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Chint NB1-63D4P32 MCB – 4P – D Curve – 32A – 6kA
Chint NB1-63D4P32 32A four pole D curve miniature circuit breaker with 6kA breaking capacity for overload, short circuit and isolation protection in commercial and industrial electrical installations.
£24.79
Why Choose the Chint NB1-63D4P32 Miniature Circuit Breaker?
The Chint NB1-63D4P32 is a reliable four-pole miniature circuit breaker (MCB) designed to provide overload, short circuit and isolation protection for low-voltage electrical installations. As part of the trusted Chint NB1-63 series, it delivers dependable circuit protection for commercial, industrial and OEM electrical systems.
Featuring a D curve tripping characteristic, this MCB is particularly suited to circuits with high inrush currents, including motors, transformers, compressors and other inductive loads. Its compact modular design allows fast installation into distribution boards, switchboards and control panels using standard DIN rail mounting.
With a 32 A rated current, 6 kA breaking capacity and a four-pole configuration, the NB1-63D4P32 provides robust protection and simultaneous isolation of all live conductors in three-phase electrical systems.
Key Advantages
- Reliable overload and short circuit protection.
- 32 A rated current for commercial and industrial circuits.
- D curve tripping characteristic for high inrush current applications.
- 6 kA breaking capacity for dependable fault interruption.
- Four-pole design for complete circuit isolation.
- Compact DIN rail mounting for quick panel installation.
- Suitable for distribution boards, machinery and OEM control systems.
Key Features
- Chint NB1-63 miniature circuit breaker series.
- 32 A rated current.
- D curve magnetic tripping characteristic.
- 4 pole (4P) configuration.
- 6 kA rated breaking capacity.
- Provides overload, short circuit and isolation protection.
- Designed for AC 50/60 Hz low-voltage systems.
- Compact modular construction for DIN rail mounting.
Reliable Protection for High Inrush Current Circuits
Miniature circuit breakers automatically disconnect electrical circuits during overload or short circuit conditions, helping protect wiring, connected equipment and personnel. The NB1-63D4P32 combines thermal and magnetic trip mechanisms to provide fast, dependable fault protection in low-voltage distribution systems.
Its D curve characteristic is designed for circuits with high starting currents, making it suitable for motors, transformers and other inductive equipment while helping reduce nuisance tripping during normal start-up conditions.
Typical Applications
- Industrial distribution boards.
- Motor and transformer circuits.
- Three-phase electrical installations.
- Commercial switchboards.
- Machine building and OEM equipment.
- Control panels with high inrush current loads.
Technical Specifications
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| Current | 32 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | Chint | |
| Series | NB1-63 | |
| Model | NB1-63D4P32 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 32 A | |
| Number of poles | 4 Pole | |
| Tripping characteristic | D Curve | |
| Rated breaking capacity | 6 kA | |
| Rated short-circuit service capacity | 6 kA | |
| Rated voltage | 400 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Rated insulation voltage | 500 V | |
| Rated impulse withstand voltage | 4 kV | |
| Standard | IEC/EN 60898-1 | |
| Mounting type | 35 mm DIN rail | |
| Protection rating | IP20 | |
| Mechanical life | Up to 20,000 operations | |
| Electrical life | Up to 4,000 operations | |
| Width | 18 mm per pole |
Frequently Asked Questions
What is the Chint NB1-63D4P32 used for?
It is used to protect four-pole low-voltage electrical circuits against overloads and short circuits while providing safe isolation for maintenance.
What current rating does this miniature circuit breaker have?
The NB1-63D4P32 has a rated current of 32 A.
What does D curve mean on this MCB?
A D curve MCB is designed for circuits with high inrush currents, such as motors, transformers, compressors and other inductive loads.
What is the breaking capacity of the NB1-63D4P32?
The NB1-63D4P32 has a rated short circuit breaking capacity of 6 kA.
How is this circuit breaker installed?
It is designed for installation onto a standard 35 mm DIN rail inside electrical distribution boards, switchboards and control panels.
Trusted by Electrical Professionals Worldwide
Chint NB1 miniature circuit breakers are trusted by electricians, panel builders and industrial engineers for reliable overload protection, dependable short circuit interruption and long service life in low-voltage electrical installations.
