This leakage Circuit Breaker is mainly used in the system with rated frequency of AC 50Hz, 60Hz rated voltage up to 230V and rated current up to 40A to provide leakage, overload, over-voltage, short circuit protection for household and other similar circuit device, and electrical equipment. Technical data: 1. Rated working current: 40A 2. Rated working Voltage: 230V, 240V 3. Rated residual operating current 30mA 4. Breaking capacity: 6kA 5. Instantaneous Trip Rank C type 5 to 10 In instantaneous tripping 6. Electrical lifetime: 4000 times 7. Installs in DIN guide rail 35mm 8. Post wiring ability: wire 1-16mm2 Extremely high breaking capacity With compact structure and small volume With the function of median line to open breaks, it is safer and more reliable With double functions binding clamp and stronger wiring ability