric withstand tests both through air and over surfaces. Voltage ratings indicate the maximum voltage for the electrical system on which the circuit breaker can be applied. The circuit breaker must have a voltage rating greater than or equal to the system voltage. When a circuit breaker clears an overcurrent, it does so in two steps: First, the current sensing system identifies the overcurrent and releases the tripping mechanism. This results in a parting of the contacts. Then the circuit breaker must extinguish the voltage arc across the contacts. If the circuit breaker has the correct voltage rating, it can efficiently extinguish this voltage arc. QOU miniature circuit breakers are rated in the following UL 489 voltages, as shown in Table 3: • 120/240 Vac • 240 Vac • 48 Vdc • 60 Vdc • 277 Vac for QYU, UL 1077 recognized supplementary protector only (not a branch circuit breaker) © 2005 Schneider Electric All Rights Reserved D0�Elllllll 09/2005 QOU Miniature Circuit Breakers and Switches Application Information Interrupting Rating The interrupting rating of a circuit breaker is the highest current at rated voltage that the circuit breaker is intended to interrupt under standard test conditions. Circuit breakers must be chosen with interrupting ratings equal to or greater than the maximum available short- circuit current at the point where the circuit breaker is applied in the system (See Table 3). Table 3: Interrupting Rating Circuit Breaker Type No. of Poles Ampere Rating UL Listed Interrupting Rating —RMS Sym. Amperes AC Volts DC Voltsl 120/240 240 277 48 60 1 10-30 NA NA 5 kA 10-70 10 kA NA NA 5 kA NA 80 -100 10 kA NA NA NA 5 kA QOU 2 10-70 10 kA NA NA 5 kA NA 80-125 10 kA NA NA NA 5 kA 3 10-70 NA 10 kA NA 5 kA NA 80-100 NA 10 kA NA NA 5 kA QOU -H 2 15 -30 NA 10 kA NA 5 kA NA QOU -VH 2 1 15-60 22 kA NA NA 5 kA NA NA = Not Applicable DC ratings do not apply to circuit breakers rated for 10 A Continuous Current Rating The continuous current rating of a circuit breaker is defined by the National Electrical Manufacturers Association (NEMA) as: `The maximum direct current or rms current, in amperes, at rated frequency which a device or assembly will carry continuously without exceeding the specified limits of observable temperature rise." Sometimes referred to as the ampere rating or handle rating of the circuit breaker, the continuous current rating relates to the system current flow under normal conditions. UL Standard 489 states that circuit breakers must carry 100% of their continuous current rating indefinitely (without tripping) at 104° F (40° C) in free air. QOU circuit breakers should be applied, per the NEC, to carry 80% of their continuous current ratings in the intended enclosure. The continuous current rating is indicated on the handle of each circuit breaker. See Table 1. Switching Duty The switching duty (SWD) listing applies only to 15 A and 20 A circuit breakers rated at 277 Vac or less. The circuit breakers are subjected to specified temperature rise tests at predetermined periods during the endurance operations. 09/2005 U�211111111 © 2005 Schneider Electric All Rights Reserved QOU Miniature Circuit Breakers and Switches Application Information UL HACK Type HACK is an acronym that designates circuit breakers certified to be used on heating, air conditioning, and refrigeration loads. The 9th edition of UL489 eliminated special testing requirements for HACR certification, and the 2005 NEC eliminated the requirement for special HACK marking. HACK marking is no longer necessary for circuit breakers used in these applications in states and localities where the 2005 NEC has been adopted. QOU circuit breakers will continue to carry the HACK marking to meet the rquirements of previous NEC Sections 430 and 440 in areas where the 2005 NEC has not yet been adopted. In older versions of the NEC, Article 430 -53(c) required that each circuit breaker must be of the inverse time type, and be approved for group installation. The 2005 NEC eliminated the group installation clause of this article. The following QOU miniature circuit breakers will continue to carry the HACK label: • 10 -100 A, one -pole • 10 -125 A, two -pole • 10 -100 A, three -pole High Magnetic QOU -HM circuit breakers are recommended for area lighting (athletic fields, parking lots, outdoor signs, etc.) when using lamps of inherent high inrush current or individual dimmer applications, or other applications where high inrush current exceeds standard tripping conditions. These circuit breakers are available in 15 A and 20 A only. QOU -HM circuit breakers are manufactured with the magnetic trip point calibrated at a much higher level than standard QOU circuit breakers. Table 4 lists the magnetic trip levels to which high- magnetic circuit breakers are calibrated: Table 4: QOU -HM Circuit Breaker Magnetic Trip Levels QOU -HM Circuit Max. Full -Cycle Magnetic Hold Level Breakers 15 A 21 -35 x In 315 -525 A 20 A 16-26 x In 322 -537 A S © 2005 Schneider Electric All Rights Reserved D❑ 09/2005 QOU Miniature Circuit Breakers and Switches Application Information Ambient Temperature Rating To meet the requirements of UL 489 and the Canadian Standards Association, thermal- magnetic circuit breakers are designed, built and calibrated for use on 50/60 Hz ac systems in a 104° F (40° C) ambient temperature. Time /current characteristic trip curves are drawn from actual test data that meets UL 489 testing requirements. The ambient temperature is the temperature of the air surrounding the circuit breaker. Thermal - magnetic circuit breakers are temperature- sensitive devices, and their rated continuous current carrying capacity is based on a UL specified 104° F (40° C) calibration temperature. The ambient temperature can affect the performance characteristics of the circuit breaker. Thus, when applying a circuit breaker at temperatures other than 104° F (40° C), it is necessary to determine the circuit breaker's actual current carrying capacity under this condition. Further, it may be necessary to rerate the circuit breaker to compensate for these ambient conditions. See Figure 3: Thermal- magnetic circuit breakers use bimetal strips that bend in response to temperature changes. Current flowing through the circuit breaker creates most of the heat that causes the tripping action. The ambient temperature surrounding the circuit breaker either adds to or subtracts from this available heat. Conductors are sized using the ampacity rerating factors shown on the bottom of NEC Table 310 -16 when designing systems for ambient temperatures other than 40° C. Rerating of Thermal- magnetic Circuit Breakers for Ambient Conditions Square D thermal- magnetic circuit breakers are to be applied in ambient temperatures within the range of 14° F to 140° F ( -10° C to 60° C). Use the following rerating guidelines: • Ambient Temperatures Between 77° F and 104° F (25° C and 40° C): — No rerating is necessary. • Ambient Temperatures Between 14° F and 75° F ( -10° C and 24° C): — Thermal- magnetic circuit breakers operating within this ambient temperature range will carry more than their continuous current rating without tripping. Conductor and equipment damage can result if they are not in the same low ambient environment as the circuit breaker. — Nuisance tripping will not be a problem. However, if closer protection of the equipment and conductor is required, the increased current carrying capacity of the circuit breaker at the lower ambient temperature should be taken into consideration. • Ambient Temperatures Between 106° F and 140° F (41' C and 60° C): — Thermal- magnetic circuit breakers operating within this ambient temperature range will carry less than their continuous current rating and must be carefully selected to prevent nuisance tripping. To determine the continuous current carrying capacity of a thermal- magnetic circuit breaker at an ambient temperature other than 104° F (40° C), perform the following steps: 1. Choose the ambient rerating curve in Figure 3 for the specific amperage rating of the circuit breaker you wish to apply. Note that the curve crosses the 104° F (40° C) ambient temperature line at the circuit breaker's rated continuous current carrying capacity (Circuit Breaker Handle Rating on the curve). 2. Follow this curve to the appropriate ambient temperature. 3. Read the adjusted continuous current carrying capacity at this point (on the left axis). 4. Add in any other applicable factors, such as continuous loading, per the NEC requirement. 9 09/2005 MO 0 2005 Schneider Electric All Rights Reserved QOU Miniature Circuit Breakers and Switches Application Information Figure 3: Ambient Rerating of QOU Circuit For example, Figure 3 shows the ambient rerating curves for QOU miniature circuit breakers. What is the continuous current capacity of a 80 A circuit Breaker breaker applied at 104° F (40° C)? A 90 A circuit breaker at 50° F (10° C)? 160 150 140 130 120 110 100 a E 90 80 r Lj 70 m 60 0 U 50 m U 40 30 411 10 By finding 40° C on the horizontal axis and reading up to the 80 A curve, you find that the circuit breaker will carry 80 A, which is its rated current carrying capacity. If the circuit breaker will be used on a continuous load (defined as three hours or more), Section 210 -20(a) of the 2005 NEC requires that loading not exceed 80% of the rating. Here, 80 A x .80 = 64 A. Locate 50° F (10° C) on the horizontal axis and move straight up to the 90 A curve. The circuit breaker will carry 110 A. Again, if the circuit is used on a continuous load, it must be applied at 80% of its rating. In this example the equation is 110 A x .80 = 88 A. 25 A As explained in Section 210 -20(a) of the NEC: 10A "Where a branch circuit supplies continuous loads or any combination of continuous and noncontinuous loads, the rating of the overcurrent device shall not be less than the noncontinuous load plus 125 percent of 00 A the continuous load. 90 A "Exception: Where the assembly, including the overcurrent devices 80 A protecting the branch circuit(s), is listed for operation at 100 percent of 70 A its rating, the ampere rating of the overcurrent device shall be permitted 60 A to be not less than the sum of the continuous load plus the 50 A noncontinuous load." 45 A 40 A Frequency Rating 30 A The standard -rated frequency for circuit breakers is 60 Hz, but Square D 20 A circuit breakers can be applied on 50 Hz systems without thermal or 15 A magnetic rerating. Other frequencies can affect the thermal, magnetic and 10A short- circuit tripping characteristics of circuit breakers. -10 0 20 40 60 (14) (32) (68) (104) (140) Ambient Temperature `C ('F) Figure 4: Frequency Rerating of QOU Circuit Breaker at 400 Hz t.o 9 15.8 a Z .7 m 0.6 10 .5' 0 100 200 300 Current Rating in Amperes Applying thermal- magnetic circuit breakers at frequencies above 50/60 Hz requires special consideration of the effects of high frequency on circuit breaker tripping characteristics. Thermal and magnetic operations must be treated separately. Thermal Tripping Performance at High Frequency At frequencies below 60 Hz, the thermal rerating of thermal- magnetic circuit breakers is negligible. However, at frequencies above 60 Hz, thermal rerating is required. High- frequency operation causes abnormal heat rise in the current - carrying parts because of the skin effect. One of the most common high- frequency applications is at 400 Hz. Figure 4 indicates the thermal rerating multiplier to be used with each circuit breaker family when applied on 400 Hz systems. When applying a 100 A QOU circuit breaker on a 400 Hz system, the circuit breaker's current carrying capacity is as follows: • Non - continuous Loads (less than three hours): Using Figure 4, the QOU circuit breaker may be applied at .78 of rating, or 78 A. • Continuous Loads (three hours of more): NEC Article 210 -20(a) requires that standard circuit breaker loading does not exceed 80% of the circuit breaker's rating when used for continuous loads. Therefore, the current - carrying capacity of a 100 A QOU circuit breaker operating under continuous load at 400 Hz would be 100 A x .78 x .80 = 62 A. © 2005 Schneider Electric All Rights Reserved D❑M-_Rgrm �, 09/2005 QOU Miniature Circuit Breakers and Switches Application Information Interrupting Rating (AIR) at 400 Hz. At frequencies above 60 Hz, the interrupting rating of thermal- magnetic circuit breakers is less than the 60 Hz interrupting rating. Unless specifically marked for use of 400 Hz systems, the interrupting rating of Square D circuit breakers is reduced to 1 /1 0th of the 60 Hz interrupting rating. Magnetic Tripping Performance At frequencies above 60 Hz more current is necessary to magnetically trip a circuit breaker than at 60 Hz. Fig. 3 shows the multipliers of 60 Hz current that it takes to instantaneously trip a circuit breaker when applied at various frequencies. For example, at 60 Hz, it takes 700 A or more to magnetically trip a 100 A QOU circuit breaker per trip curve 730 -7 (page 26). At 400 Hz, it takes 1820 A (2.6 multiplier) or more to magnetically trip the same circuit breaker. Figure 5: 60 Hz Current Multiplier 20 0 1s 10 9 d s 0 7 s 5 rX a v 3 c C1 g 2 a 1.5 1 �n o 0 0 0 00000 0 0 0 0 0 0 0000 0 0 o 0 o o oo N t7 O iA tp I� ODO) O O O O 00000 N 00 O 0 0 0 0 Line Frequency in Hertz 11 09/2005 ❑D l=EIIIIIIII © 2005 Schneider Electric All Rights Reserved QOU Miniature Circuit Breakers and Switches Accessories ACCESSORIES Factory - installed Accessories QOU circuit breakers and QYU supplementary protectors can be supplied with electrical accessories factory- installed. Available factory - installed accessories are shown in Table 5 below. Each QOU circuit breaker or QYU supplementary protector can be equipped with only one (1) factory- installed electrical accessory from the table below. These devices cannot be added, modified or removed once assembled. All electrical accessories occupy one additional pole space, 3/4 in. (19.05 mm). The proper suffix number must be added to the circuit breaker catalog number to order an accessory. Table 5: Factory - installed Accessories Accessory Description Volts, 50/60 Hlz Coil Burden, VA Catalog Suffix When energized by a push button or other pilot device, the shunt trip Used for tripping the 12 ac/dc 60 1042 circuit breaker 24 ac/dc 168 Shunt Trip electrically using a 120 Vac 72 remote control source. Includes coil clearing 208 Vac 228 1021 contact. 240 Vac 288 Auxiliary Switch "A" One contact only; opens when circuit breaker is OFF or tripped; 1200 Contact 5 A max. at 120 Vac, 50/60 Hz Auxiliary Switch "B" One contact only; closed when circuit breaker is OFF or tripped; 1201 Contact 5 A max. at 120 Vac, 50/60 Hz One contact only; closed when circuit breaker is tripped; open when circuit Alarm Switch breaker is ON or OFF; 2100 5 A max. at 120 Vac, 50/60 Hz Ring- tongue Terminal Factory- installed ring tongue terminal, 10 -32 screw, for 1 -, 2 -, and 3 -pole 5283 QOU 10-60 A Wire Binding Screw Hex drive 5/32 in. wire binding screw for QOU 5280 Mounting Foot Tapped mounting foot for QOU, 1- and 2 -pole 10-70 A, 3 -pole 10-60 A 3100 Figure 6: Shunt Trip Accessory Shunt Trip Coil Clearing Switch (opens when circuit The shunt trip accessory is used to trip the circuit breaker from a remote location by using a trip coil energized from a separate electrical source. Shunt Trip Housing breaker is shunt tripped) When energized by a push button or other pilot device, the shunt trip causes the circuit breaker to trip. The handle moves to the tripped position and the Visi -Trip indicator appears. The trip coil has a coil clearing contact to break the coil circuit when the circuit breaker trips. Shunt trips operate at 75% or more of rated voltage. See the wiring diagram in Figure 6. 12 T/ Accessory Terminals Shunt Trip Coil Circuit Breaker 0 2005 Schneider Electric All Rights Reserved 012=111111111 09/2005 QOU Miniature Circuit Breakers and Switches Accessories Figure 7: Auxiliary Switch Accessory Auxiliary Switch Circuit Breaker ON The auxiliary switch accessory monitors the circuit breaker contact status and provides a remote signal indicating whether the circuit breaker contacts are open or closed. When the circuit breaker is OFF or tripped, the auxiliary switch with an "A" contact is open and the auxiliary switch with a "B" contact is closed. When the circuit breaker is on, the auxiliary switch with an "A" contact is closed and the auxiliary switch with a "B" contact is "A" Contact "B" Contact open. See the wiring diagram in Figure 7. Circuit Breaker OFF or Tripped L� �_I "A" Contact B" Contact Figure 8: Alarm Switch Accessory 0__A4_0 Normally -open Alarm Switch Circuit Breaker (Tripped) Circuit Breaker (OFF or ON) 09/2005 Alarm Switch The alarm switch accessory monitors the circuit breaker trip status and is used to provide a remote warning signal indicating that the circuit breaker has tripped. This signal can be a horn, pilot light, or some other indicator. The contact on the standard alarm switch is open when the circuit breaker is in the off or on position and is closed when the circuit breaker is in the tripped position. Alarm switches are actuated when the circuit breaker has tripped as a result of an overload, short circuit or shunt trip operation. See the wiring diagram in Figure 8. D❑ © 2005 Schneider Electric All Rights Reserved 13 QOU Miniature Circuit Breakers and Switches Accessories Field- installed Accessories Table 6: Field- installed Accessories Accessory Description Catalog Number Handle Tie Ties two 1 -pole circuit breakers together. Q01 HT Ties three 1 -pole circuit breakers together; includes lock -off for California Title 24. Q03HT Handle Lock -off Clamp for holding QOU single -pole handle in ON or OFF position. 001 LO (Clamp) Attaches to 1 -, 2 -, or 3 -pole circuit breaker handles. HL01 For padlocking 1 -pole circuit breaker in "OFF' or "ON" position. Attaches to circuit breaker escutcheon —Fixed QOU1 PA For padlocking 2- and 3 -pole circuit breaker in "OFF" or "ON" position. Attaches to circuit breaker escutcheon —Fixed QOU 1 PL Handle Padlock Attachment For padlocking 1 -pole circuit breaker in "OFF' position only QOU1 PAFLA For padlocking 2- and 3 -pole circuit breaker in "OFF" position only (1- and 2 -pole 10-70 A, 3 -pole 10-60 A) QOU2PAFLA One -pole circuit breakers. Attaches to circuit breaker handle — Removable QOHPL Two -and 3 -pole circuit breakers. Attaches to circuit breaker handle— Removable 001 HPL Mechanical Interlock Interlocks two 2 -pole or one 2 -pole and one 1 -pole QOU circuit breakers 002DTILA Mechanical Interlock with Retaining Kit For interlocking two adjacent back -fed circuit breakers in dual power supply applications. Interlocks two 2 -pole or one 2 -pole and one 1 -pole QOU circuit breakers. 002DTIM Mounting Feet For mounting 1 -, 2 -, or 3 -pole circuit breakers (Two mounting feet required per circuit breaker) QOUMFI QOUMF2 QOUMF3 Tapped mounting foot for QOU, 1- and 2 -pole 10-70 A, 3 -pole 10-60 A (Two mounting feet required per pole) QOUMFSI Quick Connectors For forward or reverse wiring of 60 A maximum circuit breakers QOUFR For end connection wiring of 60 A maximum circuit breakers QOUEC Finger Safe Cover For 10-70 A 1- and 2 -pole 10-60 A 3 -pole circuit breakers (Two covers required per pole) QOULFSCI For 80100 A 1 -, 2 -, and 3 -pole circuit breakers (Two covers required per pole) QOUHFSCI 4 -pole jumper bar with front wiring, base, cover, and screw QOU14100JBAF 4 -pole jumper bar with wiring, base, cover, and screw to left QOU14100JBAL 4 -pole jumper bar with wiring, base, cover, and screw to right QOU14100JBAR 4 -pole, 100 A jumper bar base with front wiring 0OU 14100BAFB 4 -pole, 100 A jumper bar base with left -side wiring QOU14100BALB 4 -pole, 100 A jumper bar base with right -side wiring 00014100BARB Jumper Bars for 2 -pole Low Ampere QOUs 4 -pole jumper bar cover 0OU14100CAB Mounting screw for jumper bar cover QOUQCMSB 6 -pole jumper bar with front wiring, base, cover, and screw QOU16150JBAF 6 -pole, 150 A jumper bar base with front wiring 00016150BAFB 6 -pole, 150 A jumper bar base with left -side wiring QOU16150BALB 6 -pole, 150 A jumper bar base with right -side wiring QOU16150BARB 6 -pole jumper bar cover QOU 16150CAB For one 2 -pole circuit breaker QOUCP2 Cover Plates For one 3 -pole circuit breaker QOUCP3 For two 2 -pole circuit breakers QOUCP4 For three 2 -pole circuit breakers QOUCP6 Rainproof Cover Vertical cover for 2- and 3 -pole circuit breakers BCV Horizontal cover for 2 -pole circuit breakers BCH Ring Tongue Terminal Adapter For ring tongue terminal wiring of 60 A maximum circuit breakers COURT 14 © 2005 Schneider Electric All Rights Reserved 0 09/2005 Q01HT 001 LO HLO -1 Handle Tie Handle Lock -off Handle Lock -off QOUIPA Q01HPL Padlock Attachment Padlock Attachment QOU1 PL Padlock Attachment QOU2DTILA Mechanical Interlock Attachment QOUMF1 suffix -3100 or QOUMFSI Mounting Foot Tapped Mounting Foot Bar Base Jumper Bar Cover QOU Miniature Circuit Breakers and Switches Accessories Handle Tie The handle tie accessory converts any adjacent 1 -pole QOU circuit breaker to one independent -trip multi -pole circuit breaker. Handle Lock -off The handle lock -off accessories fasten the handle in the on or off position. The mechanism will still be able to trip and open the contacts even if the handle is held on. The handle lock -off cannot be padlocked. Handle Padlock Attachment The handle padlock attachments allow padlocking the circuit breaker handles in the on or off position. The mechanism will still be able to trip and open the contacts even if the handle is held on. Mechanical Interlock Attachment The mechanical interlock attachment locks the handles of two adjacent circuit breakers to prevent both circuit breakers from being on at the same time. Both circuit breakers may be switched to the off position with the mechanical interlock in place. The mechanism will still be able to trip and open the contacts even if the handle is held on. Mounting Feet Mounting feet are available to mount 1 -, 2 -, and 3 -pole circuit breakers. Two brackets (two kits) are required to mount each circuit breaker. Tapped Mounting Feet Tapped versions of the mounting feet are available to mount 1 -, 2 -, and 3- pole circuit breakers. Two brackets (one kit) are required to mount each circuit breaker. Jumper Bars For added wiring convenience, jumper bars are available for common connections to two 2 -pole or three 2 -pole 60 A maximum QOU circuit breakers. Jumper bars are available with front, left -side, or right -side wiring bases and covers. Cover Plates Cover plates are available to fit one 2 -pole, one 3 -pole, two 2 -pole, or three 2 -pole circuit breakers. The cover plates fasten to the escutcheon and provide 1 in. (25.4 mm) per pole finish trim to cover the circuit breaker. 15 09/2005 0 © 2005 Schneider Electric All Rights Reserved QOU Miniature Circuit Breakers and Switches Accessories Rainproof Covers Ring- tongue Terminal Adapter Forward or Reverse End Quick Quick Connector Connector a Table 7: Optional Terminations Finger Safe Covers Finger safe covers are installed over the top of the terminal connections to prevent accidental contact with energized parts. Two covers are required per pole of each circuit breaker. / QOUHFSCI QOULFSCI High -amp Finger Safe Cover Low -amp Finger Safe Cover Rainproof Covers Rainproof covers plates are available for vertical mounted 2- and 3 -pole circuit breakers and horizontal mounted 2 -pole circuit breakers. Ring- tongue Terminal Adapters Ring- tongue terminal adapters are available for ring tongue terminal wiring of 60 A maximum circuit breakers. Reversible Lugs For added wiring convenience, QOUR 10 -70 A 1- and 2 -pole, and 10 -60 A 3 -pole QOUR circuit breakers have reversible lugs. Removing the wire binding screw allows the captive lug body to be rotated and the wire binding screw reinstalled. This permits the circuit breaker to be flush mounted and then conveniently wired from the back. Quick Connectors In addition to the reversible lugs previously described, 10 -70 A 1- and 2- pole, and 10 -60 A 3 -pole A QOU circuit breakers have optional field installable quick connectors. Quick connectors provide a convenient way to attach two wires using two standard, 0.25 in. insulated quick connectors per terminal (30 A maximum per connector). Quick connectors are not furnished with the circuit breakers, but are commercially available. Connectors suitable for wire sizes up to AWG #10 can be selected for use with these circuit breakers. Type Wiring Method Quantity Catalog Number Field- installed Quick Connectors Forward or Reverse 1 QOUFR Field- installed Quick Connectors End Connection 1 QOUEC Factory- installed Quick Connectors One each end of QOU for end connection — QOUQ prefix Available only on 10-60 ampere circuit breakers. 16 © 2005 Schneider Electric All Rights Reserved E❑ 09/2005 QOU Miniature Circuit Breakers and Switches UL Requirements UL REQUIREMENTS A UL label on the QOU miniature circuit breaker indicates that the circuit breaker meets the requirements of UL Standard 489 for molded case circuit breakers. Underwriters Laboratories Inc. (UL), the Canadian Standards Association (CSA), the National Electrical Manufacturers Association (NEMA), and the National Electrical Code (NEC) all define a circuit breaker as "a device designed to open and close a circuit by non - automatic means and to open the circuit automatically at a predetermined overcurrent without damage to itself when properly applied within its rating." A molded case circuit breaker is one "that is assembled as an integral unit in a supportive and enclosing housing of insulated material." A UL label also means the production procedure is monitored by UL inspectors for continuing conformance to UL performance requirements. These requirements are based on sound engineering principles, research, records of test and field experience, and information gathered from users and inspection authorities. UL 489 and CSA 22.2 #5 -02 Test Procedures Limited Available Fault Current Tests UL and CSA require a series of tests on a single set of sample circuit breakers for compliance with UL Standard 489. The tests for thermal- magnetic circuit breakers are described below and conducted in the order presented. Since QOU switches are derivatives of QOU miniature circuit breakers,they do not have to go through an overload test. They have to complete a withstand test (paragraph 11.1.7). 200% Thermal Calibration Each pole of the circuit breaker must trip within a specified time limit when carrying 200% of its ampere rating. 135% Thermal Calibration With all poles connected in series, the circuit breaker must trip within a specified time limit when carrying 135% of its ampere rating. Overload The circuit breaker is operated making and breaking 600% of its ampere rating, but not less than 150 A. For circuit breakers through 100 A, the number of 600% operations is 35 manual open and close and 15 manual close and automatic open. For 125 A circuit breakers, the number of operations is 50 manual open and close. Temperature Rise While carrying 100% of rated current at a 104° F (40° C) ambient temperature and mounted in open air, the circuit breaker is checked for temperature rise on a wiring terminal. The temperature rise must not exceed a 122° F (50° C) rise above ambient temperature and must be within specified limits. Endurance The circuit breaker must successfully complete the number of switching operations shown in the table below. One switching operation includes a motion to turn the circuit breaker on and a motion to turn the circuit breaker off. Table 8: QOU Circuit Breaker Switching Operations Amperes Full Load Operations No Load Operations 0-100 A 6000 4000 125 A 4000 4000 17 09/2005 © 2005 Schneider Electric All Rights Reserved QOU Miniature Circuit Breakers and Switches UL Requirements 18 Calibration Retest Both the 200% and 135% thermal calibration tests are repeated. Short Circuit For circuit breakers rated 240 V, two short- circuit tests per pole and one test with all poles connected in series are performed. For example, a three -pole circuit breaker receives seven short- circuit tests. For circuit breakers rated 120/240 V, three tests are made with all poles connected in series. The circuit breaker is connected to the test circuit using wire correctly sized for the rating of the circuit breaker. The line leads are not more than 4 ft. (1.22 m) in length and the load leads are not more than 10 in. (25.4 cm) in length. NOTE: Successful testing requires that the current be interrupted while maintaining the integrity of all conductors and connections. Trip Out The 200% thermal calibration test is repeated following the short- circuit tests. Dielectric The circuit breaker must withstand, for one minute, twice its rated voltage plus 1000 V: • Between line and load terminals with the circuit breaker open, that is, with the circuit breaker either tripped or off. • Between terminals of opposite polarity with the circuit breaker open. • Between live parts and the overall enclosure with the circuit breaker both open and closed. No conditioning of the circuit breaker can take place during or between tests. There also can be no failure of functional parts at the conclusion of the sequences. High Available Fault Current Tests After qualifying a set of circuit breakers to the standard tests, a manufacturer can have additional circuit breaker samples tested on higher than standard available fault currents. The following performance requirements apply: 200% Thermal Calibration Each pole of the circuit breaker must trip within a specified time limit when carrying 200% of its continuous current rating. Short Circuit With the load side terminals connected by 10 in. (25.4 cm) lengths of specified wire, the circuit breaker is exposed to a short- circuit current. After successful interruption, the circuit breaker is reset and closed again on the short circuit. An additional short- circuit bus - connected test is required for frame sizes or construction groups below 100 A. Trip Out Each pole of the circuit breaker must trip within a specified time limit when carrying 250% of its continuous current rating. Dielectric Withstand The circuit breaker is subjected to twice its rated voltage, but not less than 900 V 0 2005 Schneider Electric All Rights Reserved D❑� 09/2005 QOU Miniature Circuit Breakers and Switches Circuit Breaker Tripping Characteristics (Trip Curves) CIRCUIT BREAKER TRIPPING CHARACTERISTICS (TRIP CURVES) The tripping characteristics of thermal- magnetic circuit breakers are represented by a characteristic tripping curve that plots tripping time versus current level. See page 20. The curve shows the amount of time required for a circuit breaker to trip for overcurrent through the entire tripping range of the circuit breaker. Manufacturing tolerances result in a curve that is a band bound by minimum and maximum values of total clearing time. Total clearing time is the sum of the sensing time, unlatching time, mechanical operating time, and arcing time of the circuit breaker. For currents in excess of 135 percent of the circuit breaker rating at ambient temperature (40 °C /1 WF), the circuit breaker will automatically open the circuit within limits specified by the band. Thermal Tripping Characteristics The upper left portion of the characteristic tripping curve displays the thermal response of the circuit breaker. On overcurrent levels, up to the instantaneous tripping level, thermal tripping occurs when the bimetal in the circuit breaker responds to the heat associated with the overcurrent. The bimetal deflects, unlatching the mechanism and mechanically causing the circuit breaker to trip and open the circuit. The larger the overcurrent, the faster the circuit breaker operates to open the circuit (inverse time). Magnetic (Instantaneous) Tripping Characteristics The lower right portion of the characteristic tripping curve displays the magnetic (instantaneous) tripping response of the circuit breaker. This takes place when overcurrents of sufficient magnitude operate the magnetic tripping mechanism. Magnetic tripping occurs with no intentional delay. 19 09/2005 DOEE�11 © 2005 Schneider Electric All Rights Reserved QOU Miniature Circuit Breakers and Switches Tripping Curves Curve 730-1 TRIPPING CURVES MULTIPLES OF RATED CURRENT FDI 00 MOLDED CASE CIRCUIT BREAKERS CHARACTERISTIC TRIP CURVE NO 730-1 sago CIRCUIT BREAKER INFORMATION + 7 —z A_ A I. DO, QDu only. The t20IZ40 t,2 DO, Qou DO, 00 -EM 10 l 240 1201200 during DO DO -EM Co o 1 1 20/240 140 40 'C Co-K DO -5 N Qo.VV`N . l o o 120 1201240 11 lipp'lip"ll, This curse 11 to be used for pl and .... dillitol purposes only. The 11 the bottom di— on —d— 11 the page 11011d 11 used during All date based 11 40 'C 11— lid Ill Terminations 11, 11d, with II 11 lipp'lip"ll, 11,911 end zoo 1 zoo M^1IM1M SINGLE —ILETIPHIPTIVI61-2 'ic BASED ON NEMA AB-2,1980 -8 I j ljlii To to t - ------ --- 10 9 z 7 o L) C' z 7:F I FL to MAXIMUM RIN TIME G IMUM C (AT 50 H O11Z) Z� (AT E —4— 1 CYCLE— -o I CYCLE (50 HZ) ots (60 HZ) --- 01 '/2 CYCLE— lb CYCLE (5o HZ) (60 HZ) ..7 ---------- lo EZ-aAlp" SQUARE 3--)e MULTIPLES OF RATED CURRENT 20 @ 2005 Schneider Electric All Rights Reserved 09/2005 Curve 730 -2 2 0 N 2 i H 09/2005 1 CYCLE .ors (60 HZ) —Y CYCL (60 HZ) QOU Miniature Circuit Breakers and Switches Tripping Curves MULTIPLES OF RATED CURRENT DO MOLDED CASE CIRCUIT BREAKERS CHARACTERISTIC TRIP CURVE NO 730 -2 CIRCUIT BREAKER INFORMATION :000 c �vwtg. elm 00 -K �n5 t20 1 curve le to be aced for Appeal- and cuo,dinetion pulp —$ only. The soo C Chia c oordineuoo etudl— AB timelcmmnt cnarecterlellc curve de la Ia baaed - AO 'O eminent cold stem. I pop Termmenone era made wnh conduct,,, of appropriet, length and -ug,. I MAXIMUM SINGLEPOLETRIPTIMESAT25iC >a IBASED ON NEMA AB -2. 1980 w I i $ $ 8 8 � 8� 88�$ S 8 8 8 8 8 8888iao --'TT ( ( .5 � t t J l J ... . A ' J MAXIMUM C CLEARING TIME- O0 ... -_. I 1 14 7 a SQUARE D® MULTIPLES OF RATED CURRENT ❑D � © 2005 Schneider Electric All Rights Reserved 21 QOU Miniature Circuit Breakers and Switches Tripping Curves Curve 730 -3 22 MULTIPLES OF RATED CURRENT 00 MOLDED CASE CIRCUIT BREAKERS - - CHARACTERISTIC TRIP CURVE N0730 -3 CIRCUIT BREAKER INFORMATION A 00 -K 20 120 1 papa 00. OOU, 00 -VH, OH 20 120/240 1 00 -PL 20 120_0 1 2 -. OO -PL 20 "0 3 cais curve V1 to ne usetl for application antl ca,rdination Du rposes only. Tit. EZ -AMP o arlay feature at the bIttI1 of the Deg, should E, usetl during ommmm� aIud- At data na,ad on ao C ammam oold .—I. _. Terminations are maee with conductors or appropriate length end ratings. N s Zs 0 U 2 ' BASED ON NEMA AS-2,19W 1 S f J iTT1Ti'T -- J — J _ o: 1 CYCLE ws (60 HZ) nm Y6CYCL (60 E H SQUARE n° © 2005 Schneider Electric All Rights Reserved D❑ Y? 0 5 HZ) `50 HZ) Ez -sup 20 MULTIPLES OF RATED CURRENT 09/2005 Curve 730 -4 09/2005 QOU Miniature Circuit Breakers and Switches Tripping Curves MULTIPLES OF RATED CURRENT 00- MOLDED CASE CIRCUIT BREAKERS CHARACTERISTIC TRIP CURVE NO. 730 -4 CIRCUIT BREAKER INFORMATION Gmlrt &eakerPrefi Corrtruws Ampere PaB�9 AC m Vobge Ea N N Palm 00a( OO .CO -HVM 25 15-25 120 2+0 I 2 00 -OD..O D..P -VH 15620 12fV2Y0 Im.OLL .0011 CO.000.0 D.O VH. OOVH, OR, OOU -vH W. COU, CO -HID, OOVH. W. OOU -VH 151420 15620 1202+0 2+0 2 3 CO. 000. W -H10. GO-VM, p1, OOU -VH 25 120200 1, 2 00 -EM 00, WU.00 -HIO. G6VH, OH, CO- 25 25 1202+0 200 2 0 OO N 15-25 15-25 1202 +0 120 z z WS - 00 SWN 15-25 1202+0 3 O FL OOPS 25 25 120200 200 2 1 3 0 � © 2005 Schneider Electric All Rights Reserved 23 QOU Miniature Circuit Breakers and Switches Tripping Curves Curve 730 -5 MULTIPLES OF RATED CURRENT QO- MOLDED CASE CIRCUIT BREAKERS oaoo CHARACTERISTIC TRIP CURVE NO. 730 -5 moo a0oo Jt^ wao CIRCUIT BREAKER INFORMATION .000 : woo 15co 24 0wh8raaaer FreMx Pnuo oa,a Ratlrg Maximum Ac vooaea NumUs a ro�ea �K 30 20 00-VH. p1. COU-vH oo* 30 ao 120240 zda 1'2 z OHx)k LLw 90 240 a m oou. oo-H, 00.000, oowo. OOU -VH oo-F� 3040 aa-oo 12Mda 1za2da 2 z 00. WN 00-40 240 3 O SWN O 30440 30840 20 140 2 3 OpU -w yH 1 MZV240 1 0 2005 Schneider Electric All Rights Reserved O EMMMEW 09/2005 MEE - rrn1_ ■ o ®a � ®ran■ ran■�1m//■ aao1■■mmia man iissisiiii�® HOME 111 ■� /IN ® ®���HI� ® ■ ■��I��MN■■ mill i®li unilii m®mo®lii mmung ® Mi11111 ® N 1111 MEN 111 ■ ®1111 1 a1111I ■ �INI ■111111I■ ■o11 Nil 111 1111111 X1111 ■��11III= 111 1111 ■■MINI ■■1;111111■ ■■■®111iI. son aarn.nMOMME / /wa®nmo //naaaan�u /� 1 tila�Nan ■ ■N�nnnl ®an ■ ■fi���aOaH ■ ■��� 111 1 ® 1111111 1111 1 � �1111i = I ® X11111 oilN1 111111 11011111 1 ® X11111 1111111 I ■ �11n1 0111 ® ■11111 ��I�a N= aN NM�� =MEE ��mmosom ■ ■��IaNOan ■ ■��I�aa ® ® ■ ■/11 ��i�11�����l�oi� ® ®�■ ■iii II��I 11 iii 111 I ®11111 ■ ®11111® ®11111 I11NI ■ ■M111iI ■ ■�1111I 11111 �■�11111����1111111 11NI 11111 ■ ■11111■ ■_ 111 I SQUARE M 0 2005 Schneider Electric All Rights Reserved O EMMMEW 09/2005 QOU Miniature Circuit Breakers and Switches Tripping Curves Curve 730 -6 N MULTIPLES OF RATED CURRENT soda % I I „ eaoo 00 MOLDED CASE CIRCUIT BREAKERS CHARACTERISTIC TRIP CURVE NO 730 -6 CIRCUIT BREAKER INFORMATION auu� Ce -hei., sass a000 00 -HID �aoo t000 GO EM Continuo p II, pe AC Valeq olePoMa 1.2 2 50 5060 120/200 120Y240 GO. OOU 00 5010 •OTO 120M40 240 1.2 3 OOU GGC-SWN s0 240 ] 2alp xaoo OP PL 50 40-60 1202240 12W40 3 2 00 -PL 40 -e0 240 ] 09/2005 U� 0 2005 Schneider Electric All Rights Reserved 25 T' Tina curve is 10 be Ilea for appuc.tloo end .... dme0on putpoaes only. Th. EZ -AMP overlay Is. .1. et the bottom o1 the p.0e should be used during coo rdln.tlon studies. All timelcurrent cneredarlatic cure. data le based on 40'C e,bleet cold slam. Re I — - 1-14-w : ---- - -r -- Terminations she o,do witn c,.d,M ,s of approprlats length end retinge. - sm aoo I >s0 I MAXIMUM SINGLE POLE TRIP TIMES AT 25jC aao BASED ON NEMA ^1 2, 1990 So es so So „ A 0 m A m t � M • � � 7 s N z s — 1 • O 4 y. - m W � 2 t i i • I A, A _ '_ 70A. 60A. .... �.. .... .._ ...i. — ._. .. - .......� -y —�— _. _.. _ 4 1 ..... ...... ..... .. ....1 f I] s _.. .a '00 MAXIMUM CLEARING TIME (AT SO NZ T6oHx1 — — _ — — — { - ... j a a 1(SOCLE - 1 CYCLE ) .ols (60 HZ) ... o1s ms —'h CYCLE —_ y CYCLE 01 (50 HZ) m (60 HZ) 883 R S& 3 F 8 &8 A 8 8 B B &8.aos 1 Ez -avp° 70 50 60 SQUARE DO MULTIPLES OF RATED CURRENT „04 0 IT1111— U� 0 2005 Schneider Electric All Rights Reserved 25 QOU Miniature Circuit Breakers and Switches Tripping Curves Curve 730 -7 26 MULTIPLES OF BATED CURRENT r x000 00 MOLDED CASE CIRCUIT BREAKERS .poo .000 CHARACTERISTIC TRIP CURVE NO 730 -7 soon s000 CIRCUIT BREAKER INFORMATION 3[cp sc0o pe B f7a -- :...,.. GO. OOU 80100 120/2"0 2 00. OOU 80100 2"0 J -- --- - - -- - - - This curve is t0 b, usad for application end.— dinat— pur,— only. Th. lsoo tsop EZ -AMP overlay lecture et the bottom .1 the page should b. used during All limo /currant characlorialic curvy data is ba.ed on n0 C ambient —Id start. Terminations ere made -b conductors o1 appropriate length end rating.. sod scp MAXIMUM SINGLE POLETRIPTIMES AT 251C xoo \ BASEDONNEMAAB -2,1M ,s0 \ z 2 U z 1 CYCLE- - CYCLE - - -_ - -- (50 HZ) (60 HZ) y CYCLE- - 'A CYCLE (50 HZ) (60 HZ) 8 E E my A S E E g E E E Ez -"Alp 90 SQUARE D° MULTIPLES OF RATED CURRENT © 2005 Schneider Electric All Rights Reserved f a m u i .r s A 09/2005 QOU Miniature Circuit Breakers and Switches Tripping Curves Curve 730 -9 5 MULTIPLES OF RATED CURRENT OO MOLDED CASE CIRCUIT BREAKERS CHARACTERISTIC TRIP CURVE N0 730 -9 soaa soap CIRCUIT BREAKER INFORMATION wasa Ampa.e Rating Ac votress or voles - 00. OOU 125 1 120/240 1 2 This curve 1, to be used far sppllcetlon en0 coo rd- nation pur I The poses on y xoao _ _ - .� _. Aso EZ -AMP overlay feature et the bottom of the page sh,uId be used du hg aoomineoon studies. tsm - -� - -- 7. - -- All hm0 /currant charactaricbc curve data is based on 40 C t cold .tart. Terminations ere made with conductors of apPrOPriste length end rating _ .. _. xm : I xm :. 0 m I 7s m zP is xo is I a s s 5 , s O w a 1 t _ W a _ :.. 1 � { t J 'O0 W MAXIMUM CLEARING TIME 'w (AT 50 HZ) (AT60HZ) {� _- - 1 CYCLE, - 1 CYCLE (50 HZ) .ats (60 HZ) y CYCLE- m - 'A CYCLE �50 HZ) _ (60 HZ) ° ° 9 ° °e R t ez -amp° 125 SC2LIARE D® MULTIPLES OF RATED CURRENT 09/2005 © 2005 Schneider Electric All Rights Reserved 27 QOU Miniature Circuit Breakers and Switches Dimensions DIMENSIONS 1 & 2 pole 10A - 70A and 3 pole 10A -60A QOU Circuit Breakers 2.63 (67) 0.68 (17) Q (18) li� O 0.3690 >,_a 4.05 1.37 (9) o O1; (103) (35) 0.26 6; 9 0.61 @ (16) 0 8 0.75 (19) 1.18 0.76 (30) (19) —IV Typical Both Ends I � I C P15 L 0.75 , 2.95 (75) _2.03 i 0.35 0.38_y� (51) I I (9) 0.24 (10) 1.151 I (6) (29) I Typical Both Ends I -T 2.25 III I I I O 1 (57) 00 5.00 I (127) 08 0.13 (3) 0.18 (5) 11 I I L J L Mounting Brackets to be installed on both ends as shown. Catalog Numbers: One - Pole— QOUMFI Two - Pole— Q0UMF2 Three - Pole —QO U M F3 0.75 75 (19) 9) _ _ _ _ _ — 1.19 — — — — - — — — — —I (30) 15 I C I 'HAI H" 11 �35 x 7.5 mm DIN Rail Visi -Trip Window I _ 0.62 j� (16) Accessory Package Typical Any Circuit Breaker (Shunt Trip, "A" or "B" Switch, Bell Alarm) � 1 (554) 4) 0.33 (8) Typical x_2.25 (57) Both Ends Dim.: in. / pulg / po mm 28 © 2005 Schneider Electric All Rights Reserved D❑ 09/2005 QOU Miniature Circuit Breakers and Switches Dimensions 80A - 125A Circuit Breakers 0.45 (11) 5.14 ° (130) 0.58 (15) 0.17 (4) 3.21 Auxiliary ~ (82) Device 0.62 f (16) 6.30 (160) 0.24 IM 111 Iw■ 1 Ihli� 111 !� 9 M! 1111,E FOR) I� �I IIIII� �• 26° 2.07 22° Reset (53) ° On 21" / 1.32 Off 1.00 (34) 3 2.25 (25) 0.58 Tripped (57) (15) 1.89 (15 ( 0.27 (48) (1 (48) ) (22) 0.63 ( ) 1.20 (16) (30) O 2.96 IHER O 0.26 (75) ®® (7) 2.37 1.72 (44) (60) 0.82 ) O ❑ 0.74 � O 0.82 (21) 1 (19) } 0.39 1.09 1 -Pole 1.48 (10> a.a5 (28) (38> (113) 2 -Pole 2.21 (56) 6.78 3 -Pole (172) Dim: in. / pulg/ po mm 09/2005 i9 SQUARE D 29 © 2005 Schneider Electric All Rights Reserved QOU Miniature Circuit Breakers and Switches QYU One -Pole 277 Vac Supplementary Protectors 30 QYU ONE -POLE 277 VAC SUPPLEMENTARY PROTECTORS Description QYU 277 Vac supplementary protectors are available for surface, flush or DIN -rail mounting in 1 -pole construction. Supplementary protectors are 3/4 in. (19.05 mm) wide. Table 9: Selection Data UL Component Recognized Interrupting 5000 RMS Symmetrical Amperes 1 -Pole -277 Vac Ampere Rating Catalog Number Terminal Lug Wire Size (AWG) 10 QYU110 1 — #14 -2 Cu or Al 20 QYU 120 25 QYU 125 30 QYU 130 Applications One -pole QYU 277 Vac supplementary protectors are UL Recognized Component (meets UL 1077) to be applied on systems where the maximum phase -to- ground voltage is 277 Vac or less, including use of 240 Vac corner grounded delta "grounded B" systems. These devices are designed to provide supplemental overcurrent protection in accordance with Article 240 -10 of the 2005 NEC, which states that thermal- magnetic supplementary protectors cannot be used to replace the primary branch - circuit protection in an application. When used in combination with branch - circuit protection, as required in Article 210 of the 2005 NEC, these supplementary protectors can be used to protect lighting fixtures, appliances and other equipment or internal circuits and components of equipment. Tripping Characteristics The QYU trip characterstics are identical to those of the same amperage QOU circuit breaker. See trip curves 730 -1, -3, -4 and -5. 0 2005 Schneider Electric All Rights Reserved D❑EE�11111111 09/2005 QOU Miniature Circuit Breakers and Switches Dimensions DIMENSIONS OYU One -pole 277 Vac Supplementary Protectors 2.63 o (67) 0.68 (17) (6) Qo 1 16 0.36- 9 °90 O 4.05 1.37 ° (103) (35) 0.26 O 0.61 q (16) Q F 0.13 (3) 0.75 (19) 1.18 0.76 (� (30) (19) I I Typical 21 1 Both Ends 15 0.62 (16) 09/2005 2.95 (75) 2.03 0.35 X1 8 (51) (9) 0.24 1.151 II (6) (29) 11 II Typical II II Both Ends I a[ I 2.25 0 (57) II O° 5.00 �} 0 (127) J $ II � 11 0.18 (5) I I 11 J L Mounting Brackets to be installed on both ends as shown. Catalog Numbers: One - Pole— QOUMFI D❑!=� 0 2005 Schneider Electric All Rights Reserved 31