... certificate:CCC, CE,EU, TUV & ROHS 1.Application GSZ2 range single pole normally open DC contactor apply to starter-stop of ... due to temperature change; Vibration frequency at fixed place: 1-50Hz (1-10Hz frequency, amplitude 25/f; 10~50Hz frequency, amplitude ... freeInstallation way: by screwAdapt work rule: Ongoing work rule (DC-1) 4. Production line Raw materials testing Plastic shell processing Coil ...