✅ CHINT NB1-63 C25 Miniature Circuit Breaker – 3P, 25A, C Curve, 6kA Breaking Capacity Description (English): The CHINT NB1-63 C25 is a triple-pole miniature circuit breaker (MCB) developed for the protection of three-phase electrical systems in residential, commercial, and light industrial environments. With a rated current of 25A and C tripping characteristics, this breaker is ideal for moderately inductive loads such as industrial socket outlets, HVAC units, and small motors. It offers a short-circuit breaking capacity of 6kA at 400V AC per EN/IEC 60898-1, and up to 50kA under EN/IEC 60947-2 standards, delivering reliable protection against overloads and short circuits across all three poles. The unit is equipped with a toggle mechanism, VisiTrip indicator for quick fault identification, and a VisiSafe strip to confirm complete disconnection. Its 54mm width (3 DIN pitches) allows for space-efficient installation in modular distribution panels. Designed for long service life, the NB1-63 C25 provides 20,000 mechanical cycles and 10,000 electrical cycles. It also includes 500V insulation voltage, 6kV impulse withstand voltage, and enclosure protection up to IP40. Specifications (English): Model: NB1-63 Poles: 3P Rated Current [In]: 25A Curve Type: C Breaking Capacity: 6kA 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, 3 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)