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Chint NB3LE-B10 RCBO – 1P+N – B Curve – Type AC – 10A – 30mA – 6kA
Chint NB3LE-B10 RCBO featuring a 10 A current rating, B curve tripping characteristic, 30 mA residual current sensitivity and 6 kA breaking capacity for reliable circuit protection.
£23.44
Why Choose the Chint NB3LE-B10 RCBO?
The Chint NB3LE-B10 is a compact and reliable residual current operated circuit breaker with over-current protection (RCBO) designed for residential, commercial and light industrial electrical installations. As part of the Chint NB3LE series, it combines earth leakage protection, overload protection and short-circuit protection in one modular device.
This RCBO features a 1P+N configuration, making it suitable for single-phase circuits requiring both live and neutral switching. Its B curve tripping characteristic is ideal for circuits with low inrush currents, while the 30 mA residual current sensitivity provides additional protection against electric shock.
With a rated current of 10 A, a rated voltage of 240 V AC and a short-circuit breaking capacity of 6 kA, the NB3LE-B10 is well suited to lighting circuits, control circuits and general low-load final circuits. Its DIN rail mounting design supports quick and secure installation in consumer units and distribution boards.
Key Advantages
- Compact RCBO combining RCD and MCB protection.
- 10 A rated current for low-load final circuits.
- 30 mA residual current sensitivity for additional protection.
- B curve characteristic suitable for circuits with low inrush current.
- 6 kA short-circuit breaking capacity for dependable fault protection.
- DIN rail mounting for fast installation in consumer units and distribution boards.
Key Features
- Chint NB3LE series electronic RCBO.
- 10 A rated current.
- 30 mA residual operating current.
- 1P+N configuration.
- B curve over-current protection.
- 6 kA rated short-circuit capacity.
- Provides overload, short-circuit and earth leakage protection.
- DIN rail mounting for modular electrical assemblies.
Combined Circuit and Earth Leakage Protection
RCBOs such as the Chint NB3LE-B10 combine the functions of an MCB and an RCD in a single device. This allows the circuit to disconnect automatically in the event of overload, short circuit or earth leakage, helping improve electrical safety while reducing the number of protective devices required within the distribution board.
The NB3LE-B10 is suitable where individual circuit protection is required. By protecting each final circuit independently, RCBOs help minimise disruption, as a fault on one circuit is less likely to disconnect other protected circuits.
Typical Applications
- Consumer units and distribution boards.
- Lighting circuits.
- Residential electrical installations.
- Commercial building circuits.
- Control circuits and auxiliary supplies.
- Electrical panels requiring combined over-current and residual current protection.
Technical Specifications
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| Current | 10 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole + N | |
| Device Type | RCBO | |
| Trip Curve | B curve | |
| Breaking Capacity | 6 kA | |
| Residual Current | 30 mA | |
| RCD Type | Type AC | |
| Manufacturer | Chint | |
| Series | NB3LE | |
| Model | NB3LE-B10 | |
| Product type | Residual current operated circuit breaker with over-current protection / RCBO | |
| Number of poles | 1P+N | |
| Rated current | 10 A | |
| Residual operating current | 30 mA | |
| Residual current type | Type AC | |
| Tripping curve | B curve | |
| Rated voltage | 240 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Rated short-circuit capacity | 6 kA | |
| Rated insulation voltage | 500 V | |
| Rated impulse withstand voltage | 4 kV | |
| Mounting type | 35 mm DIN rail | |
| Protection rating | IP20 | |
| Operating temperature | approx. -5 to +40°C | |
| Standards | IEC / EN 61009-1 |
Frequently Asked Questions
What is the Chint NB3LE-B10 used for?
The Chint NB3LE-B10 provides overload, short-circuit and residual current protection for single-phase electrical circuits.
What current rating does this RCBO have?
The NB3LE-B10 has a rated current of 10 A.
What does the B curve characteristic mean?
A B curve RCBO trips between 3 and 5 times its rated current, making it suitable for lighting circuits and other circuits with low inrush currents.
What residual current sensitivity does it provide?
This RCBO has a residual operating current sensitivity of 30 mA, providing additional protection against electric shock.
Does this RCBO include over-current protection?
Yes. The NB3LE-B10 combines overload, short-circuit and residual current protection within a single compact device.
Trusted by Electrical Installers Worldwide
Chint RCBOs are trusted by electrical contractors, panel builders and maintenance engineers for dependable circuit protection across residential, commercial and industrial electrical installations.
