... switchgear conponents,such as voltage indicator,heater,short circuit and earth fault indicator,blocking magnet,Led light,voltage sensor,temperature and ... ,30A,40A,50A,60A+-1Temperature range : -15 to +60Humidity: <=95%Earth lead length : 3.5mConduct optical fiber length 10m(MAX)Power ... control1.100% inspected before packing and shipping2.with QC report Cable Short Circuit and Earth Fault Indicators