✅ CHINT NB1-63H C25 Miniature Circuit Breaker – 3P, 25A, C Curve, 10kA Breaking Capacity Description (English): The CHINT NB1-63H C25 is a three-pole miniature circuit breaker (MCB) tailored for three-phase load protection in residential, commercial, and light industrial applications. With a rated current of 25A and a C curve tripping characteristic, it’s ideal for motor loads, lighting systems, and mixed-use power distribution where moderate inrush currents are expected. With a breaking capacity of 10kA at 400V AC, the NB1-63H C25 ensures reliable protection against both overloads and short circuits. The unit conforms to EN/IEC 60898-1 and EN/IEC 60947-2, making it suitable for installation in both residential and industrial settings. Key features include a toggle control lever, VisiTrip indicator for fault identification, and VisiSafe contact separation visibility. The device is compact at 54mm width (6 DIN pitches), and is DIN rail mountable for easy integration into modular switchboards. Rated for 500V insulation voltage and 6kV impulse withstand, the unit offers extended durability with 20,000 mechanical and 10,000 electrical cycles. Operating temperature range: -35°C to +70°C. Specifications (English): Model: NB1-63H Poles: 3P Rated Current [In]: 25A Curve Type: C Breaking Capacity: 10kA at 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, 6 pitch (54mm 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)