✅ CHINT NB1-63H C50 Miniature Circuit Breaker – 2P, 50A, C Curve, 10kA Breaking Capacity Description (English): The CHINT NB1-63H C50 is a double-pole miniature circuit breaker (MCB) built for robust dual-phase protection in residential, commercial, and industrial systems. With a rated current of 50A and a C curve tripping characteristic, it is ideal for powering heavy-duty loads such as high-current sockets, HVAC systems, and industrial equipment. This device delivers a high short-circuit breaking capacity of 10kA at 230V AC, fully compliant with EN/IEC 60898-1 and EN/IEC 60947-2 standards. It protects circuits from both overloads and short circuits with superior reliability. The NB1-63H C50 includes a toggle actuator, VisiTrip indicator for quick fault detection, and a VisiSafe disconnection strip that provides visual confirmation of open contacts. Its 36mm width (4-pitch) design allows for efficient DIN rail installation in compact distribution boards. It features a rated insulation voltage of 500V and impulse withstand voltage of 6kV. Designed for long-term service, it offers 20,000 mechanical and 10,000 electrical operating cycles, with stable performance from -35°C to +70°C. Specifications (English): Model: NB1-63H Poles: 2P Rated Current [In]: 50A 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, 4 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)