... Specialized in 48*48MM,72*72MM,96*96MM Panel Meter Moving Iron & moving coil Instruments AC Ammeter:Model: ... 30V, 50V, 75V, 100V, 120V, 150V, 250V, 300V, 450V, 600V(For 450-380KV,should be used with potential transformer whose secondary voltage ... 3A, 5A, 7.5A, 10A, 20A, 30A, 50A, 75,100A (used with Shunt)Note: For 60/75/100A direct meters, ... 6000V should be used with Ext. Resistor. (Rated current 5mA).