Description

Miniature circuit breaker is composed of plastic housing,operating mechanis,contact arc extinguishing system,tripping mechanism,ect

The shell is made of high strength special plastic with strongresitance and light weight.the parts of the operating mechanism of the circuit breakerare made of high-strength plastic products,which ensure sensitivity and reliability while obtaining the lowest rotational intertia and amount so that the time from the start of short-circuit fault to the action of the tripping mechanism is very short.the tripping mechanism consists bimetal overloaded inverse time tripping mechanism and short circuit instantaneous electromagnetic mechanism.

The contact are extingguishing system adopts special pilot are arcangle and are extingguishing chamber,which has remarkable current limiting characteristics