VAT:
Quotes
  • 0
    • Electrical4less Logo
    0
    Electrical4less Reviews 4.9 Based on 1488 reviews
    UK Mainland Free Delivery £75 + VAT
    30 Day Return Policy
    Next Day Delivery Cut Off Time 3PM*

    RCBO - Residual Current Breakers with Over-Current

    Live Electrical RKA140B-030 10kA Type A B Curve Compact 40A Bi-Directional RCBO

    Live Electrical RKA140B-030 10kA Type A B Curve Compact 40A Bi-Directional RCBO
    Delivery usually within 1 - 3 working days *
    SKU: RKA140B-030
    £11.59
    FuseBox R3PN10B3230BD Curve B 3 Phase 32A RCBOFuseBox 3 Phase RCBO - Front

    FuseBox R3PN10B3230BD 32A 3P+N Curve B Bi-Directional RCBO
    11 in stock
    This item cannot be back-ordered
    SKU: R3PN10B3230BD
    £64.72
    WCED WRT120B-030 Bi-Directional 10kA Type A 30mA RCBO Curve B 20A

    WCED WRT120B-030 Bi-Directional 10kA Type A 30mA RCBO Curve B 20A
    Delivery usually within 1 - 3 working days *
    SKU: WRT120B-030
    £12.50
    Timeguard TX2416 16A Type A RCBO

    Timeguard | TX2416 | B Curve | 6kA | Type A RCBO | 16A
    3 in stock
    More available within 1 - 3 working days *
    SKU: TX2416
    £9.30
    WCED WER06B-030 WCED Double Pole Type A 30mA RCBO Curve B - 6A

    WCED Double Pole Type A 30mA RCBO Curve B – 6A
    12 in stock
    More available within 1 - 3 working days *
    SKU: WER06B-030
    £16.80
    Hager ADC910R Hager 30mA Type A 10A 6kA C Curve 1M 1P+N Bi-Directional RCBO

    Hager ADC910R 30mA Type A 10A 6kA C Curve 1M 1P+N Bi-Directional RCBO
    2 in stock
    More available within 1 - 3 working days *
    SKU: ADC910R
    £19.43
    Hager ADB406U Hager ADB406U RCBO 10kA B-6A 30mA Type A

    Hager ADB406U RCBO 10kA B-6A 30mA Type A
    2 in stock
    More available within 1 - 3 working days *
    SKU: ADB406U
    £35.76
    Live Electrical 3P+N 40A B Curve 30mA Type A RCBO

    Live Electrical 3P+N 40A B Curve 30mA Type A RCBO
    Delivery usually within 1 - 3 working days *
    SKU: RTN340B-030N
    £45.15
    Niglon PRCB01B1-06 1P + Neutral 6A Curve B Bi-Directional 10kA RCBO

    Niglon PRCBO10B1-06 1P + Neutral 6A Curve B Bi-Directional 10kA RCBO
    6 in stock
    More available within 1 - 3 working days *
    SKU: PRCBO10B1-06
    £19.21
    Niglon PRCB01B1-16 1P + Neutral 16A Curve B Bi-Directional 10kA RCBO

    Niglon PRCBO10B1-16 1P + Neutral 16A Curve B Bi-Directional 10kA RCBO
    5 in stock
    More available within 1 - 3 working days *
    SKU: PRCBO10B1-16
    £19.21
    Niglon PRCB01C1-32 1P + Neutral 32A Curve C Bi-Directional 10kA RCBO

    Niglon PRCBO10C1-32 1P + Neutral 32A Curve C Bi-Directional 10kA RCBO
    10 in stock
    More available within 1 - 3 working days *
    SKU: PRCBO10C1-32
    £19.21
    Garo DCBO1MB20 20A Curve B 1 Module 2 Pole Type A RCBO

    Garo DCBO1MB20 20A Curve B 1 Module 2 Pole Type A Bi-Directional RCBO
    Delivery usually within 1 - 3 working days *
    SKU: DCBO1MB20
    £21.48
    Garo DCBOGRB20-BI Bi-Directional RCBO

    Garo DCBOGRB20-BI 30mA Bi-Directional Type A Compact RCBO 20A B Curve
    5 in stock
    More available within 1 - 3 working days *
    SKU: DCBOGRB20-BI
    £14.92
    Garo DCBOGRB06 Compact RCBO 6A B Curve

    Garo DCBOGRB06 30mA Type A Compact RCBO 6A B Curve
    10 in stock
    More available within 1 - 3 working days *
    SKU: DCBOGRB06
    £10.99
    Timeguard TX2432 32A Type A RCBO

    Timeguard | TX2432 | B Curve | 6kA | Type A RCBO | 32A
    2 in stock
    More available within 1 - 3 working days *
    SKU: TX2432
    £9.30
     Hager ADA156U RCBO 10kA C-6A 30mA Type A

     Hager ADA156U RCBO 10kA C-6A 30mA Type A
    2 in stock
    More available within 1 - 3 working days *
    SKU: ADA156U
    £30.99
    WCED Double Pole Type A 30mA RCBO Curve C - 10A

    WCED Double Pole Type A 30mA RCBO Curve C – 10A
    Delivery usually within 1 - 3 working days *
    SKU: WER10C-030
    £16.80
    FuseBox RTA105030B FuseBox RTA105030B 50A 10kA 30mA B Curve Type A RCBO

    FuseBox RTA105030B 50A 10kA 30mA B Curve Type A RCBO
    11 in stock
    More available within 2 - 3 working days *
    SKU: RTA105030B
    £15.99
    FuseBox RTA102530C FuseBox RTA102530C 25A 10kA 30mA C Curve Type A RCBO

    FuseBox RTA102530C 25A 10kA 30mA C Curve Type A RCBO
    14 in stock
    More available within 2 - 3 working days *
    SKU: RTA102530C
    £15.99
    Hager ADC920R Hager 30mA Type A 20A 6kA C Curve 1M 1P+N Bi-Directional RCBO

    Hager ADC920R 30mA Type A 20A 6kA C Curve 1M 1P+N Bi-Directional RCBO
    1 in stock
    More available within 1 - 3 working days *
    SKU: ADC920R
    £19.43

    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.






    © 2026 Electrical4less
    We accept Visa We accept Mastercard We accept Maestro We accept PayPal We use Amazon Pay We use Apple Pay We use Google Pay
    Next Day Delivery

    Cut-Off Time and Order Information
    To ensure your order qualifies for next day delivery, please place your order by 3:00 PM. This is subject to all items being available on the shelf at the time of your order. For orders where the total value exceeds £150 + VAT (double our standard carriage-paid order value of £75 + VAT), we are happy to split the delivery into two shipments if some items are needed urgently and others are not immediately available. If you have any questions or need further assistance, feel free to reach out to us via WhatsApp for live support. We’re here to help!

    In Stock 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.

    Backorder Delivery Policy

    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.

    Didn't find what you're looking for?

    No problem — message us directly on WhatsApp and we’ll help you out.

    We usually respond within minutes during working hours.

    Cookie Preferences
    We use cookies to enhance your browsing experience, serve personalised content, and analyse our traffic. By clicking "Accept All", you consent to our use of cookies. To find out more about how we use cookies please view our Privacy Policy.

    Cookie Preferences

    We use cookies to help you navigate the site and use its features. Below you will find details about each cookie category.

    Cookies marked as "Necessary" are stored in your browser and are required for the site to function properly.

    We also use third-party cookies to analyse site usage, remember your preferences, and show you relevant content and ads. These are only stored with your consent.

    You can enable or disable optional cookies below. Turning some off may affect how the site works for you.

    Necessary Always Active

    Necessary cookies are needed for core site features, such as secure login and saving your cookie preferences. They do not store personal data.