✅ CHINT NB1-63H C63 Miniature Circuit Breaker – 3P, 63A, C Curve, 10kA Breaking Capacity Description (English): The CHINT NB1-63H C63 is a three-pole miniature circuit breaker (MCB) purpose-built for high-load protection in three-phase electrical systems. With a rated current of 63A and a C curve tripping characteristic, it is ideally suited for demanding industrial and commercial loads such as large motors, HVAC units, industrial heaters, and panel feeders. Offering a robust short-circuit breaking capacity of 10kA at 400V AC, this MCB ensures dependable operation under heavy fault conditions. It complies with international standards EN/IEC 60898-1 and EN/IEC 60947-2 for use in both residential and industrial environments. Equipped with a toggle-type actuator, VisiTrip indicator for instant fault detection, and a VisiSafe visual disconnection strip, this breaker enhances operational safety and maintenance clarity. The NB1-63H C63 is compact at 54mm width (6-pitch), ensuring fast DIN rail mounting in modular distribution systems. With 500V insulation voltage, 6kV impulse withstand capability, and high endurance (20,000 mechanical and 10,000 electrical cycles), this breaker is reliable even in harsh environments, operating between -35°C and +70°C. Specifications (English): Model: NB1-63H Poles: 3P Rated Current [In]: 63A 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)