Circuit Breaker

Molded Case Circuit Breaker





  • DORMAN Series Moulded Case Circuit Breaker is available in two frame sizes from 25 to 800amps, loadline series of moulded case circuit breakers provide overload and short-circuit pro-tection for the full range of transformer sizes encountered in normal service. The overload andinstantaneous tripping elements, adjustable over all wide band, make these MCCBs ideal formany distribution application.

Technical Data

Type DM-100 DM-160 DM-250 DM-400 DM-630 DM-800
Poles number 1,3 3 3 3 3 3
Rated current In(A) 25,32,40,50,60,80,100 125,160 160,200250 300,400 500,630 700,800
Rated insulation voltage Ui(V) AC500 AC660 AC660 AC660 AC660 AC660
Utilisation category A A A A A A
Rated ultimate short-circuit breaking capacity Icu(KA) at 415V 25 65 65 65 65 65
Rated short-circuit service breakingcapacity Ics(%Icu) at 415V 75% 75% 75% 75% 75% 75%
    Tripping Elements
    Overload front adjustable 0.7-1.0 times rated current
    Instantaneous: non-adjustable AA 25~63=400A
    AA 80~250=10In
    Switch Disconnector
    Current rating In(A): 250 3pold




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