20A B Curve 30mA A Type 6KA 1P+N RCBO (Model: NB3LEG-B20)
The 20A B Curve 30mA A Type 6KA 1P+N RCBO (Model: NB3LEG-B20) from CHINT provides dependable protection for modern electrical installations. It combines over-current and residual current protection in a single compact unit, helping to keep people and property safe from electrical faults.
Rated at 20 amps, this RCBO is ideal for general lighting and socket circuits. The B Curve tripping characteristic ensures reliable performance on circuits with moderate inrush currents, while the 30mA residual current sensitivity offers essential personal protection against electric shock.
With a Type A residual current design, the NB3LEG-B20 can detect both AC and pulsating DC leakage currents. This makes it suitable for use with modern appliances and electronic equipment commonly found in homes and small commercial settings.
The unit features a 6kA short-circuit breaking capacity, delivering strong fault protection in demanding conditions. Its 1P+N configuration saves space inside consumer units, making it a practical choice where panel space is limited.
Manufactured to recognised safety standards, this RCBO is built for long-term reliability. It mounts easily onto a standard 35mm DIN rail, allowing for straightforward installation and maintenance.
Whether you are upgrading an existing consumer unit or fitting out a new installation, the CHINT NB3LEG-B20 RCBO offers a trusted, all-in-one solution for circuit protection.
Tracked Delivery (Currently 1-3 business days):
- Free over £150.
- £5.99 for orders under £150.
- £5.99 for orders under £50.
Next Business Day Delivery:
- £15 Flat Rate.
Collection:
- Free to collect from our warehouse.
Pre-Order:
- 5-10 Business Days delivery unless otherwise stated.

