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Circuit Protection

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SPD Surge Protection Devices

SPD Surge Protection Devices (109)

FuseBox AFMF14 Fusebox AFMF14 14 Module Flush Mounting Frame Kit 1

Fusebox AFMF14 14 Module Flush Mounting Frame Kit

4 In stock
More available within 1-3 working days*
SKU: AFMF14
£17.00
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Live Electrical EN5040/200 IP65 Metal Enclosure, 500x400x200mm, steel construction with RAL7035 epoxy powder coat, includes galvanised mounting plate and polyurethane foamed gasket for watertight sealing.Live Electrical EN5040/200 Live Electrical Metal Enclosure IP65 H:500 x W:400 x D:200mm 2

Live Electrical EN5040/200 IP65 Metal Enclosure H:500 x W:400 x D:200mm

Delivery usually within 1-3 working days*
SKU: EN5040/200
£64.90
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WCED WEVKIT63 EV Consumer Unit with B Type 40A RCD and C40 MCB 1WCED WEVKIT63 EV Consumer Unit with B Type 40A RCD and C40 MCB 2

EV Consumer Unit with B Type 40A RCD and C40 MCB

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SKU: WEVKIT63
£102.88
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FuseBox SPDCUKITT1 Fusebox SPDCUKITT1 TYPE 1

Fusebox SPDCUKITT1 Type 1,2 & 3 Surge Protection Device Kit

Delivery usually within 1-3 working days*
SKU: SPDCUKITT1
£109.00
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FuseBox AFSS14 Fusebox AFSS14 Surface Stand Off Plate

Fusebox AFSS14 Surface Stand Off Plate

4 In stock
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SKU: AFSS14
£15.50
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Live Electrical RA210B-030 Live Electrical Double Pole Type A RCBO - Curve B - 10A 1Live Electrical RA210B-030 Live Electrical Double Pole Type A RCBO - Curve B - 10A 2

Live Electrical Double Pole Type A RCBO – Curve B – 10A

Out of stock
This item cannot be back-ordered
SKU: RA210B-030
£16.06

3-£15.74£0.32£16.06
5-£15.26£0.80£16.06
10-£14.78£1.28£16.06
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FuseBox MT10B323 FuseBox MT10B323 32A Triple Pole 10kA B Curve MCB

FuseBox MT10B323 32A Triple Pole 10kA B Curve MCB

15 In stock
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SKU: MT10B323
£9.51
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Live Electrical ENC865 Live Electrical 8 Way Plastic Enclosure IP65

Live Electrical ENC865 IP65 8 Way Plastic Enclosure

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SKU: ENC865
£16.65
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WCED WEV263B-030 WCED 2 Pole 63A 30mA Type B RCD

WCED 2 Pole 63A 30mA Type B RCD

Delivery usually within 1-3 working days*
SKU: WEV263B-030
£97.46

2-£92.59£4.87£97.46
3-£90.15£7.31£97.46
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WCED WME10/SP/5RCBO WCED Consumer Unit Kit with SPD and 5 RCBOs 1

WCED Consumer Unit Kit with SPD and 5 RCBOs

Delivery usually within 1-3 working days*
SKU: WME10/SP/5RCBO
£82.25
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Live Electrical MAC4P32 Live Electrical MAC4P32 32A Modular AC Contractor 4 Pole NO 1Live Electrical MAC4P32 Live Electrical MAC4P32 32A Modular AC Contractor 4 Pole NO 2

Live Electrical MAC4P32 32A Modular AC Contractor 4 Pole NO

5 In stock
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SKU: MAC4P32
£14.99
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Live Electrical AFD20B Live Electrical AFDD Combined with Type A 30mA RCBO - 20A

Live Electrical AFDD Combined with Type A 30mA RCBO – 20A

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SKU: AFD20B
£81.50
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FuseBox AFDD062030B FuseBox AFDD062030B 20A AFDD RCBO 30mA 1FuseBox AFDD062030B FuseBox AFDD062030B 20A AFDD RCBO 30mA 3

FuseBox AFDD062030B 20A AFDD RCBO 30mA

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SKU: AFDD062030B
£84.95
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FuseBox F2021MX Fusebox F2021MX 21 Way RCBO Consumer Unit With SPD 1

Fusebox F2021MX 21 Way RCBO Consumer Unit With SPD

1 In stock
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SKU: F2021MX
£135.90
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Fusebox F2004RA 4 Way 63A RCD Consumer Unit 1

Fusebox F2004RA 4 Way Type A 63A RCD Consumer Unit

Delivery usually within 1-3 working days*
SKU: F2004RA
£33.58
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FuseBox IT1002U Fusebox IT1002U 100A 2 Pole Din Rail Connector 1

Fusebox IT1002U 100A 2 Pole Din Rail Connector

4 In stock
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SKU: IT1002U
£10.95
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WCED WAC4P63 WCED 4 Pole 63A 4NO AC Contactor 1

WCED 4 Pole 230/400V 63A NO Normally Open AC Modular Contactor

9 In stock
More available within 1-3 working days*
SKU: WAC4P63
£16.99

3-£16.57£0.42£16.99
5-£16.14£0.85£16.99
10-£15.72£1.27£16.99
20-£15.29£1.70£16.99
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WCED WKB440C WCED 4 Pole 40A C Curve 10 kA MCB 1WCED WKB440C WCED 4 Pole 40A C Curve 10 kA MCB 2

WCED 4 Pole 40A C Curve 10 kA MCB

Delivery usually within 1-3 working days*
SKU: WKB440C
£13.45

5-£12.91£0.54£13.45
10-£12.58£0.87£13.45
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Live Electrical RA206C-030 Live Electrical Double Pole Type A RCBO - Curve C - 6A 1Live Electrical RA206C-030 Live Electrical Double Pole Type A RCBO - Curve C - 6A 2

Live Electrical Double Pole Type A RCBO – Curve C – 6A

Delivery usually within 1-3 working days*
SKU: RA206C-030
£16.06

3-£15.74£0.32£16.06
5-£15.26£0.80£16.06
10-£14.78£1.28£16.06
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WCED WAC4P63NC WCED 4 Pole 63A 4NC Modular Contactor

WCED 4 Pole 63A 4NC Modular Contactor

Out of stock
This item cannot be back-ordered
SKU: WAC4P63NC
£13.50

3-£13.16£0.34£13.50
5-£12.83£0.68£13.50
10-£12.49£1.01£13.50
20-£12.15£1.35£13.50
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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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