✅ CHINT NB1-63H C50 Miniature Circuit Breaker – 1P, 50A, C Curve, 10kA Breaking Capacity Description (English): The CHINT NB1-63H C50 miniature circuit breaker (MCB) is built for robust protection of high-capacity circuits in residential, commercial, and industrial settings. With a rated current of 50A and a C curve tripping characteristic, it is ideal for circuits supplying heavy-duty equipment, HVAC units, or large machinery with moderate inrush current. This breaker offers a high short-circuit breaking capacity of 10kA at 230V AC, conforming to EN/IEC 60898-1 and EN/IEC 60947-2 standards, ensuring safe disconnection in fault conditions. Equipped with a manual toggle actuator, a VisiTrip indicator for fast fault identification, and a VisiSafe strip that ensures clear visual confirmation of contact separation, the NB1-63H C50 delivers both safety and reliability. The 18mm compact design allows easy DIN rail installation (2 pitch). It supports 500V insulation voltage, 6kV impulse withstand voltage, and provides IP20/IP40 protection when installed in an enclosure. Its mechanical life reaches 20,000 cycles, and the electrical life is rated for 10,000 operations. The breaker operates reliably in ambient temperatures from -35°C to +70°C. Specifications (English): Model: NB1-63H Poles: 1P Rated Current [In]: 50A 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, 2 pitch (18mm 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)