✅ CHINT NB1-63 C40 Miniature Circuit Breaker – 1P, 40A, C Curve, 6kA Breaking Capacity Description (English): This CHINT NB1-63 is a high-performance miniature circuit breaker (MCB) designed to ensure reliable circuit protection in residential, commercial, and light industrial applications. It features 1 protected pole, a rated current of 40A, and a C tripping curve, making it suitable for moderately inductive loads such as HVAC units, industrial sockets, and machine controls. It offers a short-circuit breaking capacity of 6kA at 230V AC conforming to EN/IEC 60898-1, and up to 50kA at 220–240V AC per EN/IEC 60947-2, ensuring dependable protection against overload and fault currents. The device is equipped with a toggle mechanism for manual operation, a VisiTrip indicator for quick fault detection, and a VisiSafe strip for confirming safe disconnection. It meets both residential and industrial compliance standards. With a mechanical life of up to 20,000 cycles and electrical durability of 10,000 cycles, this breaker is built for long-term reliability. It is compact (18mm wide), DIN rail mountable, and optimized for modern distribution panels. Other technical parameters include 500V insulation voltage, 6kV impulse withstand voltage, IP20/IP40 protection (in enclosure), and an operational temperature range from -35°C to +70°C. Specifications (English): Model: NB1-63 Poles: 1P Rated Current [In]: 40A Curve Type: C Breaking Capacity: 6kA 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)