TONGOU takes the high-end low-voltage electrical system solutions experts as the brand positioning, takes solving the pressure and challenges of customers as the responsibility, and creates value for customers. TONGOU provides high quality moulded case circuit breaker(MCCB). It refers to a moulded case switch.
It is mainly used for terminal power distribution and can carry load directly. The maximum rated current shall not exceed 1250A. MCCB shall not exceed 630A in general application. Its function is relatively simple, with thermal-magnetic, electromagnetic tripping, Undervoltage tripping, fault tripping, alarm and other functions, with several groups of auxiliary contacts. There are many models from domestic to imported (including miniature circuit breakers).
The number of poles of MCCB includes single pole, double pole, triple pole, single + neutral pole and triple + neutral pole. The rated current range is 2A-125A. Its upper and lower terminals can be fed in, and the maximum short-circuit breaking capacity is 10kA. MCCB has three types of leakage protection devices. They are electronic or electromagnetic leakage accessories (double-pole, four-pole, and used with small circuit breaker), leakage protection device (double-pole, four poles), leakage circuit breaker (but + neutral pole), respectively to provide protection for leakage fault and overload.