Technical catalog ABB SACE molded case circuit breakers

1 Technical catalogABB SACE molded case circuitbreakersUL 489 and CSA StandardABB SACE molded case circuit breakers - UL 489 and CSA StandardPreliminary - 1 SDC210003D0201 ABB , Hatton RoadWichita Falls, TX 76302 - : (888) 385-1221 - (940) 397-7000 Fax: (940) to possible developments of standards as well as ofmaterials, the characteristics and dimensions specified in thepresent catalogue may only be considered binding afterconfirmation by ABB - 12/2002 Printed in ItalyABB , boul. DeschampsLachine, QC H8T 3E4 - CANADATel.

2 : (514) 420-3100 Fax: (514) DIAGRAMSOVERVIEWOVERVIEWOVERALL DIMENSIONSCOMPLETE AND PERFECTLY INTEGRATEDIn the range of molded case circuit breakers conforming with theUL 489 and CSA Standard, ABB SACE proposes an entirerange which covers continuous current ratings between 15 A and2500 A and interrupting ratings, at 480 V AC, which can reach100 ranges available are as follows: circuit breakers for power distribution (fitted with thermomag-netic or electronic trip units starting from 100 A) circuit breakers with adjustable magnetic only trip units formotor protection (MCP: Motor Control protection ) molded case switches for use as isolators or switching devicesfor lines, busbars or parts of a plant (MCS.)

3 molded Case Switch)With the introduction of the new Tmax UL series, a single-polecircuit breaker with interrupting rating of 18 kA at 277 V AC isavailable on the American market for the first * Exception for the SACE Isomax VAll ABB SACE circuit breakers in accordance with the UL 489and CSA Standard can be used in installations with wyeor delta distribution systems since use of the circuit breaker at480 V AC is guaranteed, even for the smallest Tmax T1 DIMENSIONSABB molded case circuit breakers ensure high performances inextremely small and compact dimensions.

4 Standardization of thedepth of the smaller sizes allows more rational and less deepenclosure to be used than in the INSULATION*Thanks to the double insulation technique, with all ABB SACE molded case circuit breakers the electrical accessories can bemounted directly in the field with the circuit breaker installed:this allows considerable savings in time and therefore in OVERALL DIMENSIONS AND HIGHPERFORMANCEST hanks to its extremely limited dimensions, Tmax T1 is aunique circuit breaker in its category. Compared with any othercircuit breaker with the same performance(100 A - up to 22 kA at 480 V AC), the overalldimensions of the apparatus are notably , for the first time, ABB SACE hasdeveloped a single pole circuit breaker ,Tmax T1 1P, able to cover a range of currents upto 100 A, with a service voltage of 277 V ARCING CHAMBERSLike the other two Tmax circuitbreakers, the arcing chambers aremanufactured using a gasifyingmaterial and an innovativeconstruction system.

5 The newchambers mean the arc extinctiontime can be reduced, thereby guaranteeing high short-circuitcurrent INSULATIONOnly ABB SACE manufac-tures small-sized molded casecircuit breakers with doubleinsulation. Yet anotherguarantee of safety, not onlyfor the person building theswitchboard, but also for TYPE OF DISTRIBUTION SYSTEMTmax T1 is the smallest circuit breaker with high performances(22 kA) at 480 V AC. Thanks to its electrical characteristics,this circuit breaker can be used with Y or Delta distributionsystems. This is a great advantage in terms of flexibility for itsvarious installation T1.

6 THE LITTLE ONE THAT S 1 SDC210407F00031 SDC210401F0003 Limitedlet-throughcurrentProspectiveshor t-circuitcurrent1 SDC210472F0003 ACCESSORIESThe same accessories as the other two circuit breakers in thefamily can be mounted on Tmax T1, with great benefits interms of reduced stock and simple selection. Even the detailshave not been overlooked, such as the new flange (ABB SACE patent) which avoids securing with screws on the door andcompensates any defects in LIMITATIONT hanks to its high performances, Tmax T1, as well as T2 andT3, is used with great advantages in all the applications where ahigh limitation of the value of the specific let-through energyand the peak of the short circuit -current allows a smaller size ofcables, busbars and all the devices on the loadside of the circuitbreaker.

7 REALLY T2. INTELLIGENCE AND HIGH PERFOR INTERRUPTING RATINGDOUBLE BREAKINGTmax T2 uses the double breaking system with forked movingcontacts. It is thanks to the use of this advanced breaking tech-nique that such high current-limiting performances can beobtained with such small over-all dimensions. Apart fromguaranteeing a high degree ofprotection, these performancesmean better (and thereforemore economical) sizing of thedevices and cables installed onthe load T2 is the only 100 A circuit breaker available with suchhigh performances in such very limited overall dimensions.

8 Aninterrupting rating of 65 kA at 480 V AC can be IN THE PALM OF YOUR UNITSTmax T2 can be fitted witha trip unit of the is the first time that acircuit breaker of this size canbe equipped with an electronicprotection, which adds such awide and varied possibility ofsettings to the high performances, providing unequalledflexibility of , Tmax T2 isavailable with the thermo-magnetic trip performances and largeselection of curves with the elec-tronic release considerably widenthe selectivity functions of theTmax T2 circuit breaker towardsthe load side of the : MOTOR CONTROLPROTECTIONTmax T2-MCP allows particularlyadvantageous coordinations formotor ATMAX T3.

9 225 A IN A DEPTH OF AN ABB SACE ACHIEVEMENTThe first circuit breaker which carries 225 A in considerablylimited overall dimensions compared with any other similarapparatus comes from ABB SACE s research and designengineering capacity. This is a significant evolution for thistype of product because until now no one had managed to physically contain such high performances while stillguaranteeing safety and INSTALLATIONThe notable reduction in theoverall dimensions is immedi-ately converted into installationadvantages. In particular, inches (70 mm) depthtakes Tmax T3 to the samestandard as the two smallersizes, allowing standardization of the mounting supports.

10 Thismeans that, from now on, even a 225 A circuit breaker can beinstalled on a 35 mm DIN : MOTORCONTROLPROTECTIONTmax T3-MCP also allowscoordination for REDUCEDDEPTHWith Tmax T3, the reduceddepth of the apparatus meansbeing able to select switch-boards with smaller overalldimensions, with obviousbenefits in costs as well as sizeand inches INCHES FOR THE FIRST STOCK CODES,STANDARDISATION OF SLOTSS tandardization of the front of the Tmax T3 circuit breaker withthat of the other two circuit breakers in the family means thedoors cut out can be highly standardized.