... switchgear conponents,such as voltage indicator,heater,short circuit and earth fault indicator,blocking magnet,Led light,voltage sensor,temperature and ... and then cut off the fault section circuit quickly based on its signaling information. And then resume no fault section ... ,40A,50A,60A+-1Temperature range : -15 to +60Humidity: <=95%Earth lead length : 3.5mConduct optical fiber length 10m(MAX)Power ...