VAT:
Wishlist 0
Quotes 0
0
Electrical4less Reviews4.9 Based on 1716 reviews
UK Mainland Free Delivery £100 + VAT
30 Day Return Policy
Next Day Delivery Cut Off Time 3PM

Bi-Directional RCBOs

Bi-Directional RCBOs offer protection in both directions of current flow, making them ideal for solar PV systems, battery storage setups, and EV charging installations.

Our selection includes 1-pole, 2-pole, and 3-pole RCBOs for single-phase and three-phase applications, with options in 6kA and 10kA breaking capacities, as well as 30mA and 100mA trip sensitivities.

Choose from trusted brands such as FuseBox, Hager, Live Electrical, Garo, Niglon, and WCED – all compliant with the latest 18th Edition Wiring Regulations to ensure reliable overcurrent and earth leakage protection.

Use the filters to narrow down your selection by brand, pole type, or rating.

For all RCBO models, including standard and bi-directional types, visit our main RCBO category.

Showing 1–20 of 134 results

WCED Type A Bi-Directional Curve B 32A 30mA RCBO - WRB132B-030WCED Type A Bi-Directional Curve B 32A 30mA RCBO - WRB132B-030 2

WCED Type A Bi-Directional Curve B 32A 30mA RCBO – WRB132B-030
7 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WRB132B-030
£10.00
WCED Type A Bi-Directional Curve B 6A 30mA RCBO - WRB106B-030

WCED Type A Bi-Directional Curve B 6A 30mA RCBO – WRB106B-030
6 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WRB106B-030
£10.00
WCED Type A Bi-Directional Curve B 20A 30mA RCBO - WRB120B-030

WCED Type A Bi-Directional Curve B 20A 30mA RCBO – WRB120B-030
10 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WRB120B-030
£10.00
FuseBox RTAMB32BD Bi-Directional RCBO 32AFuseBox | RTAMB32BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 32A

FuseBox | RTAMB32BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 32A
5 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMB32BD
£14.34
WCED Type A Bi-Directional Curve B 16A 30mA RCBO - WRB116B-030

WCED Type A Bi-Directional Curve B 16A 30mA RCBO – WRB116B-030
18 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WRB116B-030
£10.00
FuseBox RTAMB16BD Bi-Directional RCBO 16AFuseBox | RTAMB16BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 16A

FuseBox | RTAMB16BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 16A
16 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMB16BD
£14.34
Live Electrical AMR140B-100 100mA Bi-Directional Type A Compact RCBO 40A B CurveLive Electrical AMR140B-100 100mA Bi-Directional Type A Compact RCBO 40A B Curve 2

Live Electrical | AMR140B-100 | 100mA Bi-Directional Type A Compact RCBO 40A B Curve
7 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: AMR140B-100
£9.99
FuseBox RTAMB20BD Bi-Directional RCBO 20AFuseBox | RTAMB20BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 20A

FuseBox | RTAMB20BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 20A
14 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMB20BD
£14.34
FuseBox RTAMB40BD Bi-Directional RCBO 40AFuseBox | RTAMB40BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 40A

FuseBox | RTAMB40BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 40A
21 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMB40BD
£14.34
FuseBox RTAMC16BD Bi-DirectionalFuseBox | RTAMC16BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 16A

FuseBox | RTAMC16BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 16A
9 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMC16BD
£14.34
FuseBox RTAMC32BD Bi-DirectionalFuseBox | RTAMC32BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 32A

FuseBox | RTAMC32BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 32A
29 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMC32BD
£14.34
Live Electrical RKA132B-030 10kA Type A B Curve Compact 32A Bi-Directional RCBO

Live Electrical | RKA132B-030 | 1P+N | Bi-Directional RCBO | Type A | Curve B | 10kA | 30mA | 32A
2 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: RKA132B-030
£11.59
WCED Type A Bi-Directional Curve B 10A 30mA RCBO - WRB110B-030

WCED Type A Bi-Directional Curve B 10A 30mA RCBO – WRB110B-030
11 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WRB110B-030
£10.00
Live Electrical RNA40C-030 RCBO A Type DP Bi-Directional 40A C Curve 30mA

Live Electrical RNA40C-030 RCBO A Type DP Bi-Directional 40A C Curve 30mA
9 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: RNA40C-030
£10.43
Live Electrical RKA116B-030 10kA Type A B Curve Compact 16A Bi-Directional RCBO

Live Electrical | RKA116B-030 | 1P+N | Bi-Directional RCBO | Type A | Curve B | 10kA | 30mA | 16A
5 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: RKA116B-030
£11.59
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
8 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: RCBO1-6/30SAX2
£12.78
FuseBox RTAMB10BD Bi-Directional RCBO 10AFuseBox | RTAMB10BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 10A

FuseBox | RTAMB10BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 10A
35 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMB10BD
£14.34
FuseBox RTAMC20BD Bi-DirectionalFuseBox | RTAMC20BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 20A

FuseBox | RTAMC20BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 20A
11 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMC20BD
£14.34
FuseBox RTAMC06BD Bi-DirectionalFuseBox | RTAMC06BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 6A

FuseBox | RTAMC06BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 6A
17 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMC06BD
£14.34
FuseBox RTAMC40BD Bi-DirectionalFuseBox | RTAMC40BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 40A

FuseBox | RTAMC40BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 40A
17 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMC40BD
£14.34

Showing 1–20 of 134 results

Understanding Bi-Directional RCBOs

Bi-Directional RCBOs represent a key advancement in circuit protection, offering reliable safety in both directions of current flow. Traditional RCBOs were designed primarily for current moving from the supply to the load, but as modern electrical systems evolved — with energy generation and storage becoming commonplace — this limitation needed to be addressed.

Why Bi-Directional RCBOs Were Introduced

With the rise of solar PV systems, EV chargers, and battery storage, current can flow back toward the supply side under certain conditions.
Standard RCBOs may not detect faults accurately in these situations, which led to the development of bidirectional designs — devices that sense and interrupt earth leakage and overcurrent faults regardless of current direction.

This makes them ideal for use in:

  • EV charging installations
  • Solar and battery hybrid systems
  • Smart homes with distributed power sources.

 

Compliance and BS 7671 Requirements

The 18th Edition Wiring Regulations (BS 7671) emphasise the importance of using suitable protective devices for circuits where current flow may reverse.
Bi-Directional RCBOs help ensure compliance with these standards, reducing the risk of faults in renewable and energy-efficient systems.

Their dual-direction sensing technology ensures protection for both installers and end users, helping future-proof electrical installations in line with Part 7: Section 722 (Electric Vehicle Charging Installations) and Regulation 712.411.3.2.1.1 (Solar PV Systems).

 

Frequently Asked Questions

What makes an RCBO bi-directional?

A bi-directional RCBO can detect and interrupt residual current faults in both directions of current flow — from supply to load and load to supply. This is vital in systems where current may reverse, such as solar PV or battery storage setups.

Do I need a bi-directional RCBO for my EV charger?

Yes, in most cases. BS 7671 (18th Edition) recommends using bi-directional protection for circuits that can export energy back into the system, which applies to many EV charging and renewable energy applications. It ensures the installation remains safe and compliant.

Are bi-directional RCBOs interchangeable with standard RCBOs?

Physically, they fit the same consumer units, but not all systems require them. Standard RCBOs protect only one direction of current flow, while bi-directional versions are designed for bidirectional power environments. Always check your manufacturer’s instructions and regulation requirements before replacing.






© 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 £200 + VAT (double our standard carriage-paid order value of £100 + 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 £100 + VAT:
Orders above £100 + 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 £200 + 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 £200 + 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.

Supplier Lead Time & Availability

This item may be sourced from our supplier before dispatch.
The lead time shown is an estimate only and is based on the usual supplier timeframe. It is subject to supplier availability and is not a guaranteed delivery date.
We do not have a live supplier stock feed, so supplier stock can change without notice.
Delivery timers and courier estimates apply once the item is available for dispatch.
If the item is unavailable, we will contact you with the available options, including waiting for stock, choosing an alternative product, cancellation, or a refund for the unavailable item.
This does not affect your statutory rights.

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.

Ordering this product

To purchase this catalogue item, start by adding it to your quote list. Submit your enquiry with the quantity you require, and our team will help you complete your order.

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.
Delivery info

Where an order contains only WCED products that are not available from our shelf stock, it will usually be dispatched directly from WCED. Delivery often takes 1–2 working days, although stock availability, order cut-off times and courier schedules may affect the timing.

For mixed orders containing products from other suppliers, the dispatch arrangement and delivery time may vary, and the order may follow the longest lead time shown.

Delivery info

If this item is not currently on our shelves, we will order it from FuseBox for delivery to our warehouse. FuseBox does not dispatch directly to our customers, so once the item arrives with us, we will send it on to you as quickly as possible. Many items reach us the next working day, while some may take a little longer. Delivery to you is usually completed within 2–4 working days.

Please note that if your order includes other products with a longer lead time, the complete order may be dispatched once all items are available.

In the unlikely event that an item becomes unavailable, we will contact you with the available options, which may include waiting for stock, choosing an alternative product or cancelling the unavailable item for a refund.

Delivery info

Orders containing only Live Electrical products that are not available from our shelf stock will usually be dispatched directly from Live Electrical. Delivery is generally completed within 2–3 working days, although stock availability, order cut-off times and courier schedules may affect the timing.

For mixed orders containing products from other suppliers, dispatch arrangements may vary, and the order may follow the longest delivery estimate shown.

In the unlikely event that an item becomes unavailable, we will contact you with the available options, which may include waiting for stock, choosing an alternative product or cancelling the unavailable item for a refund.

Delivery info

If this item is not currently available from our shelf stock, we will order it directly from Niglon and dispatch it as soon as it arrives with us. Delivery is usually completed within 2–3 working days.

Please note that if your order includes other products with a longer lead time, the complete order may be dispatched once all items are available.

In the unlikely event that an item becomes unavailable, we will contact you with the available options, which may include waiting for stock, choosing an alternative product or cancelling the unavailable item for a refund.

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.