✅ CHINT NB1-63H C63 Miniature Circuit Breaker – 1P, 63A, C Curve, 10kA Breaking Capacity Description (English): The CHINT NB1-63H C63 is a high-capacity miniature circuit breaker (MCB) designed for the protection of high-current circuits in residential, commercial, and industrial electrical systems. With a rated current of 63A and a C curve tripping profile, it is ideal for circuits supplying heavy equipment, industrial outlets, HVAC units, and main sub-distribution circuits. It features a rated short-circuit breaking capacity of 10kA at 230V AC and complies with both EN/IEC 60898-1 and EN/IEC 60947-2 standards, delivering reliable performance in demanding environments. The breaker includes a manual toggle actuator, VisiTrip indicator for quick fault detection, and VisiSafe strip to ensure full contact disconnection. Its compact 18mm width (2-pitch) design supports DIN rail mounting, ensuring fast and secure installation. With an insulation voltage of 500V, impulse withstand voltage of 6kV, and an IP20/IP40 protection rating (when in enclosure), the NB1-63H C63 offers long service life—20,000 mechanical operations and 10,000 electrical operations. It functions reliably in ambient temperatures from -35°C to +70°C. Specifications (English): Model: NB1-63H Poles: 1P 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, 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)