Both of these are trademarks of our company. General: 1. Mini Circuit Breaker is for non-profeional operation by those untrained, and no maintenance is required2. Satisfying conditions and applications as mentioned above,MCB with ON-OFF indicating device is considered suitable for isolation function.3. Particular devices such as surge protective devices,surge arrester etc are recommended to install at upstream line to MCB as precaution against potential surge voltage and current occurring at its power input side.4. Appropriate tripping curve being chosen and properly installed, MCB trips and switches off its protected circuit in case of fault, and thus provides protection against electric shock. The defaultC curve. If you need B or D curve, please contact the seller or leave a meage in the order, thanks. Technical Data Model Name TOMC3-63 Pole No: 1/2/3/4 Rated voltage: AC 110V/220V/400V Rated current(A): 6/10/16/20/25/32/40/50/63 Tripping curve: B/C/D Rated short-circuit capacity(lcn): 4.5KA Rated frequency: 50/60Hz Energy limiting cla: 3 Rated impulse withstand voltage: 6.2kV Electro-mechanical endurance: 10000 Contact position indication Connection terminal: Screw terminal / Pillar terminal with calmp Connection capacity: Rigid conductor up to 25mm2; Fastening torque: 2.0Nm Installation: On symmetrical DIN rail 35mm / Panel mounting Dear TONGOU Buyer: "Thank you for your attention to and for placing an order in our store." 1.If the amount of your order is greater than