✅ CHINT NB1-63H C63 Miniature Circuit Breaker – 2P, 63A, C Curve, 10kA Breaking Capacity Description (English): The CHINT NB1-63H C63 is a double-pole miniature circuit breaker (MCB) designed for high-current dual-phase circuit protection in residential, commercial, and industrial applications. With a rated current of 63A and a C curve tripping profile, this MCB is ideal for protecting heavy loads such as main feeders, industrial sockets, large HVAC systems, and machinery. It provides a high short-circuit breaking capacity of 10kA at 230V AC and meets international safety standards EN/IEC 60898-1 and EN/IEC 60947-2. It safeguards against both overloads and short circuits while ensuring consistent and safe operation. Equipped with a toggle-type actuator, the MCB also includes a VisiTrip indicator for fast fault identification and a VisiSafe strip to visually confirm physical disconnection. Its compact 36mm width (4-pitch) design allows for easy DIN rail mounting in standard distribution boards. The NB1-63H C63 offers a rated insulation voltage of 500V, an impulse withstand voltage of 6kV, and a reliable operating range of -35°C to +70°C. With mechanical and electrical durability of 20,000 and 10,000 cycles respectively, it ensures long-lasting performance. Specifications (English): Model: NB1-63H Poles: 2P Rated Current [In]: 63A 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)