Why Choose the Chint NB1-63D1P40 Miniature Circuit Breaker?
The Chint NB1-63D1P40 is a compact and dependable miniature circuit breaker (MCB) designed to protect low voltage electrical circuits against overloads and short circuits. As part of the Chint NB1-63 series, it provides reliable circuit protection for residential, commercial and light industrial installations.
This 1 pole D curve MCB features a 40 A rated current, making it suitable for circuits supplying transformers, motors, discharge lighting, solenoids and other equipment with high inrush currents. The D curve tripping characteristic is specifically designed for highly inductive loads that can generate substantial start-up currents.
With a rated short-circuit breaking capacity of 6 kA and a standard 35 mm DIN rail mounting format, the NB1-63D1P40 is easy to install within consumer units, distribution boards and electrical control panels. Its compact modular construction supports neat installation and dependable long-term performance.
Key Advantages
- Compact 1 pole miniature circuit breaker.
- 40 A rated current for high inrush current circuits.
- D curve trip characteristic for inductive and start-up loads.
- 6 kA short-circuit breaking capacity.
- Reliable overload and short-circuit protection.
- Quick DIN rail installation in distribution boards and control panels.
Key Features
- Chint NB1-63 series MCB.
- 40 A rated current.
- D curve tripping characteristic.
- 1 pole configuration.
- 6 kA breaking capacity.
- 230 V AC rated voltage.
- DIN rail mounting.
- Suitable for overload and short-circuit protection.
Reliable Protection for High Inrush Current Circuits
Miniature circuit breakers such as the Chint NB1-63D1P40 automatically disconnect electrical circuits when overloads or short circuits occur. This helps protect cables, connected equipment and electrical installations from damage caused by excessive current.
The D curve characteristic trips at a higher multiple of rated current than B or C curve devices, making this breaker suitable for transformers, magnetic devices, discharge lighting, motors and other equipment with high starting currents. Its DIN rail format allows simple integration into new or existing electrical panels.
Typical Applications
- Industrial control panels.
- Transformer protection.
- Motor circuits.
- Discharge lighting circuits.
- Magnetic contactor circuits.
- General electrical installations requiring 40 A protection.
