Specifications: Current Rating: 3A-250V AC. Initial Contact Resistance: 25V DC @ 1A, 20 Milliohms. Insulation Resistance: 1000 Megohms. Dielectric Strength: 500V DC. Contact Material: Silver. Terminal Material: Silver plated Copper Alloy. Electrical Life: 20,000 cycles. Terminal Type: Solder. Mounting Hole: 0.500". Hardware: Nut, Washer