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Miniature Circuit Breaker

Meba mcb breaker MB45DC

Meba mcb breaker MB45DC series miniature circuit breaker applies to industrial, commercial, lighting and electric machine distribution system with AC415V, 50/60Hz, rated working current up to 100A to protect against overload and short circuit. The item is installed into plug-in type mounting base. It’s conformity with GB10963, IEC60898 standards.

Meba mcb breaker MB45DC

Technical parameters

Frame rated current Imm (A) Pole Width/Pole (18mm times) Rated Voltage (V) Rated Current In(A) Rated limit short circuit capacity Instantaneous breaking type
Breaking current Icu(A) Time T(ms)
63 1 1 DC125 1, 2, 3, 4, 5, 6, 10, 15, 16, 20, 25, 32, 40, 50, 63A 10000 10 C, D
2 2 DC250
3 3 DC440 6000 10 C, D

Time-current operation

Tes Type Test Current First Condition Time limit release or un-release Expect result Note
a C,D 1.13ln Cold t≥1h(ln≤63) Un-Release
b C,D 1.45ln Containue A Type Test t<1h(ln≤63) Release Current in within 5 steadily up
c C 8ln Cold t≥0.1s Un-Release Closed auxiliary switch processing power
12ln t<0.1s Release
d D 10ln Cold t≥0.1s Un-Release
14ln t<0.1s Release

Time-current charateristic curve