General Specification :- Current Rating: 30 AMPS & 100 AMPS. Voltage Rating: 500 V WITH END PLATE Temperature Range: -30oC to 75 oC Dielectric Strength: 22500 Vrms between the conductors. Insulation Resistance: 20MW (Min) at 500 VDC Material Specification :- Insulator: Phenolic Black / Anti - Tracking Melomine Connector: Brass with .0001" thick Nickel over it. Screw: Combination Head, over .0001" thick Zinc over Steel / Nickel Over Brass