The mccb switch is equipped with the self - protection device Mccb开关带自动保护装置
2.
Improvement of the hand brake of locomotive with automatic protective set 机车手制动机加装自动保护装置
3.
Built - in heat - triggered protector prevents motor damage and extends pump life 内设过热自动保护装置防止电机损坏，延长泵的寿命。
4.
Static transfer switch are used to provide a fail - safe fail over in the event of a major power failure or in maintenance mode 静态转换开关是应用于当主电源掉电或者设备维护的时候充当一个自动保护装置。
