Why Choose the Chint NB1-63BH4P63 Miniature Circuit Breaker?
The Chint NB1-63BH4P63 is a high performance 4 pole miniature circuit breaker (MCB) designed to provide dependable overload and short circuit protection in commercial, industrial and electrical distribution applications. As part of the proven Chint NB1-63H Series, this model offers a 10 kA breaking capacity, making it suitable for installations where higher fault levels are present.
Featuring a 63 A rated current and a B curve trip characteristic, the NB1-63BH4P63 is ideal for protecting circuits supplying resistive loads such as lighting, heating and long cable runs. Its compact DIN rail mounted design enables quick installation within distribution boards, control panels and switchgear assemblies.
Manufactured to recognised international standards, the NB1-63BH4P63 combines reliable protection, long service life and consistent performance, making it an excellent choice for electrical contractors, panel builders and industrial maintenance engineers.
Key Advantages
- High performance 4 pole miniature circuit breaker.
- 63 A current rating for demanding electrical installations.
- 10 kA breaking capacity suitable for higher fault level applications.
- B curve tripping characteristic for resistive loads and lighting circuits.
- Reliable protection against overloads and short circuits.
- Compact DIN rail mounting for simple installation.
- Suitable for commercial, industrial and OEM electrical panels.
Key Features
- Manufacturer: Chint
- Series: NB1-63H
- Model: NB1-63BH4P63
- 4 pole configuration.
- 63 A rated current.
- B curve trip characteristic (3 to 5 × In).
- 10 kA rated breaking capacity.
- Suitable for AC 50/60 Hz systems.
- DIN rail mounted design.
- Compatible with selected NB1 series accessories.
Reliable Circuit Protection for Modern Installations
The Chint NB1-63BH4P63 protects electrical circuits by automatically disconnecting the supply whenever overload or short circuit conditions occur. This helps prevent damage to wiring, connected equipment and electrical installations while improving overall system safety.
Its B curve characteristic is particularly suited to circuits supplying lighting, heating and other resistive loads where fast, reliable protection is required. The 4 pole configuration provides simultaneous isolation of all live conductors, making it suitable for three phase systems requiring neutral switching.
Typical Applications
- Commercial electrical distribution boards.
- Industrial control panels.
- OEM machinery.
- Lighting distribution circuits.
- Building services installations.
- Electrical switchboards.
- Power distribution systems.
