Why Choose the Chint NBH8-40-B20 Miniature Circuit Breaker?
The Chint NBH8-40-B20 is a compact and dependable 1P+N miniature circuit breaker designed to provide reliable overload and short-circuit protection in low-voltage electrical installations. As part of the trusted Chint NBH8 series, it is suitable for residential, commercial and light industrial applications where dependable circuit protection and safe isolation are essential.
Its slim modular construction makes it ideal for installation within consumer units, distribution boards and electrical control panels where space is limited. The integrated contact position indicator provides clear operating status, while the fast clip DIN rail mounting system allows quick installation and easy maintenance. The NBH8 series complies with IEC/EN 60898-1 and is designed for long mechanical and electrical service life.
With a rated current of 20 A, a B curve tripping characteristic and a 1P+N configuration, the NBH8-40-B20 is ideal for protecting socket outlet circuits, lighting installations, auxiliary supplies and general-purpose single-phase electrical systems.
Key Advantages
- Compact 20 A miniature circuit breaker for dependable circuit protection.
- 1P+N configuration with protected live and switched neutral.
- B curve tripping characteristic suitable for resistive loads and low inrush current circuits.
- Provides reliable overload and short-circuit protection.
- Suitable for switching and electrical isolation.
- Quick installation using standard 35 mm DIN rail mounting.
Key Features
- Chint NBH8 miniature circuit breaker series.
- 20 A rated current.
- B curve tripping characteristic.
- 1P+N pole configuration.
- Designed for overload and short-circuit protection.
- Contact position indicator for clear operating status.
- Compact modular housing for distribution boards.
- 35 mm DIN rail mounting with fast clip device.
Reliable Protection for General Electrical Circuits
The Chint NBH8-40-B20 automatically disconnects the electrical supply during overload or short-circuit conditions, helping to protect wiring, electrical equipment and connected devices from damage. Its B curve characteristic trips between 3 and 5 times the rated current, making it suitable for resistive loads and circuits with low inrush current.
The 1P+N configuration protects the live conductor while switching the neutral conductor, providing safe isolation for single-phase electrical systems used throughout residential and commercial installations.
Typical Applications
- Consumer units and distribution boards.
- Residential electrical installations.
- Commercial lighting circuits.
- Socket outlet circuits.
- Control panels and auxiliary supplies.
- General-purpose single-phase electrical systems.
