... of electricity, overload, short-circuit, pr HPZ1 series terminal electricity meter box HPZ1-C-1 terminal ... electricity meter box, this series has the function of leakage of electricity, overload ... T is ≤+25°C.Operation and maintenanceHPZ1 combination series, after fixed or operated , should be tested ... be find out the reason, then only can switch on and operate ; if it is the reason ...