facebook pixel RCBO - Residual Current Breaker with Over-Current Protection
National  8:00am to 5pm - Mon-Fri
Quotes
020 7736 5755
sales@electrical4less.co.uk
VAT:
Quotes
Electrical 4 Less
0
Electrical4less Reviews 4.9 Based on 1173 reviews
UK Mainland Free Delivery £75 + VAT
14 Day Return Policy
Next Day Delivery Cut Off Time 3PM*

RCBO - Residual Current Breaker with Over-Current

Showing 141–160 of 200 results

Bi-Directional 30mA RCBO

Bi-Directional 30mA RCBO (46)

Bi-Directional 100mA RCBO

Bi-Directional 100mA RCBO (2)

1 Module RCBO 6kA

1 Module RCBO 6kA (54)

1 Module RCBO 10kA

1 Module RCBO 10kA (69)

2 Module 2 Pole RCBO 6kA

2 Module 2 Pole RCBO 6kA (38)

Three Phase RCBO 3P + N

Three Phase RCBO 3P + N (16)

Niglon RCBO1-32/30SSAX 32A Curve B 30mA A Type RCBO

Niglon RCBO1-32/30SSAX 32A Curve B 30mA A Type RCBO

60 In stock
More available within 1-3 working days*
SKU: RCBO1-32/30SSAX
£13.20
Add to quote
Niglon RCBO1-40/30SSAX 40A Curve B 30mA A Type RCBO

Niglon RCBO1-40/30SSAX 40A Curve B 30mA A Type RCBO

78 In stock
More available within 1-3 working days*
SKU: RCBO1-40/30SSAX
£13.20
Add to quote
Hager ADA145U Type A RCBO

Hager ADA190U RCBO 10kA C-40A 30mA Type A

2 In stock
This item cannot be back-ordered
SKU: ADA190U
£30.99
Add to quote
FuseBox RTA102530B FuseBox RTA102530B 25A 30mA 10kA B Curve Type A RCBO

FuseBox RTA102530B 25A 30mA 10kA B Curve Type A RCBO

14 In stock
More available within 1-3 working days*
SKU: RTA102530B
£17.44
Add to quote
Hager ADB410U Hager ADB410U RCBO 10kA B-10A 30mA Type A

Hager ADB410U RCBO 10kA B-10A 30mA Type A

7 In stock
More available within 1-3 working days*
SKU: ADB410U
£35.76
Add to quote
Hager ADC406U Hager ADC406U RCBO 10kA C-6A 30mA Type A

Hager ADC406U RCBO 10kA C-6A 30mA Type A

8 In stock
More available within 1-3 working days*
SKU: ADC406U
£35.76
Add to quote
Hager ADC410U Hager ADC410U RCBO 10kA C-10A 30mA Type A

Hager ADC410U RCBO 10kA C-10A 30mA Type A

4 In stock
More available within 1-3 working days*
SKU: ADC410U
£35.76
Add to quote
Hager ADA145U Type A RCBO

Hager ADA145U RCBO 10kA B-45A 30mA Type A

1 In stock
This item cannot be back-ordered
SKU: ADA145U
£30.99
Add to quote
FuseBox Bi-Directional Mini RCBO 06A C Curve 30mA Type A - Compact and Reliable Protection

FuseBox Bi-Directional Mini RCBO 16A C Curve 30mA Type A – Compact and Reliable Protection

34 In stock
More available within 1-3 working days*
SKU: RTAMC16BD
£16.95
Add to quote
FuseBox Bi-Directional Mini RCBO 06A C Curve 30mA Type A - Compact and Reliable Protection

FuseBox Bi-Directional Mini RCBO 25A C Curve 30mA Type A – Compact and Reliable Protection

9 In stock
More available within 1-3 working days*
SKU: RTAMC25BD
£16.95
Add to quote
FuseBox Bi-Directional Mini RCBO 06A C Curve 30mA Type A - Compact and Reliable Protection

FuseBox Bi-Directional Mini RCBO 40A C Curve 30mA Type A – Compact and Reliable Protection

39 In stock
More available within 1-3 working days*
SKU: RTAMC40BD
£16.95
Add to quote
Hager ADA990U 1P+N 6kA C-40A 30mA Type A

Hager ADA990U 1P+N 6kA C-40A 30mA Type A

1 In stock
More available within 1-3 working days*
SKU: ADA990U
£26.28
Add to quote
Live Electrical 3P+N 50A C Curve 30mA Type A RCBO

Live Electrical 3P+N 50A C Curve 30mA Type A RCBO

1 In stock
More available within 1-3 working days*
SKU: RTN350C-030N
£79.95
Add to quote
Live Electrical RNA20C-030 RCBO A Type DP Bi-Directional 20A C Curve 30mA

Live Electrical RNA20C-030 RCBO A Type DP Bi-Directional 20A C Curve 30mA

9 In stock
More available within 1-3 working days*
SKU: RNA20C-030
£16.06

3-£15.74£0.32£16.06
5-£15.26£0.80£16.06
10-£14.78£1.28£16.06
Add to quote
WCED WRT125C-030 Bi-Directional 10kA Type A 30mA RCBO Curve C 25A

WCED WRT125C-030 Bi-Directional 10kA Type A 30mA RCBO Curve C 25A

Delivery usually within 1-3 working days*
SKU: WRT125C-030
£13.50
Add to quote
WCED WRT140C-030 Bi-Directional 10kA Type A 30mA RCBO Curve C 40A

WCED WRT140C-030 Bi-Directional 10kA Type A 30mA RCBO Curve C 40A

10 In stock
More available within 1-3 working days*
SKU: WRT140C-030
£13.50
Add to quote
Niglon RCBO1-6/30SSAX2 6A RCBO – Bi-Directional, Type A, Curve B, 30mA, 6kA, Compact 18mm RCBO.

Niglon RCBO1-6/30SAX2 6A Curve B 30mA Bi-Directional A Type RCBO

4 In stock
More available within 1-3 working days*
SKU: RCBO1-6/30SAX2
£15.18
Add to quote
Niglon RCBO1-16/30SAX2 16A RCBO – Compact, Bi-Directional, Type A, Curve B, 30mA, 6kA RCBO.

Niglon RCBO1-16/30SAX2 16A Curve B 30mA Bi-Directional A Type RCBO

2 In stock
More available within 1-3 working days*
SKU: RCBO1-16/30SAX2
£15.18
Add to quote
Niglon RCBO1-40/30SAX2 40A RCBO – Type A, Curve B, 30mA, Bi-Directional, 6kA, Compact RCBO for high-load circuits.

Niglon RCBO1-40/30SAX2 40A Curve B 30mA Bi-Directional A Type RCBO

1 In stock
More available within 1-3 working days*
SKU: RCBO1-40/30SAX2
£15.18
Add to quote
Live Electrical AMR140B-100 40A RCBO with 100mA Type A protection and bi-directional design for PV installations Live Electrical AMR140B-100 100mA Bi-Directional Type A Compact RCBO 40A B Curve

Live Electrical AMR140B-100 100mA Bi-Directional Type A Compact RCBO 40A B Curve

Delivery usually within 1-3 working days*
SKU: AMR140B-100
£9.99
Add to quote
More products

Showing 141–160 of 200 results

Key Types of RCBOs

  1. Single Pole RCBO:
    Protects a single live phase while detecting earth leakage. It is widely used for residential circuits such as lighting, sockets, or individual appliances, fitting seamlessly into consumer units or distribution boards.
  2. Double Pole RCBO:
    Protects both live and neutral conductors while detecting earth leakage. Commonly used in single-phase circuits that require neutral disconnection, such as outdoor power supplies, HVAC systems, or caravans. It enhances safety by isolating both conductors during faults.
  3. Three-Pole RCBO:
    Designed to protect three-phase circuits in commercial and industrial systems. These RCBOs are ideal for motor controls, machinery, and large-scale electrical systems.
  4. Bi-Directional RCBO:
    Bi-directional RCBOs provide protection against residual currents and overcurrents flowing in either direction. They are essential in circuits with multiple power sources, such as solar PV systems, battery storage, and EV chargers. These devices ensure fault detection regardless of current flow direction, offering enhanced safety in renewable energy setups.
Type A RCBOs and Why They Are Superior
  • Type A RCBO:
    Detects both standard AC residual currents and pulsating DC residual currents. Type A is highly recommended for modern circuits with electronic devices such as LED lighting, computers, EV chargers, and appliances with variable-speed drives.
  • Type AC RCBO:
    Detects only standard AC residual currents. However, Type AC has become obsolete due to its inability to handle DC components that may saturate the device, reducing its effectiveness. Modern installations should always use Type A for enhanced safety and compliance with evolving standards.
Tripping Curves

RCBOs are available with specific tripping curves, each designed to handle different load characteristics:

  • Curve B:
    Suitable for circuits with purely resistive loads, such as lighting or heating, where minimal inrush current is expected.
  • Curve C:
    Designed for circuits with moderate inrush currents, such as those involving fluorescent lighting or small motors. This makes Curve C ideal for most commercial and industrial applications.
Key Features
  • Comprehensive Protection:
    Combines overload, short circuit, and residual current protection in one device.
  • 30mA Sensitivity:
    All RCBOs in this category are rated at 30mA, ensuring effective protection against earth leakage faults for personal and equipment safety.
  • Current Ratings:
    Available in a range of amperages, from 6A to 50A, making them suitable for various circuit loads.
  • Bi-Directional Functionality:
    Ensures protection in circuits where current flow can reverse, such as renewable energy setups or EV chargers.
  • Compact Design:
    Space-saving construction allows for easy integration into consumer units and distribution boards.
  • Standards Compliance:
    Conforms to IEC 61009-1 and BS EN 61009, ensuring safety and reliability.
Applications
  • Residential Circuits:
    Provides safety for individual circuits such as lighting, power sockets, and kitchen appliances.
  • Commercial Installations:
    Protects essential systems such as HVAC, elevators, and lighting in offices, retail spaces, and schools.
  • Industrial Systems:
    Ensures the safety of machinery, motor controls, and high-load circuits in factories and warehouses.
  • Renewable Energy Systems:
    Ideal for solar PV arrays, battery storage systems, and EV chargers, particularly with bi-directional functionality.
Benefits of RCBOs
  • Enhanced Safety:
    Protects against both overcurrent and residual current faults, minimizing fire risks and electric shock hazards.
  • Improved Circuit Isolation:
    Isolates faulty circuits without disrupting power to the rest of the system, reducing downtime and inconvenience.
  • Future-Proofing:
    Type A RCBOs and bi-directional functionality ensure compatibility with modern electrical systems and renewable energy setups.
  • Compliance with Standards:
    Fully adheres to international safety standards, ensuring reliability and durability.

RCBOs are indispensable in modern electrical installations, offering unmatched safety, reliability, and versatility. Explore our range of single pole, double pole, three-pole, and bi-directional RCBOs to find the ideal solution for your needs. With options like Type A RCBOs and Curve B or C tripping profiles, you can ensure superior protection for any application.

READ MORE
© 2025 Electrical 4 Less
Electrical 4 Less

    Electrical 4 Less
    whatsup-logo
    Delivery Policy
    Free Next-Day Delivery Over £75 + VAT:
    Orders above £75 + VAT qualify for free next-day delivery via DPD for in-stock items. While we strive for timely dispatch, we recommend placing orders early to avoid potential delays. Once dispatched, unexpected issues may arise despite the courier’s efforts.

    Orders Below £150 + VAT:
    To keep costs manageable, we dispatch your order once all items are ready, including products with longer lead times.

    Need items faster? You can pay for an additional delivery service to receive in-stock items sooner. Simply email us with your order details, and we’ll send you a payment link for the extra delivery cost.

    Orders Above £150 + VAT:
    For larger orders, we can split delivery at no extra cost. In-stock items will be sent immediately, with the remaining items dispatched once available.
    Dispatch Times
    Items with Lead Times (e.g., 1–3 Working Days):
    This means we need to source the product from our supplier before sending it to you. The estimated dispatch time is displayed on each product page.

    Out of Stock at Supplier:
    If an item is unavailable at the supplier, we will contact you promptly. You’ll have the option to choose an alternative product or request a full refund.