This mechanism is specifically designed for operating the ZN85-40.5 series indoor high-voltage vacuum circuit breakers. Its performance complies with GB1984-89 "AC High-Voltage Circuit Breakers" and the "Technical Requirements" of this product. Its main indicators meet or exceed the "IEC" standards. This mechanism is of the indoor type, featuring two energy storage methods: electric energy storage and manual energy storage. The opening operation includes three methods: an opening solenoid (which can be equipped with an overcurrent release) and a manual button operation. The closing operation includes two methods: a closing solenoid and manual operation. The surface of the mechanism is treated with anodic electrophoretic paint, providing extremely high corrosion resistance.