Miniature Circuit Breaker NB1‑63 3 Pole C25 6kA DIN Rail Mounted 3 Phase MCB Reliable Protection

Miniature circuit breaker NB163 3P C25 6kA(R) Key benefits and why you need it Reliable threepole protection for threephase circuits, combining overload and shortcircuit interruption in one compact device. C curve 25 A rating provides stable protection for generalpurpose circuits with moderate inrush currents, such as motors and lighting. 6 kA rated breaking capacity allows safe interruption of fault currents up to 6000 A, reducing risk of equipment damage and downtime. Compact design suitable for distribution boards and panel installations where space and reliable protection matter. Main features and specifications Model: NB163 3P C25 6kA(R) Poles: 3P (three pole) Trip characteristic: C curve Rated current: 25 A per pole Rated breaking capacity: 6 kA (6000 A) Function: automatic thermalmagnetic tripping for overload and shortcircuit protection Performance and compatibility Designed for threephase electrical distribution and control circuits where coordinated protection is required. C curve response is suitable for general loads with short, moderate inrush currents; works well with motors, lighting circuits, and distribution feeders. Compact form factor fits common electrical panels and DIN rail mounting environments used in residential, commercial, and light industrial installations. Practical applications Protection of a small threephase motor and its feeder in a workshop or light industrial setting. Main or feeder protection in a commercial distribution board supplying lighting and general power circuits. Protection of a threephase HVAC or pump circuit where reliable tripping for overload and short circuit is required. Installation and maintenance notes Install in accordance with local electrical codes and wiring practices. Ensure correct coordination with upstream and downstream protective devices for selective tripping. Periodic inspection and functional testing are recommended to confirm correct operation over the equipment life. This NB163 3P C25 6kA(R) miniature circuit breaker offers straightforward, effective threephase protection for a wide range of electrical distribution needs.