✅ CHINT NB1-63H C20 Miniature Circuit Breaker – 3P, 20A, C Curve, 10kA Breaking Capacity Description (English): The CHINT NB1-63H C20 is a high-performance three-pole miniature circuit breaker (MCB) engineered to safeguard three-phase circuits in industrial, commercial, and residential environments. With a rated current of 20A and a C tripping curve, it is ideal for loads with moderate inrush currents such as motor-driven equipment, lighting banks, and mixed outlets. It offers a high short-circuit breaking capacity of 10kA at 400V AC, ensuring dependable operation under fault conditions. The MCB complies with the EN/IEC 60898-1 and EN/IEC 60947-2 standards for both residential and industrial use. Key safety features include a toggle-type manual actuator, a VisiTrip fault indicator for quick troubleshooting, and a VisiSafe indicator for visual confirmation of contact separation. Its compact design (54mm width – 6 DIN pitches) makes it ideal for DIN rail installation in standard distribution panels. The NB1-63H C20 supports a rated insulation voltage of 500V, 6kV impulse withstand, and delivers long service life—20,000 mechanical cycles and 10,000 electrical operations—with reliable function across a wide temperature range from -35°C to +70°C. Specifications (English): Model: NB1-63H Poles: 3P Rated Current [In]: 20A Curve Type: C Breaking Capacity: 10kA at 400V 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, 6 pitch (54mm 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)