LM2 (NS) series MCCB is the company adopts the international advanced technology, developed by one of the new circuit breaker, rated insulation voltage is 750V, AC 50Hz or applied (60Hz), rated working voltage 690V and below, rated Current 12.5A to 630A of current is used to allocate power in the normal condition to make a non-closed and disconnected frequently used, and the circuit and equipment overload, the time when under-voltage protection. Shell frame size rated current of 400A and below the circuit breaker, but also can be used for squirrel-cage motors non-frequent start, disconnect operation as well as in motor overload, short circuit and under-voltage protective effect. Products comply with GB14048.2, IEC60947-2 standard.