CHINT NB3LEU-B20 20A 30mA B-Curve 1P+N RCBO

Original price was: £43.72.Current price is: £24.95. £29.94 Inc VAT

The CHINT NB3LEU-B20 integrates overcurrent and earth leakage protection into a single, compact device. This 20 Amp RCBO features a B-Curve tripping characteristic, making it the perfect choice for domestic and light commercial ring mains or appliance circuits. Specifically, the 30mA sensitivity provides essential life-saving protection against electric shocks. Furthermore, its 1-Pole + Neutral (1P+N) configuration ensures complete circuit isolation during a fault.

2 in stock

Estimated Standard Delivery May 19, 2026 - May 20, 2026

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

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