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Circuit Protection

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SPD Surge Protection Devices

SPD Surge Protection Devices (107)

Surge Devices SY12325KA2P/ENCM Surge Devices Type 1+2+3 25kA Single Phase Lightning and Surge Arrester

Surge Devices SY12325KA2P/ENCM Type 1+2+3 SPD – 25kA Single Phase Lightning Arrester with MCB in IP65 Enclosure

Delivery usually within 1-3 working days*
SKU: SY12325KA2P/ENCM
£180.00
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Surge Devices SY2-C40XENC Surge Devices Type 2 20kA/40kA 3 Phase SPD with Window Indication in IP65 Polycarbonate Enclosure

Surge Devices SY3-C40X/ENC Three Phase Surge Protection Device – Type 2+3 SPD in IP65 Enclosure

Delivery usually within 1-3 working days*
SKU: SY2-C40XENC
£162.00
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Surge Devices SY2-C40XENCM Surge Devices Type 2 20kA/40kA 3 Phase SPD with Window Indication & 3P 32A MCB in IP65 Polycarbonate Enclosure

Surge Devices SY3-C40X/ENCM Three Phase Type 2+3 SPD in Enclosure with MCB

Delivery usually within 1-3 working days*
SKU: SY2-C40XENCM
£183.00
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Surge Devices 320002/ENC Surge Devices Type 2 Single Module 2P SPD with Replaceable Modules

Surge Devices 320002/ENC Type 2/3 SPD in IP65 Enclosure

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SKU: 320002/ENC
£50.05
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Surge Devices LSPDPV600 SPD Type 1 & 2 600V DC for Solar/PV Installations

Surge Devices LSPDPV600 Type 1+2 PV SPD for 600V Solar Installations

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SKU: LSPDPV600
£96.00

2-£94.08£1.92£96.00
3-£93.12£2.88£96.00
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Hager VML11214SPD Hager VML11214SPD Dual Row 12+14 Way 100A Main Switch + SPD

Hager VML11214SPD Dual Row 12+14 Way 100A Main Switch + SPD

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SKU: VML11214SPD
£215.73
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Hager ECR140D Hager 1 Phase kWhmeter Direct 40A 1M MODBUS MID

Hager ECR140D 1 Phase kWh Meter Direct 40A 1M MODBUS MID

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SKU: ECR140D
£111.66
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Hager ADC925R Hager 30mA Type A 25A 6kA C Curve 1M 1P+N Bi-Directional RCBO

Hager ADC925R 30mA Type A 25A 6kA C Curve 1M 1P+N Bi-Directional RCBO

4 In stock
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SKU: ADC925R
£19.43
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WCED WMTP28-WER40CSP PEN Loss Consumer Unit with 6 x RCBOs & SPD 2

PEN Loss Consumer Unit with 6 x RCBOs & SPD

Out of stock
This item cannot be back-ordered
SKU: WMTP28-WER40CSP
£296.40
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G-ProKit COMPAC-MET-100A-1PH-BI G-ProBox 100A Bi-Directional Single-Phase Modbus Compact Check Meter

G-ProBox COMPAC-MET-100A-1PH-BI 100A Bi-Directional Single-Phase Modbus Compact Check Meter

9 In stock
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SKU: COMPAC-MET-100A-1PH-BI
£35.03

2-£34.33£0.70£35.03
3-£33.63£1.40£35.03
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Hager ADB410U Hager ADB410U RCBO 10kA B-10A 30mA Type A

Hager ADB410U RCBO 10kA B-10A 30mA Type A

7 In stock
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SKU: ADB410U
£35.76
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Hager ADC406U Hager ADC406U RCBO 10kA C-6A 30mA Type A

Hager ADC406U RCBO 10kA C-6A 30mA Type A

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SKU: ADC406U
£35.76
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Hager ADC410U Hager ADC410U RCBO 10kA C-10A 30mA Type A

Hager ADC410U RCBO 10kA C-10A 30mA Type A

4 In stock
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SKU: ADC410U
£35.76
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Hager ADA145U Type A RCBO

Hager ADA145U RCBO 10kA B-45A 30mA Type A

1 In stock
This item cannot be back-ordered
SKU: ADA145U
£30.99
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Hager JK112BG Hager JK112BG 125A 12 Way TPN Board Glazed Door

Hager JK112BG 125A 12 Way TPN Board Glazed Door

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SKU: JK112BG
£188.33
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Hager JK106BG 125A 6 Way TPN Board Glazed Door

Hager JK106BG 125A 6 Way TPN Board Glazed Door

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SKU: JK106BG
£140.23
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Live Electrical LSGU40616 Live Electrical LSGU40616 Garage 40A RCD Consumer Unit with 6A&16A MCBs 1Live Electrical LSGU40616 Live Electrical LSGU40616 Garage 40A RCD Consumer Unit with 6A&16A MCBs 2

Live Electrical LSGU40616 Garage 40A RCD Consumer Unit with 6A&16A MCBs

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SKU: LSGU40616
£32.84
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Live Electrical LSGU63620 Live Electrical LSGU63620 Garage 63A RCD Consumer Unit with 6A&20A MCBs

Live Electrical LSGU63620 Garage 63A RCD Consumer Unit with 6A&20A MCBs

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SKU: LSGU63620
£32.84
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Live Electrical AGU5-SR/G IP65 Metal SPD 2 Way Garage/EV Unit with 40A RCBO - Grey Live Electrical AGU5-SR/G IP65 Metal SPD 2 Way Garage/EV Unit with 40A RCBO - Grey

Live Electrical AGU5-SR/G IP65 Metal SPD 2 Way Garage/EV Unit with 40A RCBO – Grey

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SKU: AGU5-SR/G
£52.92

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5-£50.27£2.65£52.92
10-£48.95£3.97£52.92
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Live Electrical AGU5-SRTC/G IP65 Metal EV Consumer Unit with C40A DP RCBO - Grey

Live Electrical AGU5-SRTC/G IP65 Metal EV Consumer Unit with C40A DP RCBO – Grey

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SKU: AGU5-SRTC/G
£53.86

3-£52.51£1.35£53.86
5-£51.17£2.69£53.86
10-£49.82£4.04£53.86
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Showing 961–980 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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