✅ CHINT NB1-63H C40 Miniature Circuit Breaker – 2P, 40A, C Curve, 10kA Breaking Capacity Description (English): The CHINT NB1-63H C40 is a double-pole miniature circuit breaker (MCB) developed for reliable protection of dual-phase circuits in demanding residential, commercial, and industrial applications. With a rated current of 40A and C curve tripping behavior, it is ideal for feeding large loads such as industrial outlets, HVAC systems, and control panels with moderate inrush current. This MCB offers a high short-circuit breaking capacity of 10kA at 230V AC and complies with EN/IEC 60898-1 and EN/IEC 60947-2 standards, ensuring reliable performance and safety during electrical faults. It features a manual toggle switch for circuit control, a VisiTrip fault indicator for quick diagnosis, and a VisiSafe visual disconnection strip. Its compact 36mm width (4 DIN pitch) allows fast mounting on standard DIN rails, saving panel space. With a rated insulation voltage of 500V and impulse withstand voltage of 6kV, the NB1-63H C40 is built for long-term use—supporting 20,000 mechanical and 10,000 electrical operations. Operating temperature range: -35°C to +70°C. Specifications (English): Model: NB1-63H Poles: 2P Rated Current [In]: 40A Curve Type: C Breaking Capacity: 10kA at 230V AC (EN/IEC 60898-1) Insulation Voltage [Ui]: 500V AC Impulse Voltage [Uimp]: 6kV Standards: EN/IEC 60898-1, EN/IEC 60947-2 Mounting: DIN rail, 4 pitch (36mm width) Protection Class: IP20 (IP40 in enclosure) Operating Temperature: -35°C to +70°C Mechanical Life: 20,000 cycles Electrical Life: 10,000 cycles Tightening Torque: 2 Nm Wire Capacity: 1–25mm² (rigid), 1–16mm² (flexible)