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RCBO - Residual Current Breaker with Over-Current

RCBOs (Residual Current Breakers with Over-Current) are advanced devices that combine the functionalities of a Residual Current Device (RCD) and a Miniature Circuit Breaker (MCB). They provide comprehensive protection against overcurrent (overload and short circuits) and residual current (earth leakage faults). RCBOs are essential for modern electrical installations across residential, commercial, and industrial settings.

Showing 1–20 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)

FuseBox RTA063230B FuseBox RTA063230B 32A Type A RCBO 30mA 1

FuseBox RTA063230B 32A Type A RCBO 30mA

80 In stock
More available within 1-3 working days*
SKU: RTA063230B
£9.99
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FuseBox RTA060630B FuseBox RTA060630B 6A Type A RCBO 30mA 1

FuseBox RTA060630B 6A Type A RCBO 30mA

42 In stock
More available within 1-3 working days*
SKU: RTA060630B
£9.99
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FuseBox RTA061630B FuseBox RTA061630B 16A Type A RCBO 30mA 1

FuseBox RTA061630B 16A Type A RCBO 30mA

81 In stock
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SKU: RTA061630B
£9.99
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FuseBox RTA062030B FuseBox RTA062030B 20A Type A RCBO 30mA 1

FuseBox RTA062030B 20A Type A RCBO 30mA

134 In stock
More available within 1-3 working days*
SKU: RTA062030B
£9.99
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Live Electrical RA132B-030 Live Electrical 30mA 32A RCBO 10kA Curve B Type A

Live Electrical 30mA 32A RCBO 10kA Curve B Type A

145 In stock
This item cannot be back-ordered
SKU: RA132B-030
£10.99
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Live Electrical RA106B-030 Live Electrical 30mA 6A RCBO 10kA Curve B Type A

Live Electrical 30mA 6A RCBO 10kA Curve B Type A

111 In stock
This item cannot be back-ordered
SKU: RA106B-030
£10.99
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Live Electrical RA116B-030 Live Electrical 30mA 16A RCBO 10kA Curve B Type A

Live Electrical 30mA 16A RCBO 10kA Curve B Type A

115 In stock
This item cannot be back-ordered
SKU: RA116B-030
£10.99
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Hager ADA306G Hager ADA306G RCBO 6 Amp B Type 30mA 6kA 1Hager ADA306G Hager ADA306G RCBO 6 Amp B Type 30mA 6kA 2

Hager ADA306G RCBO 6 Amp B Type 30mA 6kA

37 In stock
More available within 1-3 working days*
SKU: ADA306G
£12.99
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FuseBox RTAMB16 FuseBox RTAMB16 16A Mini Type A RCBO 1FuseBox RTAMB16 FuseBox RTAMB16 16A Mini Type A RCBO 3

FuseBox RTAMB16 16A Mini Type A RCBO

44 In stock
More available within 1-3 working days*
SKU: RTAMB16
£13.50
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WCED Type A Bi-Directional Curve B 32A 30mA RCBO – WRB132B-030 WCED WRB132B-030 WCED Type A Bi-Directional Curve B 32A 30mA RCBO - WRB132B-030 2

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

16 In stock
More available within 1-3 working days*
SKU: WRB132B-030
£9.99

5-£9.49£0.50£9.99
10-£8.99£1.00£9.99
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Hager ADA332G Hager ADA332G RCBO 32 Amp B Type 30mA 6kA

Hager ADA332G RCBO 32 Amp B Type 30mA 6kA

22 In stock
More available within 1-3 working days*
SKU: ADA332G
£12.99
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Live Electrical RA120B-030 Live Electrical 30mA 20A RCBO 10kA Curve B Type A

Live Electrical 30mA 20A RCBO 10kA Curve B Type A

183 In stock
This item cannot be back-ordered
SKU: RA120B-030
£10.99
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WCED Type A Bi-Directional Curve B 6A 30mA RCBO - WRB106B-030

WCED Type A Bi-Directional Curve B 6A 30mA RCBO – WRB106B-030

22 In stock
More available within 1-3 working days*
SKU: WRB106B-030
£9.99

5-£9.49£0.50£9.99
10-£8.99£1.00£9.99
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Live Electrical AMR132B-030 32A RCBO with 30mA Type A protection and bi-directional design for solar and domestic use Live Electrical AMR132B-030 30mA Type A 32A 6kA B Curve Bi-Directional RCBO

Live Electrical AMR132B-030 30mA Type A 32A 6kA B Curve Bi-Directional RCBO

194 In stock
More available within 1-3 working days*
SKU: AMR132B-030
£9.88

10-£8.89£0.99£9.88
20-£8.40£1.48£9.88
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FuseBox RTAMB20 FuseBox RTAMB20 20A Mini Type A RCBO 1

FuseBox RTAMB20 20A Mini Type A RCBO

20 In stock
More available within 1-3 working days*
SKU: RTAMB20
£13.50
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FuseBox RTA064030B FuseBox RTA064030B 40A Type A RCBO 30mA 1

FuseBox RTA064030B 40A Type A RCBO 30mA

91 In stock
More available within 1-3 working days*
SKU: RTA064030B
£9.99
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WCED Type A Bi-Directional Curve B 20A 30mA RCBO – WRB120B-030

WCED Type A Bi-Directional Curve B 20A 30mA RCBO – WRB120B-030

8 In stock
More available within 1-3 working days*
SKU: WRB120B-030
£9.99

5-£9.49£0.50£9.99
10-£8.99£1.00£9.99
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Live Electrical AMR106B-030 30mA Type A 6A 6kA B Curve Bi-Directional RCBO Live Electrical AMR106B-030 30mA Type A 6A 6kA B Curve Bi-Directional RCBO

Live Electrical AMR106B-030 30mA Type A 6A 6kA B Curve Bi-Directional RCBO

181 In stock
More available within 1-3 working days*
SKU: AMR106B-030
£9.88

10-£8.89£0.99£9.88
20-£8.40£1.48£9.88
Add to quote
FuseBox RTA061030B FuseBox RTA061030B 10A Type A RCBO 30mA 1

FuseBox RTA061030B 10A Type A RCBO 30mA

144 In stock
More available within 1-3 working days*
SKU: RTA061030B
£9.99
Add to quote
Live Electrical RA116C-030 Live 30mA 16A RCBO 10kA Curve C Type A 1Live Electrical RA116C-030 Live 30mA 16A RCBO 10kA Curve C Type A 2

Live 30mA 16A RCBO 10kA Curve C Type A

39 In stock
This item cannot be back-ordered
SKU: RA116C-030
£10.99
Add to quote
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Showing 1–20 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.

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