HSM1Z series plastic shell circuit breaker is suitable for low-voltage grids of AC 50Hz, rated insulation voltage 800V, rated working voltage 690V and below and rated current 40 ~ 1250A for distributing electric energy and infrequent closing and disconnecting under normal use conditions, and for protection the lines and equipment from overload, short circuit, grounding faults, and under-voltage.
The circuit breaker with the rated shell rating voltage at 400A and below can also be used for infrequent starting and in-operation breaking of squirrel cage motors and for protecting the motor from overload, short circuit, and under-voltage.
The breaker by intelligent controller type is divided into two types, i.e., M and H. Apart from overload long delay, short circuit short delay, and short-circuit instantaneous protection and grounding fault protection, the protected current and operating time can be set as well. H-type circuit breaker is also added with communicable function and computer networking to realize remote control, remote adjustment, remote measurement, and remote signaling.
1. Rated impact withstand voltage: 8000V;
2. Protection grade: IP30;
3. Protection grade: 3;
4. Installation type: III;
5. Number of poles: 3/4 optional.