Electrical:Contact Ratings: Fine silver contacts rated at 3A, 300W maximum AC non-inductive load standard.Leakage Resistance: 1,000 MW or greaterDielectric Strength: 250 VDCMaterials:Frame: Steel, platedBushing and Shaft: Copper alloy, platedSprings: Copper alloyKnob: Molded thermoplasticInsulation: Rigid plastic spacers with plastic tubing through stack. Rigid plastic and/or thermoplastic lifters. Thermoplastic cam on actuator end