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MATERIAL Pinch:9.5mm Poles:2P Screw:M3.5,Steel,Tin plated Terminal:Brass or steel Tin pleted Housing:PBT.UL94V - 0 PERFORMANCE Rated voltage: 450V Rated current: 32A Withstand voltage: AC2000V/1Min Using line diameter: 22-12AWG Temperature range: -30 DEG C - +120 DEG C Maximum locking torque: 10KG.CMClosed back design completely insulates power from the mounting surface Each screw pair is one isolated circuit Jumpers allow creation of common circuits.A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current, typically resulting from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation. Circuit breakers are made in varying sizes, from small devices that protect low-current circuits or individual household appliance, up to large switchgear designed to protect high voltage circuits feeding an entire city.