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low voltage circuit breaker
moulded case circuit breaker
The ZM2 series moulded case circuit breaker ( as circuit breaker) is the new product which developed by our company, The design manifested the limited current principle and manufacture technology, have the characteristic of compact structure, entire module, high break, zero arc. Its rated insulation voltage is 750V, is suitable in exchanges 50Hz, rated working voltage 690V or below, When the rated working current from 16A to 630A, which makes the infrequent transfer and the motor infrequent start function. The circuit breaker has the protective device of the overload, short circuit and over voltage, can protect the line and the power equipment from damage.
The circuit breaker short-circuit the minute breaks the ability (Icu) the height according to rated limit, divided into N (standard type) , H (middle high breaking capacity type) , L (limit current type) .
This circuit breakers are suitable for vertical or horizontal installation, can't inverse the coil when connected . 1, 3, 5 connect to power line, 2, 4, 6 connect to overload line.
This circuit breaker carries out standard as follows:
IEC60947 - 1 and GB/T14048.1 general rule
IEC60947 - 2 and GB/T14048.2 low-voltage circuit-breaker
IEC60947-4 and GB/T14048.4 contact device and electric motor starter
IEC60947-5.1 and GB/T14048.5 mechanical and electrical control circuit electric appliance