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Circuit Protection

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SPD Surge Protection Devices (109)

WCED WKB263C WCED 2 Pole 63A C Curve 10 kA MCB 1WCED WKB263C WCED 2 Pole 63A C Curve 10 kA MCB 2

WCED 2 Pole 63A C Curve 10 kA MCB

1 In stock
More available within 1-3 working days*
SKU: WKB263C
£6.99

5-£6.71£0.28£6.99
10-£6.54£0.45£6.99
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WCED WAC4P20 WCED 4 Pole 20A 4NO AC Contactor 1

WCED 4 Pole 230/400V 20A NO Normally Open AC Modular Contactor

Delivery usually within 1-3 working days*
SKU: WAC4P20
£9.99

3-£9.74£0.25£9.99
5-£9.49£0.50£9.99
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WCED WMEV216C WCED A-Type Electric Vehicle 2 Module Enclosure - 16A RCBO C Curve 1WCED WMEV216C WCED A-Type Electric Vehicle 2 Module Enclosure - 16A RCBO C Curve 2

WCED A-Type Electric Vehicle 2 Module Enclosure – 16A RCBO C Curve

Delivery usually within 1-3 working days*
SKU: WMEV216C
£25.99

2-£24.69£1.30£25.99
3-£24.04£1.95£25.99
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Live Electrical RI25DC Live Electrical 4 Pole 25A DC Rotary Isolator Switch 1Live Electrical RI25DC Live Electrical 4 Pole 25A DC Rotary Isolator Switch 2

Live Electrical RI25DC 4 Pole 25A DC Rotary Isolator Switch

4 In stock
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SKU: RI25DC
£20.99 £16.10
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WCED ATDR4100-100 Time Delay Type A 4 Pole 100A 100mA RCD

WCED ATDR4100-100 Time Delay Type A 4 Pole 100A 100mA RCD

9 In stock
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SKU: ATDR4100-100
£34.97

2-£33.22£1.75£34.97
3-£32.35£2.62£34.97
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WCED WER06C-030 WCED Double Pole Type A 30mA RCBO Curve C - 6A

WCED Double Pole Type A 30mA RCBO Curve C – 6A

26 In stock
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SKU: WER06C-030
£16.80
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WCED WMEPME12/LBK PME Fault Detection Unit with Load Management 12 Mod c/w C40 RCBO Relays and SPD 1WCED WMEPME12/LBK PME Fault Detection Unit with Load Management 12 Mod c/w C40 RCBO Relays and SPD 2

PME / PEN Fault Detection Unit with Load Management 12 Mod c/w C40 RCBO Relays Meter and SPD

2 In stock
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SKU: WMEPME12/LBK
£140.28

2-£137.47£2.81£140.28
3-£136.07£4.21£140.28
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WCED WPEPME12/LB PME Fault Detection Unit IP65 with Load Management 12 Mod c/w C40 RCBO Relays and SPD 1WCED WPEPME12/LB PME Fault Detection Unit IP65 with Load Management 12 Mod c/w C40 RCBO Relays and SPD 2

PME / PEN Fault Detection Unit IP65 with Load Management 12 Mod c/w C40 RCBO Relays and SPD

Delivery usually within 1-3 working days*
SKU: WPEPME12/LB
£136.40

2-£133.67£2.73£136.40
3-£132.31£4.09£136.40
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FuseBox SPDCUKITT2TPN Fusebox SPDCUKITT2TPN Three Phase Surge Protection Kit

Fusebox SPDCUKITT2TPN Three Phase Surge Protection Kit

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SKU: SPDCUKITT2TPN
£55.48
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FuseBox MT10D161 FuseBox MT10D161 16A Single Pole 10kA D Curve MCB

FuseBox MT10D161 16A Single Pole 10kA D Curve MCB

27 In stock
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SKU: MT10D161
£3.22
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FuseBox MT10C403 FuseBox MT10C403 40A Triple Pole 10kA C Curve MCB

FuseBox MT10C403 40A Triple Pole 10kA C Curve MCB

6 In stock
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SKU: MT10C403
£9.51
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FuseBox ABEC Fusebox ABEC TPN Busbar End Caps (Pack of 30)

Fusebox ABEC TPN Busbar End Caps (Pack of 30)

28 In stock
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SKU: ABEC
£0.90
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Live Electrical LSMC8M-SP Live Electrical 5 Way SPD Metal Consumer Unit 1Live Electrical LSMC8M-SP Live Electrical 5 Way SPD Metal Consumer Unit 2

Live Electrical 5 Way SPD Metal Consumer Unit

6 In stock
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SKU: LSMC8M-SP
£40.91

2-£40.09£0.82£40.91
4-£39.68£1.23£40.91
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Live Electrical LSMC12M-SP Live Electrical 9 Way SPD Metal Consumer Unit 1Live Electrical LSMC12M-SP Live Electrical 9 Way SPD Metal Consumer Unit 2

Live Electrical 9 Way SPD Metal Consumer Unit

11 In stock
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SKU: LSMC12M-SP
£44.55

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4-£43.21£1.34£44.55
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WCED WRT110B-030 Bi-Directional 10kA Type A 30mA RCBO Curve B 10A

WCED WRT110B-030 Bi-Directional 10kA Type A 30mA RCBO Curve B 10A

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SKU: WRT110B-030
£13.50
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Hager VML114 14 Way RCBO Consumer Unit

Hager VML114 14 Way Main Switch Consumer Unit

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SKU: VML114
£52.68
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Hager SBN290 Hager SBN290 100A Double Pole Isolator 1

Hager SBN290 100A Double Pole Isolator

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SKU: SBN290
£36.89
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Live Electrical TPN08-125 Live Electrical TPN08-125 125A 8 Way TPN Distribution Board 1Live Electrical TPN08-125 Live Electrical TPN08-125 125A 8 Way TPN Distribution Board 2

Live Electrical TPN08-125 125A 8 Way TPN Distribution Board

1 In stock
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SKU: TPN08-125
£125.90
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Hager MTN106 MCB 6kA B-6

Hager MTN106 MCB 6kA B-6

7 In stock
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SKU: MTN106
£2.38
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Live Electrical CB340D Live Electrical CB340D 3 Pole 40A D Curve 10kA MCB 1Live Electrical CB340D Live Electrical CB340D 3 Pole 40A D Curve 10kA MCB 2

Live Electrical CB340D 3 Pole 40A D Curve 10kA MCB

21 In stock
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SKU: CB340D
£10.99
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Showing 461–480 of 1762 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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