Fast Delivery
Expert Support

10A B Curve 30mA A Type 6KA 1P+N RCBO (NB3LEG-B10)

A compact, dual-function circuit protector with 10 A rating, Type A 30 mA residual protection, and B-curve tripping. Designed for DIN rail installation, it gives reliable overload, short-circuit and leakage detection in one unit.

Dual protection in one device: Combined RCD and MCB for comprehensive circuit safety. High-sensitivity Type A trip: Detects AC and pulsating DC leakage for modern circuits. B-curve tripping: Ideal for general-purpose circuits with standard load profiles. Compact and DIN rail ready: Saves space in consumer units and fits standard installation setups. Robust safety performance: 6 kA breaking capacity with compliance to BS EN/IEC 61009-1.
£26.40
or pay interest-free installments
Klarna
PayPal
Add to Wishlist
SKU: NB3LEG-B10
AVAILABLE IN 7-10 DAYS
Product Details

The Chint NB3LEG-B10 RCBO is a reliable protective device designed to keep electrical circuits secure and compliant. Combining residual current detection and over-current protection in one compact unit, it safeguards against overloads, short-circuits and earth leakage faults while helping to protect people and property from electric shock and fire risk.

Engineered with a 10 amp rated current, this RCBO is ideal for domestic and light commercial electrical circuits such as lighting circuits, socket outlets and small appliance feeds. It features a B-curve tripping characteristic, offering fast and accurate response to overloads typical in everyday circuits.

With 30 milliamp Type A sensitivity, the unit detects both AC and pulsating DC residual currents, providing extra protection where modern electronic equipment is used. The compact 1P + N (single pole plus neutral) configuration makes installation quick and efficient on standard DIN rails.

Built to meet rigorous standards, the NB3LEG-B10 has a 6 kiloamp short-circuit breaking capacity that ensures the unit can safely interrupt high fault currents without damage. Its robust design includes a contact position indicator and complies with BS EN/IEC 61009-1 safety norms for consumer units and distribution boards.

Compact and dependable, the NB3LEG-B10 offers peace of mind in every installation. Whether you are wiring a new build or upgrading an existing consumer unit, this RCBO gives essential protective performance in a space-saving module that supports clean, organised electrical distribution.

Shipping & Collection

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.

Shipping Polic

Ask The AI About This Product

Looking for something Bespoke?

As a leading UK Victron Distributor and the Official UK Pytes Distributor our in house engineering team can deliver bespoke solutions. We handle design, specification, and system optimisation to meet your specific needs, regardless of size, weight, environmental, or regulatory constraints. From DIY projects up to large scale commercial projects our team can do it all.

Talk To An Engineer