✅ CHINT NB1-63 C50 Miniature Circuit Breaker – 1P, 50A, C Curve, 6kA Breaking Capacity Description (English): This CHINT NB1-63 is a high-capacity miniature circuit breaker (MCB) tailored for reliable performance in residential, commercial, and light industrial distribution systems. It features 1 protected pole, a rated current of 50A, and a C tripping curve, making it ideal for circuits supplying high-demand equipment, HVAC systems, and large power outlets. The breaker is rated at 6kA breaking capacity at 230V AC as per EN/IEC 60898-1, and up to 50kA at 220–240V AC in compliance with EN/IEC 60947-2, ensuring strong protection against short circuits and overloads. It includes a manual toggle switch, fault indication via VisiTrip, and clear disconnection indication via VisiSafe. The device conforms to both residential and industrial standards, providing enhanced safety and quick maintenance diagnostics. Built for endurance, the NB1-63 C50 supports 20,000 mechanical operations and 10,000 electrical operations. Its compact 18mm width and DIN rail mounting design offer quick and flexible installation in distribution boards. Additional specifications include 500V insulation voltage, 6kV impulse withstand voltage, IP20/IP40 protection (in enclosure), and a broad operating temperature range from -35°C to +70°C. Specifications (English): Model: NB1-63 Poles: 1P Rated Current [In]: 50A 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)