Miniature Circuit Breaker (MCB) CJM2-63-1 1P

CJM2-63-1 Type Miniature circuit breakers (MCBs) ensure electrical safety in homes and similar situations, such as offices and other buildings as well as for industrial applications by protecting electrical installations against overloads and short circuits. Once a fault is detected, the miniature circuit breaker automatically switches off the electrical circuit to prevent damage to wires and to avoid the risk of fire. Warranting reliability and safety for people and assets, MCBs are equipped with two tripping mechanisms: the delayed thermal tripping mechanism for overload protection and the magnetic tripping mechanism for short circuit protection.

Products Details

Product Description

  • According to IEC60898/EN60898 standards
  • Rated current is 1,2,3,4,6,10,16,20,25,32,40,50,63A
  • Rated voltage is 230/400V
  • Frequency is 50/60Hz
  • High short-short capacity 6KA
  • Designed to protect circuit carrying big current up to 63A
  • Contact position indication
  • Used as main switch in household and similar installation


Standard IEC/EN 60898-1
Pole No 1P,1P+N, 2P, 3P,3P+N,4P
Rated voltage AC 230V/400V
Rated Current(A) 1A,2A,3A,4A,6A,10A,16A,20A,25A,32A,40A,50A,63A
Tripping curve B, C, D
Rated short-circuit capacity(lcn) 6000A
Rated frequency 50/60Hz
Rated impulse withstand voltage Uimp 4kV
Connection terminal Pillar terminal with clamp
Mechanical life 20,000 Cycles
Electrical life 4000 Cycles
Protection degree IP20
Connection capacity Flexible conductor 35mm²
Rigid conductor 50mm²
Installation On symmetrical DIN rail 35mm
Panel mounting

Overload Current Protection Characteristics

Test Tripping Type Test Current Initial State Tripping timeor Non-tripping Time Provisior
a Time-delay 1.13In Cold t≤1h(In≤63A) t≤2h(ln>63A) No Tripping
b Time-delay 1.45In After test a t<1h(In≤63A) t<2h(In>63A) Tripping
c Time-delay 2.55In Cold 10s<t<60s(In≤63A) 20s<t<120s(In>63A) Tripping
d B curve 3In Cold t≤0.1s No Tripping
C curve 5In Cold t≤0.1s No Tripping
D curve 10In Cold t≤0.1s No Tripping
e B curve 5In Cold t≤0.1s Tripping
C curve 10In Cold t≤0.1s Tripping
D curve 20In Cold t≤0.1s Tripping

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