Standard rating: 50A @ 125VAC / 250VAC. Temperature range: 40 - 140 Operating tolerance: 5. Dielectric strength: 1500 vac / 1 minute. Resistance to tracking: 175vac Type of connectors: screw terminal. Contacts endurance: B-2003M: 300 cycles. B-2003A: 1, 000 cycles. Approval: TUV, BSMI.