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RCBO - Residual Current Breakers with Over-Current

Shop a wide range of RCBOs, also known as Residual Current Breakers with Overcurrent protection, from leading brands including Hager, FuseBox, Live Electrical, Garo, WCED and Niglon. RCBOs combine overload, short-circuit and residual current protection in one device, making them a common choice for individual circuit protection in modern electrical installations. Our range includes 6kA and 10kA options, Type B and Type C curves, and current ratings from 6A to 50A. If you are also choosing a board, browse our main consumer units category and always check compatibility with the board, busbar system and manufacturer requirements before installation.

Showing 1–20 of 395 results

FuseBox RTA063230B 30mA Curve B 32A Type A RCBO

FuseBox | RTA063230B | 6kA | 30mA | Curve B | Type A RCBO | 32A
92 In Stock
More available within:
Usually 2 - 4 Working Days
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SKU: RTA063230B
£9.99
FuseBox RTA060630B 30mA Curve B 6A Type A RCBO

FuseBox | RTA060630B | 6kA | 30mA | Curve B | Type A RCBO | 6A
126 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTA060630B
£9.99
FuseBox RTA061630B 30mA Curve B 16A Type A RCBO

FuseBox | RTA061630B | 6kA | 30mA | Curve B | Type A RCBO | 16A
114 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTA061630B
£9.99
FuseBox RTA062030B 30mA Curve B 20A Type A RCBO

FuseBox | RTA062030B | 6kA | 30mA | Curve B | Type A RCBO | 20A
131 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTA062030B
£9.99
Live Electrical AMR132B-030 30mA Type A 32A 6kA B Curve Bi-Directional RCBOLive Electrical AMR132B-030 30mA Type A 32A 6kA B Curve Bi-Directional RCBO 2

Live Electrical | AMR132B-030 | 6kA 30mA | Type A B Curve | Bi-Directional RCBO | 32A
76 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: AMR132B-030
£8.22
Live Electrical AMR106B-030 30mA Type A 6A 6kA B Curve Bi-Directional RCBOLive Electrical AMR106B-030 30mA Type A 6A 6kA B Curve Bi-Directional RCBO 2

Live Electrical | AMR106B-030 | 6kA 30mA | Type A B Curve | Bi-Directional RCBO | 6A
64 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: AMR106B-030
£8.22
Live Electrical 10kA RCBO 32A Curve B Type A 30mA 1P+N

Live Electrical 10kA RCBO 32A Curve B Type A 30mA 1P+N
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
Read More
SKU: RA132B-030
£10.99
Live Electrical 10kA RCBO 6A Curve B Type A 30mA 1P+N

Live Electrical 10kA RCBO 6A Curve B Type A 30mA 1P+N
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
Read More
SKU: RA106B-030
£10.99
Live Electrical 10kA RCBO 16A Curve B Type A 30mA 1P+N

Live Electrical 10kA RCBO 16A Curve B Type A 30mA 1P+N
3 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: RA116B-030
£10.99
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
6 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WRB132B-030
£10.00
Live Electrical AMR116B-030 30mA Type A 16A 6kA B Curve Bi-Directional RCBOLive Electrical AMR116B-030 30mA Type A 16A 6kA B Curve Bi-Directional RCBO 2

Live Electrical | AMR116B-030 | 6kA 30mA | Type A B Curve | Bi-Directional RCBO | 16A
133 In Stock
More available within:
Usually 2 - 3 Working Days
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SKU: AMR116B-030
£8.22
WCED Type A Bi-Directional Curve B 6A 30mA RCBO - WRB106B-030

WCED Type A Bi-Directional Curve B 6A 30mA RCBO – WRB106B-030
24 In Stock
More available within:
Usually 1 - 2 Working Days
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SKU: WRB106B-030
£10.00
Live Electrical 10kA RCBO 20A Curve B Type A 30mA 1P+N

Live Electrical 10kA RCBO 20A Curve B Type A 30mA 1P+N
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
Read More
SKU: RA120B-030
£10.99
WCED Type A Bi-Directional Curve B 20A 30mA RCBO - WRB120B-030

WCED Type A Bi-Directional Curve B 20A 30mA RCBO – WRB120B-030
11 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WRB120B-030
£10.00
Live Electrical AMR120B-030 30mA Type A 20A 6kA B Curve Bi-Directional RCBOLive Electrical AMR120B-030 30mA Type A 20A 6kA B Curve Bi-Directional RCBO 2

Live Electrical | AMR120B-030 | 6kA 30mA | Type A B Curve | Bi-Directional RCBO | 20A
78 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: AMR120B-030
£8.22
FuseBox RTA064030B 30mA Curve B 40A Type A RCBO

FuseBox | RTA064030B | 6kA | 30mA | Curve B | Type A RCBO | 40A
264 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTA064030B
£9.99
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
25 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMB32BD
£14.34
FuseBox RTA061030B 30mA Curve B 10A Type A RCBO

FuseBox | RTA061030B | 6kA | 30mA | Curve B | Type A RCBO | 10A
132 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTA061030B
£9.99
WCED Type A Bi-Directional Curve B 16A 30mA RCBO - WRB116B-030

WCED Type A Bi-Directional Curve B 16A 30mA RCBO – WRB116B-030
4 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WRB116B-030
£10.00
FuseBox RTAMB06BD Bi-Directional RCBO 6AFuseBox | RTAMB06BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 6A

FuseBox | RTAMB06BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 6A
16 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: RTAMB06BD
£14.34

Showing 1–20 of 395 results

RCBOs for Consumer Units and Distribution Boards

RCBOs are used to provide circuit protection for individual circuits within consumer units and distribution boards. They combine overcurrent protection with residual current protection, helping protect against overloads, short circuits and earth leakage faults from a single device.

When selecting an RCBO, it is important to check the brand, board compatibility, breaking capacity, tripping curve, current rating, device type and terminal arrangement. RCBOs are not usually interchangeable between different consumer unit ranges, so compatibility should always be checked against the manufacturer’s instructions before installation.

Key Types of RCBOs

Single Pole RCBOs

Single pole RCBOs are commonly used for individual final circuits such as lighting, socket circuits and smaller domestic loads. They are often used in residential consumer units where each circuit requires separate residual current and overcurrent protection.

Double Pole RCBOs

Double pole RCBOs disconnect both live and neutral conductors. They are commonly used where full circuit isolation is required, subject to the installation design and manufacturer requirements.

Three Pole and Four Pole RCBOs

Three pole and four pole RCBOs are used for three-phase installations, including commercial and industrial systems where suitable residual current and overcurrent protection is required.

Bi-Directional RCBOs

Bi-directional RCBOs are designed for circuits where current may flow in either direction. They are often selected for modern installations involving equipment such as solar PV, battery storage or EV charging, where specified by the system design and manufacturer guidance.

Type A RCBOs

Type A RCBOs detect AC residual currents and pulsating DC residual currents. They are commonly used in modern installations with electronic equipment such as LED lighting, computers, appliances with electronic controls and EV-related equipment where required by the installation design.

Type AC RCBOs detect AC residual currents only. The correct RCD/RCBO type should always be selected in line with current wiring regulations, the connected equipment and the manufacturer’s instructions.

RCBO Tripping Curves

  • Type B curve – commonly used for domestic and light commercial circuits with lower inrush currents.
  • Type C curve – commonly used for circuits with higher inrush currents, such as certain lighting, motor or commercial loads.

Choosing the Right RCBO

Before ordering an RCBO, check the technical requirements of the installation and confirm compatibility with the consumer unit or distribution board. Important details include:

  • Brand and board compatibility
  • Current rating, such as 6A, 16A, 20A, 32A, 40A or 50A
  • Breaking capacity, such as 6kA or 10kA
  • Tripping curve, usually Type B or Type C
  • RCD type, such as Type A
  • Single pole, double pole or three-phase format
  • Terminal position and busbar compatibility

Related Consumer Units

If you are also choosing the enclosure or distribution board, browse our main consumer units category. Always check that the RCBO is suitable for the selected consumer unit range, busbar system and manufacturer requirements.

RCBO FAQs

What does an RCBO do?

An RCBO combines residual current protection and overcurrent protection in one device. It helps protect a circuit against earth leakage faults, overloads and short circuits.

Can I fit any RCBO into any consumer unit?

No. RCBOs should be compatible with the specific consumer unit or distribution board range. Always check the manufacturer’s compatibility information before installation.

What is the difference between Type B and Type C RCBOs?

Type B and Type C refer to the tripping curve. Type B RCBOs are commonly used for circuits with lower inrush currents, while Type C RCBOs are used where higher inrush currents may be expected.

What is a Type A RCBO?

A Type A RCBO detects AC residual current and pulsating DC residual current. It is commonly specified for many modern circuits with electronic equipment.

Who should install an RCBO?

RCBOs should be selected and installed by a qualified electrician who can confirm the correct rating, type, compatibility and installation requirements.






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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.

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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

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.

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