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Circuit Protection

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SPD Surge Protection Devices (107)

Hager KF81A Connection Terminal 1P Prong 1x25mm² - Pack of 1

Hager KF81A Connection Terminal 1P Prong 1x25mm² – Pack of 1

3 In stock
More available within 1-3 working days*
SKU: KF81A
£6.45
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Hager FCDF563U RCCB 1P+N 63A 30mA F Class

Hager CDF563U RCCB 1P+N 63A 30mA F Class

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SKU: CDF563U
£101.05
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Live Electrical 3P+N 16A B Curve 30mA Type A RCBO

Live Electrical 3P+N 16A B Curve 30mA Type A RCBO

4 In stock
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SKU: RTN316B-030N
£79.95
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Live Electrical FMC14M-SP 11 Way Flush SPD Metal Consumer Unit

Live Electrical FMC14M-SP 11 Way Flush SPD Metal Consumer Unit

1 In stock
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SKU: FMC14M-SP
£69.21
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Unicrimp QGT10B Grommet Strip Edge Roll, 5mm x 8mm x 10m in black PVC with steel core, designed to protect cables from sharp edges in electrical installations. Unicrimp QGT10B Grommet Strip Edge Roll, 5mm x 8mm x 10m in black PVC with steel core, designed to protect cables from sharp edges in electrical installations.

Unicrimp QGT10B Grommet Strip Edge Roll – 5mm x 8mm x 10m (Black)

2 In stock
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SKU: QGT10B
£7.90
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Live Electrical LSMC04/100 100A Main Switch 2 Way Consumer Unit

Live Electrical LSMC04/100 100A Main Switch 2 Way Consumer Unit

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SKU: LSMC04/100
£20.62
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Live Electrical LSMC08/100 100A Main Switch 6 Way Consumer Unit

Live Electrical LSMC08/100 100A Main Switch 6 Way Consumer Unit

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SKU: LSMC08/100
£25.63
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Live Electrical LSMC18/100 100A Main Switch 16 Way Consumer Unit

Live Electrical LSMC18/100 100A Main Switch 16 Way Consumer Unit

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SKU: LSMC18/100
£37.50
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Live Electrical LSMC22/100 100A Main Switch 20 Way Consumer Unit

Live Electrical LSMC22/100 100A Main Switch 20 Way Consumer Unit

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SKU: LSMC22/100
£42.40
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WCED WKC332B 10kA 3 Pole MCB Curve B 32A

WCED WKC332B 10kA 3 Pole MCB Curve B 32A

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SKU: WKC332B
£9.95

5-£9.55£0.40£9.95
10-£9.30£0.65£9.95
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WCED WKC332C 10kA 3 Pole MCB Curve C 32A

WCED WKC332C 10kA 3 Pole MCB Curve C 32A

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SKU: WKC332C
£9.95

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WCED WKC106C 10kA 1 Pole MCB Curve C 6A

WCED WKC106C 10kA 1 Pole MCB Curve C 6A

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SKU: WKC106C
£2.65

5-£2.54£0.11£2.65
10-£2.48£0.17£2.65
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Hager CDB563HP 30mA 63A RCCB 1P+N Type B HP for Heat Pumps Hager CDB563HP 30mA 63A RCCB 1P+N Type B HP for Heat Pumps

Hager CDB563HP 30mA 63A RCCB 1P+N Type B HP for Heat Pumps

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SKU: CDB563HP
£189.17
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Live Electrical ENC18-PV4/1 18 Way (8 Fuses) Solar Consumer Unit DC 1000V 4 Input 1 Output

Live Electrical ENC18-PV4/1 18 Way (8 Fuses) Solar Consumer Unit DC 1000V 4 Input 1 Output

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SKU: ENC18-PV4/1
£131.99

2-£123.41£8.58£131.99
3-£116.81£15.18£131.99
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Niglon EDB10D 400A 10-Way Earthing Busbar with Link

Niglon EDB10D 400A 10-Way Earthing Busbar with Link

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SKU: EDB10D
£98.15
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FuseBox SF0100T2 100A Fused Switch with T2 SPD

FuseBox SF0100T2 100A Fused Switch with T2 SPD

18 In stock
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SKU: SF0100T2
£89.70
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Front view of the Gewiss GW70436P 32A 4-pole rotary isolator switch with a red lockable emergency stop knob in a weather-resistant insulating enclosure. Front view of the Gewiss GW70436P 32A 4-pole rotary isolator switch with a red lockable emergency stop knob in a weather-resistant insulating enclosure.

Gewiss GW70436P 32A 4-Pole IP66/IP67/IP69 Rotary Isolator Switch

14 In stock
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SKU: GW70436P
£16.71
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Hager VML118SPDRK 18 Way Consumer Unit Kit with RCBOs, SPD, and Gland – 18th Edition Compliant 18 Way Main Switch SPD Consumer Unit Kit with Round Knockouts

Hager VML118SPDRK/KIT15 18 Way Main Switch SPD Consumer Unit Kit with 15 RCBOs

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SKU: VML118SPDRK/KIT15
£272.04
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Garo GS8EV40CPME EV Consumer Unit with PEN Fault Detection | C40A RCBO Type A + SPD Garo GS8EV40CPME EV Consumer Unit with PEN Fault Detection | C40A RCBO Type A + SPD

Garo GS8EV40CPME EV Consumer Unit with PEN Fault Detection | C40A RCBO Type A + SPD

1 In stock
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SKU: GS8EV40CPME
£115.00
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FuseBox F3007MZ 7 Way RCBO Consumer Unit With SPD F3 Series F3007MZ FuseBox Consumer Unit – Internal View Without Front Cover

FuseBox F3007MZ 7 Way RCBO Consumer Unit With SPD

4 In stock
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SKU: F3007MZ
£55.23
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More products

Showing 861–880 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.

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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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