✅ CHINT NB1-63H C4 Miniature Circuit Breaker – 1P, 4A, C Curve, 10kA Breaking Capacity Description (English): This CHINT NB1-63H is a high-breaking capacity miniature circuit breaker (MCB) engineered for enhanced circuit protection in residential, commercial, and control system applications. It is a 1P device with one protected pole, rated at 4A, and features a C tripping curve, making it suitable for circuits with moderate inrush currents such as lighting, control panels, and signal lines. It offers a short-circuit breaking capacity of 10kA at 230V AC per EN/IEC 60898-1, ensuring strong protection from both overloads and short circuits. The breaker includes a toggle control switch, a VisiTrip fault indicator for quick diagnosis, and a VisiSafe strip to confirm full physical disconnection. Designed with a compact 18mm width (2-pitch), the NB1-63H C4 is compatible with standard DIN rail mounting. Built for durability, it delivers 20,000 mechanical cycles and 10,000 electrical cycles, and it supports insulation voltage up to 500V and impulse withstand voltage of 6kV. Its protection rating reaches IP20/IP40 (when enclosed), and it functions reliably in environments ranging from -35°C to +70°C. Specifications (English): Model: NB1-63H Poles: 1P Rated Current [In]: 4A 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)