Specifications: Current Rating: 3A-125V AC, 1A-250V AC. Initial Contact Resistance: 20 Milliohms or Less. Insulation Resistance: 100 Megohms. Dielectric Strength: 1500V AC 1 Minute. Contact Material; Copper - Silver plated. Terminal Material: Copper - Silver plated. Terminal Type: Solder. Mounting Hole: 0.431". Hardware: Hex Nut, Washer. NOTE: Normally Open = OFF/(ON). Type is SPST. Normally open momentary.