This moulded case circuit breaker is suitable for circuit AC 50Hz/60Hz, rated voltage up to AC 660V, Rated operating current to 800A. It is for distribute energy of electricity and infrequent making and circuit in normal conditions. The MCCB rated current under 400A. They are provided with the function of the protection against overload and short circuit and under voltage. The MCCB complies with standard of iEC947-2.