Air Circuit Breaker(ACB)

Item No.: DW45
Indoor Intelligent Universal ACB 400V/690V 400A~6300A Air Circuit Breakers
  • Product Name:Air Circuit Breaker(ACB)
  • Product Model:DW45
  • Rated Voltage:400V/690V
  • Rated Current:400A~6300A
  • Poles Number:3Pole or 4Pole
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    YIKA Indoor Intelligent Universal Air Circuit Breakers 400A 630A 800A 1200A 1600A 2000A 3200A 4000A ACB Air Circuit Breaker

    DW45 series intelligent conventional circuit breaker is applicable for distribution network of AC50Hz with rated voltage up to and including 690V and rated current 400A-6300A, used to distribute electric energy and protect the power equipment against overload, under-voltage, short-circuit or single-phase grounding fault.This circuit breaker has intelligent protection function and accurate selective protection, it improves reliability of power supply and avoids unnecessary power failure. Meanwhile, it has open type communication interface,it is able to carry out four remote controls, satisfying requirements of control center and automptic system.Pulse withstand voltage of this circuit breaker at altitude 2000m is 8000V (it can be corrected for different altitudes according to the standard, but not over 12000V at most).This circuit breaker also can be used as disconnector when it is prepared without intelligent release or sensor.
    This circuit breaker is in accordance with GB14048.2Low-voltage switchgear and controlgear-Low-voltage circuit breakers and IEC947-2 Low-voltage switchgear and controlgear-Circuit breakers.


    Main Technical date
    Circuit breakers rated current in Table 1 Tabel 1
    Inm A In A
    2000 (400)630,800,1000,1250,1600,2000
    3200 2000,2500,2900,3200
    4000 3200,3600,4000
    6300 4000,5000,6300
    Circuit breakers rated breaking capacity cut short and short-term tolerance of the current see
    table 2, circuit breakers arcing distance of a "zero (that is, outside the non-arcing circuit breaker)" Tabel 2
    Inm A 2000 3200 4000 6300
    Rated limit short-circuit breaking capacity
    400V 80 100 100 120
    690V 50 65 75 85
    Rated short-circuit making capacity
    400V 176/0.2 220/0.2 220/0.2 264/0.2
    690V 105/0.25 143/0.2 165/0.2 187/0.2
    Rated service short-circuit breaking capacity
    400V 50 65 80 100
    690V 40 65 65 75
    Rated short-time withstand current
    Icw(kA)1S, time delay   0.4S, O-CO
    400V 50 65 65/80(MCR) 85/100(MCR)
    690V 40 50 50/65(MCR) 65/75(MCR)
    Note: breaking capacity indexes of upper and low incoming lines are the same.
    Max dissipation power of circuit breaker is 360W. 
    Rated continuous current change of circuit breaker under different ambient temperatures as shown in table 3.

    400A 630A 800A 1000A 1250A 1600A 2000A
    40 400A 630A 800A 1000A 1250A 1600A 2000A
    50 400A 630A 800A 1000A 1250A 1600A 1900A
    60 400A 630A 800A 1000A 1250A 1600A 1800A
    Note: derating factor for 2500A above is 0.9, and the capacity does not fall at 4000A within 6300A.

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