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CTM3L Series 3 Pole Moulded Case Leakage Circuit Breaker

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  • CTM3L Series 3 Pole Moulded Case Leakage Circuit Breaker
  • CTM3L Series 3 Pole Moulded Case Leakage Circuit Breaker
Zhejiang Chengtong Electric Power Technology Co.,Ltd.

CTM3L Series 3 Pole Moulded Case Leakage Circuit Breaker

Model: CTM3L-250

1. Double open pitch design, strong current limiting capacity, high breaking capacity;
2. The rated residual operated current and operated time are adjustable.

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Model CTM1EL-250 CTM1EL-400/630
Frame grade rated current Inm(A) 250  400/630
Rated current(adjustable)In(A) (0.4~1.0)ln
Rated insulation voltage Ui(V) AC1000
Rated impulse withstand voltage Uimp(kV) 12 
Rated residual operated current I△n(mA) 30~1000 Step adjustable
2I△n limit non driving time(s) 0.06/0.1/0.2 Selectable setting
Pole 3P+N
Rated working voltage Ue(V) AC400 AC690   AC400 AC690
Rated limit short-circuit breaking capacity class L M H / M H /
Rated limit short-circuit breaking capacity Icu(kA) 25  50  85  20  65  85  30 
Rated running shor-circuit breaking capacity lcs(kA) 15  35  65  10  50  65  20 
Rated short time withstand current Icw(kA)/1s 3    10 
Rated residual short-circuit making and breaking capacity I△m(kA) 25%lcu
Rated frequency 50Hz

Model Contour size Installation size External copper busbar size Mounting screw
L   W H    A B D C
  CTM1EL-250 165  142  110   126  70  35  20  Ф4×45
  CTM1EL-400 257  198  146   194  94  48  30  Ф6×65
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