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Circuit Protection

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SPD Surge Protection Devices

SPD Surge Protection Devices (109)

FuseBox AFMF28 28P Flush Fit Frame

FuseBox AFMF28 28P Flush Fit Frame

Delivery usually within 1-3 working days*
SKU: AFMF28
£23.09
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Live Electrical PEN4-SNR DP 40A C Curve RCBO with SPD

Live Electrical PEN4-SNR DP 40A C Curve RCBO with SPD

Delivery usually within 1-3 working days*
SKU: PEN4-SNR
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Live Electrical PEN4-SNR c/w Double Pole 40A B Curve RCBO with Type 2 SPD

Live Electrical PEN4-SNR DP 40A B Curve RCBO with SPD

Delivery usually within 1-3 working days*
SKU: PEN4-SNR/40B
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Live Electrical PEN4-SNR/32B c/w Double Pole 32A B Curve RCBO with Type 2 SPD

Live Electrical PEN4-SNR DP 32A B Curve RCBO with SPD

Delivery usually within 1-3 working days*
SKU: PEN4-SNR/32B
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Live Electrical PEN4-SNR/32C c/w Double Pole 32A C Curve RCBO with Type 2 SPD

Live Electrical PEN4-SNR DP 32A C Curve RCBO with SPD

Delivery usually within 1-3 working days*
SKU: PEN4-SNR/32C
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WSRC532BSP Single Phase Electric Meter in Metal Enclosure WSRC532BSP Single Phase Electric Meter in Metal Enclosure

100A DP Main Switch with SPD and Electric Meter

Delivery usually within 1-3 working days*
SKU: WSRC532BSP

3-£0.00£0.00£0.00
5-£0.00£0.00£0.00
10-£0.00£0.00£0.00
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WARD3100C 100A Single Phase Automatic Reset Device with PME Fault Protection

WARD3100C 100A Single Phase Automatic Reset Device with PME Fault Protection

Out of stock
This item cannot be back-ordered
SKU: WARD3100C
£15.20
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WCED WT1M Rail Mounted Digital Timer

WCED WT1M Rail Mounted Digital Timer

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SKU: WT1M
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DDS353 45A Direct Connected MID Certified kWh Meter

DDS353 45A Direct Connected MID Certified kWh Meter

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SKU: DDS353
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FuseBox Bi-Directional Mini RCBO 06A C Curve 30mA Type A - Compact and Reliable Protection

FuseBox Bi-Directional Mini RCBO 06A C Curve 30mA Type A

35 In stock
More available within 1-3 working days*
SKU: RTAMC06BD
£16.95
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FuseBox Bi-Directional Mini RCBO 06A C Curve 30mA Type A - Compact and Reliable Protection

FuseBox Bi-Directional Mini RCBO 10A C Curve 30mA Type A

30 In stock
More available within 1-3 working days*
SKU: RTAMC10BD
£16.95
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Whitecliffe Electrical DDS353F+R+I 45A Bi-Directional kWh Meter

Whitecliffe Electrical DDS353F+R+I 45A Bi-Directional kWh Meter

Delivery usually within 1-3 working days*
SKU: DDS353F+R+I
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WARD5100C 5 Pole 100A Auto Reset Device with PME Fault Protection

WARD5100C 5 Pole 100A Auto Reset Device with PME Fault Protection

Out of stock
This item cannot be back-ordered
SKU: WARD340C-1
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Hager VM108KSPD Design 30 8 Way SPD Consumer Unit

Hager VM108KSPD 8 Way Design 30 SPD Consumer Unit

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SKU: VM108KSPD
£162.42
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Hager VM112KSPD 12 Way Design 30 SPD Consumer Unit

Hager VM112KSPD 12 Way Design 30 SPD Consumer Unit

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SKU: VM112KSPD
£168.98
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Hager VM10810KSPD 18 Way Design 30 SPD Consumer Unit

Hager VM10810KSPD 8+10 Way Design 30 SPD Consumer Unit

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SKU: VM10810KSPD
£241.45
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Hager VM11820KSPD 18+20 Way Design 30 SPD Consumer Unit

Hager VM11820KSPD 18+20 Way Design 30 SPD Consumer Unit

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SKU: VM11820KSPD
£269.54
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Hager VR440EV 6 Way EV Consumer Unit

Hager VR440EV 4 Way EV Consumer Unit

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SKU: VR440EV
£51.56
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Hager VA4T2SDSPD Type 2 Surge Protection Metal Enclosure with 100A Main Switch

Hager VA4T2SDSPD Type 2 Surge Protection Metal Enclosure with 100A Main Switch

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SKU: VA4T2SDSPD
£151.60
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Hager VA4T2SDSPD Type 2 Surge Protection Metal Enclosure c/w Doors and 100A Main Switch

Hager VA4T2SDSPDD Type 2 Surge Protection Metal Enclosure c/w Doors and 100A Main Switch

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SKU: VA4T2SDSPDD
£166.75
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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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