High/ Low Pressure Switch, Anti-frost Protector, Solube Chock, overload Protector, Coil Overheat Protector, Automatic Temperature Sensitive Switch, Anti-phase Protector.

• 高低压开关，防冻开关，可熔栓，过载保护装置，线圈过热保护器，温度自动开关，逆相保护器。