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Chint NB1-63CH2P20 MCB – 2P – C Curve – 20A – 10kA
Chint NB1-63CH2P20 2 pole miniature circuit breaker with 20 A rated current, C curve tripping characteristic and 10 kA breaking capacity for overload and short-circuit protection.
£10.33
Why Choose the Chint NB1-63CH2P20 Miniature Circuit Breaker?
The Chint NB1-63CH2P20 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 NB1-63H series, it provides reliable circuit protection for residential, commercial and industrial electrical installations where a higher breaking capacity is required.
This 2 pole C curve MCB features a 20 A rated current, making it suitable for socket circuits, radial circuits, lighting circuits, control circuits and lightly inductive loads. The C curve tripping characteristic allows for moderate inrush currents, making it suitable for mixed resistive and inductive applications.
With a rated short-circuit breaking capacity of 10 kA and a standard 35 mm DIN rail mounting format, the NB1-63CH2P20 is easy to install within consumer units, distribution boards and electrical control panels. Its 2 pole design enables simultaneous disconnection of both conductors for improved circuit isolation.
Key Advantages
- Compact 2 pole miniature circuit breaker.
- 20 A rated current for socket, radial and control circuits.
- C curve trip characteristic for moderate inrush current loads.
- 10 kA short-circuit breaking capacity.
- Reliable overload and short-circuit protection.
- DIN rail installation in distribution boards and control panels.
Key Features
- Chint NB1-63H series MCB.
- 20 A rated current.
- C curve tripping characteristic.
- 2 pole configuration.
- 10 kA breaking capacity.
- 230 / 400 V AC rated voltage.
- DIN rail mounting.
- Suitable for overload, short-circuit protection and circuit isolation.
Reliable Protection for Mixed Load Circuits
Miniature circuit breakers such as the Chint NB1-63CH2P20 automatically disconnect electrical circuits when overloads or short circuits occur. This helps protect wiring, connected equipment and electrical installations from damage caused by excessive current.
The C curve characteristic makes this MCB suitable for circuits with moderate inrush currents, including socket circuits, radial circuits, control panels, auxiliary supplies, relays, small transformers and mixed electrical loads where a B curve device may nuisance trip.
Typical Applications
- Residential consumer units.
- Commercial distribution boards.
- Socket outlet circuits.
- Radial final circuits.
- Control and auxiliary circuits.
- Electrical installations requiring 20 A protection.
Technical Specifications
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| Current | 20 A | |
|---|---|---|
| Poles | 2-pole | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | Chint | |
| Series | NB1-63H | |
| Model | NB1-63CH2P20 | |
| Product type | Miniature circuit breaker / MCB | |
| Rated current | 20 A | |
| Number of poles | 2 pole | |
| Tripping characteristic | C curve | |
| Rated voltage | 230 / 400 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Rated short-circuit breaking capacity | 10 kA | |
| Rated insulation voltage | 500 V | |
| Rated impulse withstand voltage | 6 kV | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail | |
| Standards | IEC / EN 60898-1 |
Frequently Asked Questions
What is the Chint NB1-63CH2P20 used for?
The Chint NB1-63CH2P20 protects electrical circuits against overloads and short circuits, particularly socket circuits, radial circuits, control circuits and auxiliary supplies.
What current rating does this MCB have?
This miniature circuit breaker has a rated current of 20 A.
What does the C curve characteristic mean?
A C curve MCB trips between 5 and 10 times its rated current, making it suitable for mixed resistive and inductive loads with moderate inrush currents.
What is the breaking capacity of this MCB?
The NB1-63CH2P20 has a rated short-circuit breaking capacity of 10 kA.
How is the NB1-63CH2P20 installed?
The device mounts 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.
