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Chint NB1-63B1P03 MCB – 1P – B Curve – 3A – 6kA
Chint NB1-63B1P03 1 pole miniature circuit breaker with 3 A rated current, B curve tripping characteristic and 6 kA breaking capacity for overload and short-circuit protection.
£2.92
Why Choose the Chint NB1-63B1P03 Miniature Circuit Breaker?
The Chint NB1-63B1P03 is a compact and reliable 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 dependable circuit protection for residential, commercial and light industrial installations.
This 1 pole B curve MCB features a 3 A rated current, making it suitable for low current circuits such as lighting control, control panels, auxiliary supplies and sensitive electrical equipment. The B curve tripping characteristic is designed for circuits with low inrush currents.
With a rated short-circuit breaking capacity of 6 kA and a standard 35 mm DIN rail mounting format, the NB1-63B1P03 is easy to install in consumer units, distribution boards and electrical panels. Its compact modular design supports neat, safe and serviceable electrical assemblies.
Key Advantages
- Compact 1 pole miniature circuit breaker.
- 3 A rated current for low current electrical circuits.
- B curve trip characteristic for circuits with low inrush current.
- 6 kA short-circuit breaking capacity.
- Reliable overload and short-circuit protection.
- DIN rail mounting for quick installation in distribution boards.
Key Features
- Chint NB1-63 series MCB.
- 3 A rated current.
- B curve tripping characteristic.
- 1 pole configuration.
- 6 kA rated breaking capacity.
- 230 V AC rated voltage.
- DIN rail mounting.
- Suitable for overload and short-circuit protection.
Reliable Protection for Low Current Circuits
Miniature circuit breakers such as the Chint NB1-63B1P03 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 B curve characteristic makes this MCB suitable for circuits with low inrush currents, including lighting control, auxiliary control circuits and other low current electrical loads. Its modular DIN rail design allows straightforward integration into new or existing distribution systems.
Typical Applications
- Residential consumer units.
- Commercial distribution boards.
- Lighting and lighting control circuits.
- Control panels and auxiliary supplies.
- Low current electrical circuits.
- General electrical installations requiring 3 A protection.
Technical Specifications
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| Current | 3 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | Chint | |
| Series | NB1-63 | |
| Model | NB1-63B1P03 | |
| Product type | Miniature circuit breaker / MCB | |
| Rated current | 3 A | |
| Number of poles | 1 pole | |
| Tripping characteristic | B curve | |
| Rated voltage | 230 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Rated short-circuit breaking capacity | 6 kA | |
| Rated insulation voltage | 500 V | |
| Rated impulse withstand voltage | 4 kV | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail | |
| Standards | IEC / EN 60898-1 |
Frequently Asked Questions
What is the Chint NB1-63B1P03 used for?
The Chint NB1-63B1P03 is used to protect low current electrical circuits against overloads and short circuits.
What current rating does this MCB have?
This miniature circuit breaker has a rated current of 3 A.
What does the B curve characteristic mean?
A B curve MCB trips between 3 and 5 times its rated current, making it suitable for circuits with low inrush currents.
What is the breaking capacity of this MCB?
The NB1-63B1P03 has a rated short-circuit breaking capacity of 6 kA.
How is the NB1-63B1P03 installed?
The device is designed for installation onto a standard 35 mm DIN rail inside consumer units, distribution boards and electrical panels.
Trusted by Electrical Professionals Worldwide
Chint miniature circuit breakers are trusted by electricians, panel builders and maintenance engineers for dependable circuit protection across residential, commercial and industrial electrical installations.
