✅ CHINT NB1-63 C50 Miniature Circuit Breaker – 2P, 50A, C Curve, 6kA Breaking Capacity Description (English): The CHINT NB1-63 C50 is a high-performance double-pole miniature circuit breaker (MCB) designed to safeguard dual-phase circuits in residential, commercial, and light industrial environments. With 2 protected poles and a rated current of 50A, this breaker is ideal for heavy-duty loads including compressors, industrial outlets, and large HVAC systems. It features a C tripping curve and a rated breaking capacity of 6kA at 230/400V AC per EN/IEC 60898-1, and up to 50kA as per EN/IEC 60947-2, offering reliable protection from overloads and short circuits across both poles. Equipped with a manual toggle actuator, the breaker includes a VisiTrip indicator for immediate fault detection and a VisiSafe strip for visual confirmation of isolation. The compact 36mm-wide, DIN rail-mountable design allows for quick integration into standard panelboards. Designed for endurance, the device provides up to 20,000 mechanical operations and 10,000 electrical operations. Additional features include 500V insulation voltage, 6kV impulse withstand voltage, and IP20/IP40 protection (when installed in enclosure). Specifications (English): Model: NB1-63 Poles: 2P Rated Current [In]: 50A 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)