1,poles 1p,2p,3p,4p 2,the competitive price 3,can protect the unit without cutting off the power.
Detailed information:
HYC1-BSurge Protective DeviceType:HYC1-BRated Frequency:AC50/60HzStandard:IEC61643-1Main material: High-grade plastic
HYC1-B series surge protective devices are used for lightning and overvoltageprotection in AC50/60Hz, 230/400V. The product is with an internal nonserviceableseparating device. When the surge protective devices is overcurrent or overvoltage andthe puncture is nonserviceable, the nonserviceable separating device will automaticallyseparate from the protector from the electrical network. And simultaneously the positiondisplay window will turn red from green.
single phase surge protective device
