Why Choose the Chint NB1-63D4P63 Miniature Circuit Breaker?
The Chint NB1-63D4P63 is a high-performance four-pole miniature circuit breaker (MCB) designed to provide dependable overload, short circuit and isolation protection for low-voltage electrical installations. As part of the proven Chint NB1-63 series, it offers reliable protection for commercial, industrial and OEM applications.
Featuring a D curve tripping characteristic, this MCB is specifically engineered for circuits supplying equipment with high inrush currents, including motors, transformers, compressors, discharge lighting and other inductive loads. Its compact DIN rail mounted design enables straightforward installation within electrical distribution boards and industrial control panels.
With a 63 A rated current, 6 kA breaking capacity and a four-pole configuration, the NB1-63D4P63 delivers reliable protection while providing simultaneous isolation of all live conductors in three-phase electrical systems.
Key Advantages
- Reliable overload and short circuit protection.
- 63 A rated current for higher capacity electrical circuits.
- D curve tripping characteristic for high inrush current applications.
- 6 kA breaking capacity for dependable fault interruption.
- Four-pole design provides complete circuit isolation.
- Compact DIN rail mounting for quick installation.
- Suitable for commercial, industrial and OEM control systems.
Key Features
- Chint NB1-63 miniature circuit breaker series.
- 63 A rated current.
- D curve tripping characteristic.
- 4 pole (4P) configuration.
- 6 kA rated breaking capacity.
- Provides overload, short circuit and isolation protection.
- Suitable for AC 50/60 Hz electrical systems.
- Compact modular DIN rail mounted construction.
Reliable Protection for High Inrush Current Circuits
Miniature circuit breakers automatically disconnect electrical circuits when overload or short circuit faults occur, helping to protect wiring, connected equipment and personnel. The NB1-63D4P63 combines thermal and magnetic tripping mechanisms to deliver fast and dependable protection in demanding low-voltage electrical installations.
Its D curve characteristic is intended for circuits with high starting currents, making it ideal for motors, transformers, compressors and other inductive equipment while reducing nuisance tripping during normal operation.
Typical Applications
- Industrial distribution boards.
- Motor control and transformer circuits.
- Three-phase electrical installations.
- Commercial switchboards.
- OEM machinery and automation equipment.
- Industrial control panels.
