Why Choose the Chint NB1-63BH4P20 Miniature Circuit Breaker?
The Chint NB1-63BH4P20 is a high-performance four-pole miniature circuit breaker (MCB) designed to provide reliable overload, short circuit and isolation protection for low-voltage electrical installations. As part of the Chint NB1-63H series, it offers an enhanced 10 kA breaking capacity, making it suitable for demanding commercial, industrial and OEM electrical systems.
Featuring a B curve tripping characteristic, this MCB is ideal for circuits with relatively low inrush currents, including lighting, heating, control equipment and resistive loads. Its compact modular construction allows quick installation into distribution boards, switchboards and electrical control panels using standard DIN rail mounting.
With a 20 A rated current, 10 kA breaking capacity and a four-pole configuration, the NB1-63BH4P20 provides dependable protection and simultaneous isolation of all live conductors in three-phase electrical systems.
Key Advantages
- Reliable overload and short circuit protection.
- 20 A rated current for low-voltage electrical circuits.
- B curve tripping characteristic for sensitive circuit protection.
- 10 kA breaking capacity for enhanced fault interruption.
- Four-pole design provides complete circuit isolation.
- Compact DIN rail mounting for straightforward installation.
- Suitable for commercial, industrial and OEM control panel applications.
Key Features
- Chint NB1-63H miniature circuit breaker series.
- 20 A rated current.
- B curve tripping characteristic.
- 4 pole (4P) configuration.
- 10 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 Low-Inrush Circuits
Miniature circuit breakers automatically disconnect electrical circuits during overload or short circuit conditions, helping protect wiring, connected equipment and personnel. The Chint NB1-63BH4P20 combines thermal and magnetic trip mechanisms to provide fast and dependable protection for low-voltage electrical installations.
Its B curve characteristic is designed for applications with relatively low starting currents, making it an excellent choice for lighting installations, heating circuits, control panels and general commercial electrical distribution.
Typical Applications
- Commercial distribution boards.
- Industrial control panels.
- Lighting circuits.
- Heating and resistive load circuits.
- Control and instrumentation systems.
- OEM machinery and automation equipment.
- Three-phase installations requiring four-pole isolation.
