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Circuit Protection

Circuit protection devices are essential for ensuring the safety and reliability of electrical systems in both residential and commercial settings. These devices prevent damage to electrical circuits by interrupting the flow of excessive current or voltage, thereby protecting equipment and reducing the risk of fire.

Showing 1–20 of 1808 results

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SPD Surge Protection Devices

SPD Surge Protection Devices (107)

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

FuseBox RTA063230B 30mA Curve B 32A Type A RCBO

115 In stock
More available within 1-3 working days*
SKU: RTA063230B
£9.99
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WCED WEC440SP Meter Supply Isolator with Surge Protection WCED WEC440SP Meter Supply Isolator with Surge Protection

WCED WEC440SP Meter Supply Isolator with Surge Protection

425 In stock
More available within 1-3 working days*
SKU: WEC440SP
£29.99

34£28.49£1.50£29.99
59£26.99£3.00£29.99
1019£25.49£4.50£29.99
2099£24.74£5.25£29.99
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FuseBox RTA060630B FuseBox RTA060630B 6A Type A RCBO 30mA 1

FuseBox RTA060630B 30mA Curve B 6A Type A RCBO

76 In stock
More available within 1-3 working days*
SKU: RTA060630B
£9.99
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FuseBox ADRB Fusebox ADRB Din Rail Mounted Blank 1

Fusebox ADRB Din Rail Mounted Blank

445 In stock
More available within 1-3 working days*
SKU: ADRB
£1.28
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FuseBox RTA061630B FuseBox RTA061630B 16A Type A RCBO 30mA 1

FuseBox RTA061630B 30mA Curve B 16A Type A RCBO

72 In stock
More available within 1-3 working days*
SKU: RTA061630B
£9.99
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EV Consumer Unit with A Type DP C40 RCBO and SPD EV Consumer Unit with A Type DP C40 RCBO and SPD

EV Consumer Unit with A Type DP C40 RCBO and SPD

Delivery usually within 1-3 working days*
SKU: WMRC40CSP
£32.99

3-£32.33£0.66£32.99
5-£31.75£1.24£32.99
10-£30.52£2.47£32.99
20-£28.87£4.12£32.99
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Plastic Blank PCUBLANK for Live Electrical Consumer Units and Live Electrical TPN Distribution Board

Plastic Blank PCUBLANK for Live Electrical Consumer Units and Live Electrical TPN Distribution Board

504 In stock
More available within 1-3 working days*
SKU: PCUBLANK
£1.05
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EV Consumer Unit with A Type DP B40 RCBO and SPD EV Consumer Unit with A Type DP B40 RCBO and SPD

EV Consumer Unit with A Type DP B40 RCBO and SPD

Delivery usually within 1-3 working days*
SKU: WMRC40BSP
£32.99

3-£32.33£0.66£32.99
5-£31.75£1.24£32.99
10-£30.52£2.47£32.99
20-£28.87£4.12£32.99
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Live Electrical MCUBLANK Metal Blank MCUBLANK for Metal Consumer Unit and TPN Boards

Metal Blank MCUBLANK for Metal Consumer Unit and TPN Boards

3 In stock
More available within 1-3 working days*
SKU: MCUBLANK
£0.40
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FuseBox RTA062030B FuseBox RTA062030B 20A Type A RCBO 30mA 1

FuseBox RTA062030B 30mA Curve B 20A Type A RCBO

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

Live Electrical 10kA RCBO 32A Curve B Type A 30mA 1P+N

101 In stock
More available within 1-3 working days*
SKU: RA132B-030
£10.99
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WCED MEBLANK WCED Metal Blank for Consumer Unit

WCED Metal Blank for Consumer Unit

500 In stock
More available within 1-3 working days*
SKU: MEBLANK
£0.45
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Live Electrical 10kA RCBO 6A Curve B Type A 30mA 1P+N

Live Electrical 10kA RCBO 6A Curve B Type A 30mA 1P+N

78 In stock
More available within 1-3 working days*
SKU: RA106B-030
£10.99
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EV Consumer Unit with A Type DP C32 RCBO and SPD EV Consumer Unit with A Type DP C32 RCBO and SPD

EV Consumer Unit with A Type DP C32 RCBO and SPD

Delivery usually within 1-3 working days*
SKU: WMRC32CSP
£32.99

3-£32.33£0.66£32.99
5-£31.75£1.24£32.99
10-£30.52£2.47£32.99
20-£28.87£4.12£32.99
Add to quote
Live Electrical 10kA RCBO 16A Curve B Type A 30mA 1P+N

Live Electrical 10kA RCBO 16A Curve B Type A 30mA 1P+N

97 In stock
More available within 1-3 working days*
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

15 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

33 In stock
More available within 1-3 working days*
SKU: RTAMB16
£13.50
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Live Electrical LFIS100 Live Electrical Switchfuse With 80A and 100A Fuse Plus Shroud LFIS100 1Live Electrical LFIS100 Live Electrical Switchfuse With 80A and 100A Fuse Plus Shroud LFIS100 2

Live Electrical Switchfuse With 80A and 100A Fuse Plus Shroud LFIS100

47 In stock
More available within 1-3 working days*
SKU: LFIS100
£12.00

10-£11.52£0.48£12.00
20-£11.22£0.78£12.00
40-£10.92£1.08£12.00
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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

Delivery usually within 1-3 working days*
SKU: WRB132B-030
£9.99
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EV Consumer Unit with A Type DP B32 RCBO and SPD EV Consumer Unit with A Type DP B32 RCBO and SPD

EV Consumer Unit with A Type DP B32 RCBO and SPD

Delivery usually within 1-3 working days*
SKU: WMRC32BSP
£32.99

3-£32.33£0.66£32.99
5-£31.75£1.24£32.99
10-£30.52£2.47£32.99
20-£28.87£4.12£32.99
Add to quote
More products

Showing 1–20 of 1808 results

Selection of Consumer Units, TPN Distribution Boards, Circuit Protection, Rotary Isolators, Meter Tails, Fused Switches and Accessories.

18th Edition Consumer Units with built in SPD Surge Protection Device, stand alone SPD units, PEN loss, PME fault detection consumer units, Consumer units relocation boxes/kits, Three phase distribution boards with built in SPD and main switch.

Thousands of products in stock ready for next day delivery. Friendly and reliable service, competitive prices.

Circuit protection in the UK is governed by the wiring regulations outlined in the British Standard BS 7671. This standard, also known as the IET Wiring Regulations, sets out the requirements for the design, installation, and maintenance of electrical installations in the UK. Circuit protection is a crucial aspect of electrical installations to ensure the safety of people and property.

Here are some key aspects of circuit protection according to BS 7671 and the devices commonly used in the UK market:

  1. Circuit Breakers: Circuit breakers are essential devices for protecting electrical circuits. BS 7671 specifies requirements for the selection and installation of circuit breakers. They come in various types, including:
    • Miniature Circuit Breakers (MCBs): MCBs are commonly used to protect individual circuits. They trip when there’s an overload or a short circuit.
    • Residual Current Devices (RCDs): RCDs are designed to protect against electric shock. They disconnect the circuit if they detect an imbalance in current, indicating a fault.
    • Combination RCD/MCB Devices: These devices combine the functions of both MCBs and RCDs in a single unit. They are often used for socket outlets.
  2. Fuses: While less common in modern installations, fuses may still be used for circuit protection. They work by melting when there’s an excess current, breaking the circuit.
  3. Overcurrent Protection: BS 7671 requires that circuits are protected against overcurrents. This is typically achieved through the use of circuit breakers, fuses, or other protective devices.
  4. Earthing and Bonding: Proper earthing and bonding are essential for safety. This ensures that in the event of a fault, the fault current is safely directed away from people and property.
  5. Surge Protection: Surge protection devices may be required to protect against voltage surges or lightning strikes, especially for sensitive electronic equipment.
  6. Arc Fault Detection: In certain installations, arc fault detection devices may be used to detect and disconnect circuits in the presence of dangerous arc faults.
  7. Circuit Isolation: BS 7671 also specifies requirements for circuit isolation devices such as switches and isolators.
  8. Cable Sizing: The standard provides guidelines for selecting the correct cable size to ensure that the cables can safely carry the intended load without overheating.
  9. Circuit Labels and Documentation: Proper labeling and documentation of circuits are important for maintenance and safety. BS 7671 outlines requirements for labeling and record-keeping.

It’s important to note that regulations and standards may be updated over time, so it’s essential to consult the latest version of BS 7671 and any local regulations or codes that may apply to your specific location or type of installation. Additionally, electrical work should be carried out by qualified and competent electricians to ensure compliance with safety standards.

 

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