✅ CHINT NB1-63 C40 Miniature Circuit Breaker – 2P, 40A, C Curve, 6kA Breaking Capacity Description (English): The CHINT NB1-63 C40 is a high-capacity double-pole miniature circuit breaker (MCB) designed for efficient protection in residential, commercial, and light industrial applications. With 2 protected poles and a rated current of 40A, it is ideal for power circuits supplying HVAC systems, industrial sockets, and high-load equipment. This breaker features a C tripping curve and a breaking capacity of 6kA at 230/400V AC in accordance with EN/IEC 60898-1, and up to 50kA as per EN/IEC 60947-2, ensuring solid protection against overloads and short circuits across both phases. The device includes a toggle actuator for manual operation, a VisiTrip indicator for quick fault identification, and a VisiSafe strip for visible confirmation of full disconnection. Its compact DIN rail-mounted 36mm width makes it suitable for space-constrained panel installations. With mechanical endurance of up to 20,000 cycles and electrical life of 10,000 cycles, the NB1-63 C40 is a reliable, long-life protection device. It also provides 500V insulation voltage, 6kV impulse withstand voltage, and IP20/IP40 protection in enclosures. Specifications (English): Model: NB1-63 Poles: 2P Rated Current [In]: 40A Curve Type: C Breaking Capacity: 6kA at 230/400V 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 (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)