Short description:

M4 series moulded case circuit breaker, it's applicable circuit of AC 50/60Hz,rated insulation voltage 690 V(M4-125 500V),rated operating voltage AC 690V or below ,rated operating current 12.5-1600A, for distribute energy of electric and infrequent making and breaking circuit in normal condition. Circuitbrea kers provided functioni praesidii in cultro et brevi circuitu et undervoltage. The circuit breakers comply with standard of IEC60947-2.The circuit-breakers are double insulating (In m=250A or above), the control circuit of the accessories is set apart with the main circuit, and doesn't need to open the cover of the circuit breaker when install the accessories.