Description
Upgrade your electrical safety with the CHINT NB3LEU-B20. This Residual Current Breaker with Overcurrent protection (RCBO) streamlines your consumer unit by combining the functions of an MCB and an RCD. Accordingly, this allows for individual circuit protection, preventing “nuisance tripping” across the rest of your installation if one specific device develops a fault.
CHINT engineers designed this unit for reliability and efficient installation. Specifically, the 6kA breaking capacity provides robust defense against short circuits in standard residential and commercial environments. Moreover, the B-Curve characteristic ensures the device trips quickly during minor overloads. Consequently, this protects your wiring and helps prevent potential electrical fires.
The NB3LEU series features a user-friendly design. It includes a clear trip indicator and an easy-access “Test” button to ensure the internal mechanism functions correctly. Additionally, the compact profile saves valuable space within the distribution board. Specifically, the high-quality DIN-rail mounting clips allow for a secure and vibration-resistant fit. By choosing the CHINT NB3LEU-B20, you invest in a cost-effective, high-performance safety component that meets all modern UK wiring regulations.
Key Benefits:
-
Dual Protection: Safeguards against both overcurrent (overload/short circuit) and earth leakage.
-
Independent Circuit Isolation: Ensures a single fault does not result in a total power loss.
-
Standard B-Curve: Perfectly suited for typical domestic power and radial circuits.
-
Space-Saving Design: Fits easily into modern CHINT and industry-compatible consumer units.
-
Certified Reliability: Fully compliant with international safety standards for guaranteed performance.
Technical Specifications
| Feature | Specification |
| Manufacturer | CHINT |
| Product Code | NB3LEU-B20 |
| Current Rating | 20 Amp |
| Sensitivity | 30mA |
| Tripping Curve | B-Curve |
| Breaking Capacity | 6kA |
| Poles | 1P + N (Switched) |
| Voltage | 230V / 240V AC |
| Mounting | DIN Rail |
| Compliance | BS EN 61009-1 |






