YCM3 se「ies moulded case circuit breaker(he「ein after called circuit breaker)which adopts international advanced design and manufactural technology, small and compact, modularization, high b「eaking capacity, sho「t arcing over distance, environment protecting etc. They are applied for the power distribution network of AC SOHz，「ated working voltage 690V and below, rated current from 12.SA to 1600A, it can be used to distribute electric power and protect powe「 equipment against overload, short ci「cuit, undervoltage etc. The circuit breake「 can change the circuit and start moto「 infrequently.YCM3 series circuit breaker is equiped with intelligent controllers, with the inc「easing selection range of setting current,powe「 supply is more reliable, successive and safe. The YCM3 complies with standard of IEC60947 2,GB14048.2. This product have isolating function.