MM3 Molded Case Circuit Breaker

MM3 series moulded case circuit breaker (hereinafter called MM3 MCCB) is a new designed MM3 MCCB developed and manufactured adopting advanced international technology. It has the advantages of compacting structure, small volume, and international high breaking capacity. The inner device is moulding installed, adopt the terminal protective cover to keep safe and the different colors of the basic board and covering board to increase the beauty. MM3 MCCB is applicable circuit of AC 50Hz/60Hz, rated insulation voltage 660V, rated operating voltage up to 250V (DC). The rated operating current is 12.5A1250A, for distribute energy of electricity and infrequent making and breaking circuit, and infrequent starting of squirrel cage motor (rated operating current up to 400A) at normal condition with the function of the protection against overload and short circuit and under voltage. MM3 MCCB complies with standard of IEC 947-2, GB 14048.4 and so on. Notice:STR for intelligent type No code for distribution preration; 2 for Motor protection; No code for handle operation; P for Motor operation Z for external turning handle operation; In accordance with the ultimate short circuit breaking capacity classified into four tpes: Type S(basic), Type M(higher),Type H(highest). Working condition The altitude not exceeding 2000m. The ambient temperature is from + 40 to -5 Ambient environment is free from explosive danger and air or dust, which may cause corrosion of metal or weakness of insulation. Ambient environment is free from erosion of rain or snow. Pollution degree 3. Over-voltage category