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Bi-Directional RCBOs

Showing 61–80 of 134 results

Niglon PRCBO10C1-50 1P + Neutral 50A Curve C Bi-Directional 10kA RCBO

3 In Stock
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Usually 2 - 3 Working Days
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SKU: PRCBO10C1-50
£19.21

Niglon PRCBO10D1-20 1P + Neutral 20A Curve D Bi-Directional 10kA RCBO

1 In Stock
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Usually 2 - 3 Working Days
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SKU: PRCBO10D1-20
£19.21

Garo DCBO1MB32 32A Curve B 1 Module 2 Pole Type A Bi-Directional RCBO

2 In Stock
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Usually 2 - 3 Working Days
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SKU: DCBO1MB32
£19.99

Garo DCBOGRB40-BI 30mA Bi-Directional Type A Compact RCBO 40A B Curve

3 In Stock
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Usually 2 - 3 Working Days
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SKU: DCBOGRB40-BI
£14.99

Niglon PRCBO10B1-20 1P + Neutral 20A Curve B Bi-Directional 10kA RCBO

2 In Stock
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Usually 2 - 3 Working Days
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SKU: PRCBO10B1-20
£19.21

Niglon PRCBO10B1-25 1P + Neutral 25A Curve B Bi-Directional 10kA RCBO

5 In Stock
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Usually 2 - 3 Working Days
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SKU: PRCBO10B1-25
£19.21

Garo DCBO1MB16 16A Curve B 1 Module 2 Pole Type A Bi-Directional RCBO

5 In Stock
More available within:
Usually 2 - 3 Working Days
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SKU: DCBO1MB16
£19.99

Garo DCBO1MB25 25A Curve B 1 Module 2 Pole Type A Bi-Directional RCBO

1 In Stock
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Usually 2 - 3 Working Days
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SKU: DCBO1MB25
£19.99

Hager | ADB910R | 1P+N | 6kA | 30mA | B Curve | Type A Bidirectional RCBO | 10A

4 In Stock
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Usually 2 - 4 Working Days
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SKU: ADB910R
£13.55

Garo DCBOGRB06-BI 30mA Bi-Directional Type A Compact RCBO 6A B Curve

2 In Stock
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Usually 2 - 3 Working Days
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SKU: DCBOGRB06-BI
£14.99

WCED | WRB140B-030 | Type A Bi-Directional RCBO | 6kA | 30mA | B Curve | 40A

Available to Order
Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WRB140B-030
£10.00

Live Electrical | RKA116C-030 | 1P+N | Bi-Directional RCBO | Type A | Curve C | 10kA | 30mA | 16A

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: RKA116C-030
£11.59

Live Electrical RNA16C-030 RCBO A Type DP Bi-Directional 16A C Curve 30mA

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: RNA16C-030
£10.43

Live Electrical | RKA106C-030 | 1P+N | Bi-Directional RCBO | Type A | Curve C | 10kA | 30mA | 6A

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: RKA106C-030
£11.59

WCED | WRT332C-030 | 32A C Curve | 10kA | 3 Pole A-Type Bi-Directional RCBO

Available to Order
Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WRT332C-030
£57.26

Live Electrical RNA10C-030 RCBO A Type DP Bi-Directional 10A C Curve 30mA

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: RNA10C-030
£10.43

Live Electrical RNA6B-030 RCBO A Type DP Bi-Directional 6A B Curve 30mA

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: RNA6B-030
£10.43

WCED | WRT340C-030 | 40A C Curve | 10kA | 3 Pole A-Type Bi-Directional RCBO

Available to Order
Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WRT340C-030
£57.26

Live Electrical RNA20B-030 RCBO A Type DP Bi-Directional 20A B Curve 30mA

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: RNA20B-030
£10.43

Live Electrical RNA6C-030 RCBO A Type DP Bi-Directional 6A C Curve 30mA

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: RNA6C-030
£10.43

Showing 61–80 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.