Short-Circuit Breaker Capacity High Quality ElectromagneticDW45
ACB Intelligent Universal air circuit breaker 2500a Merlin
Gerin ACB 1.1 Application scope Dw45 Acb Intelligent Universal Air
Circuit Breaker 2500A Merlin Gerin AcbDW45 series air circuit
breaker is suitable for the circuit of AC 50Hz/60Hz with rated
service voltage 400V, 690V and rated service current up to 6300A.It
is mainly used to distribute electric energy and protect
circuits and electric equipment against over-load,
under-voltage, short-circuit and single-phase earthing
fault.With intelligentized and selective protection
functions, the breaker can improve the reliability of power
supply, and avoid unnecessary power failure.The breaker is
applicable for power stations, factories, mines (for 690V)
and modern high- buildings, especially for the distribution
system of intelligentized building.1.2 Standard:IEC/EN
60947-2. 2.Operation conditions2.1 Temperature
condition:-5°C~40°C;The average value within 24h shall not
exceed+35°C(special situation excluded);2.2
Altitude:≤2000m;2.3 Pollution grade:Grade 3;2.4 Air conditions:At
mounting site, relative humidity not exceed 50% at the max
temperature of +40°C, higher relative humidity isAllowable under
lower temperature,RH could be 90% at +20°C, special measures
should beTaken to occurrence of dews; 2.5
Note:Without the intelligent controller, the
breaker functions as a switch-disconnector. 1.With
drawable-breaker;2.Fixed-breaker3.Intelligent
controller;4.Operating mechanism;5.Auxiliary
contact;6.Locking-device;7.Arc chute;8.Secondary connecting
part;9.Wire-cable mechanical interlock;10.Connecting-rod type
mechanical interlock;11.Shunt release;12.Closing
electromagnet;13.Under-voltage release;14.Motor-driven
energy-storage mechanism;15.Handle;16.Fixed
plate.Application of Intelligent Air Circuit Breaker(ACB)SW1 (DW45) series universal Air circuit breaker(hereinafter referred to as breaker)is suitablefor the circuit of AC 50Hz with rated voltage 400V, 690V and rated current up to 6300A.It is mainly used to distribute electric energy and protect circuits and power-supplyequipment from overload, under-voltage, short-circuit and single-phase earthing. withintelligentized and selective protection functions, the breaker can improve the reliabilityof power supply, and avoid unnecessary power failure. The breaker is applicable forpower stations, factories, mines(for 690V) and modern high-buildings, especially for thedistribution system of intelligentized building. This breaker conforms to IEC60947-2 andGB14048.2 and CE. Feature of Intelligent Air Circuit Breaker(ACB)1. Rated AC current: 630A-6300A2. Short-circuit breaking capacity: 80KA-120KA3. Rated Voltage: under AC690V4. Two Types: draw-out type and fixed type5. Equipped with many types of intelligent controllers, of different functions.6. Both the 3 Pole and 4 Pole air circuit breakers are available.7. Standards: IEC60947-2, GB14048.2,CE.Categories of Intelligent Air Circuit Breaker(ACB)1. Our air circuit breaker can be of two installation types: fixed type and draw-out type2. Number of poles: 3 pole and 4 pole3. Operation type: manual operation, auto operation4. Trip types: Intelligent controller, under voltage instant ( or time delay type) trip and
shunt trip5. Intelligent controller categories: L type(basic type), M type( Standard type), and H type ( communication type)Normal Working Conditions of intelligent Air Circuit Breaker(ACB)1. The ambient temperature of our intelligent circuit breaker should be within -5°Cto +40°C. The average temperature should not be more than +35°C(except for customized designs)2. The altitude should be below 2000M.3. The relative humidity should not be more than 50% at +40°C, the upper temperature limit. At lower temperatures, higher humidity is allowed e.g 90% at 20°C. Dew that is formed during temperature variation should be eliminated, to increase its
durability.4. Pollution garde: class 35. The following have an installation grade of IV: main circuit, absent voltage release coil, power transformer primary coil. Other auxiliary circuits and controls have a mounting grade of III.6. The circuit breaker should be installed according to the manual. The vertival tilt angle should not exceed 5 degrees.7. if the air circuit breaker is installed in a small compartment of the switch board, the protection grade is up to IP40. If it is then fitted with a door frame, the protection grade is up to IP54.Structure Characteristics of Intelligent Air Circuit Breaker(ACB)1. Our intelligent air circuit breaker can be of a fixed type and draw-out type. The fixed type air circuit breaker is installed within a special drawer to become a draw-out type breaker. Our circuit breaker consists of a contact system, and arc-extinguishing system, operating mechanism, current transformer, intelligent controller and auxiliary switches, secondary plug and socket, under voltage and shunt releases. The draw-out type air circuit
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