DZ20 series plastic shell circuit breakerDetailed product description：

The DZ20 series plastic shell circuit breaker (hereinafter referred to as the circuit breaker) has a rated insulation voltage of 660V, an AC 50Hz rated working voltage of 380 (400) V or below, and a rated current ranging from 16A to 1250A. It is generally used for power distribution, and the Y, J, and G type circuit breakers with a rated current of 225A and the Y type 400A circuit breaker can also be used to protect electric motors. Under normal circumstances, circuit breakers can be used for infrequent line switching and infrequent motor starting.

Four pole circuit breakers are mainly used in three-phase four wire systems with AC 50Hz, rated voltage of 400V and below, and rated current of 100 to 630A. They can ensure complete disconnection of users and power sources, ensuring safety and solving the problem of non-zero neutral current that cannot be overcome by any other circuit breaker.

Circuit breakers for power distribution are used to distribute electrical energy in distribution networks and can serve as overload, short circuit, and undervoltage protection for lines and power equipment.

Circuit breakers for protecting electric motors are used in power distribution networks to disconnect squirrel cage motors during start-up and operation, as well as to provide overload, short circuit, and undervoltage protection for motors.