... The circuit breaker can used with various kinds of accessories (OF,SD,MX+OF,MN etc.)The circuit breaker can assembled to ... 10kA,2P(250V:10kA,3P,4P(440V):6kAInstantaneous tripping typeB curve(4~7In),C curve(7~15In) ... tripping);Rated withstanding voltage Uimp4kVMechinal life10000 timesEnviormentAmbient temperature:-5°C~+40°CApplicable auxiliary partsOF auxiliary contact,SD alarming contact,MX+OF shunt ...