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Circuit Protection

Showing 321–340 of 1809 results

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SPD Surge Protection Devices

SPD Surge Protection Devices (110)

WCED WFIS100 WCED Fused Main Switch with 80 and 100A Fuses 1

WCED Fused Main Switch with 80 and 100A Fuses

Delivery usually within 1-3 working days*
SKU: WFIS100
£12.50

10-£11.75£0.75£12.50
15-£11.16£1.34£12.50
20-£10.69£1.81£12.50
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WCED WRB120C-030 WCED Type A High Immunity Curve C 20A 30mA RCBO 1WCED WRB120C-030 WCED Type A High Immunity Curve C 20A 30mA RCBO 2

WCED Type A High Immunity Curve C 20A 30mA RCBO

16 In stock
More available within 1-3 working days*
SKU: WRB120C-030
£9.99
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FuseBox ACCF Fusebox ACCF Tail Clamp

Fusebox ACCF Tail Clamp

11 In stock
More available within 1-3 working days*
SKU: ACCF
£1.95
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WCED WMEV240B WCED A-Type Electric Vehicle 2 Module Enclosure - 40A RCBO B Curve 1WCED WMEV240B WCED A-Type Electric Vehicle 2 Module Enclosure - 40A RCBO B Curve 2

WCED A-Type Electric Vehicle 2 Module Enclosure – 40A RCBO B Curve

Delivery usually within 1-3 working days*
SKU: WMEV240B
£25.99

2-£24.69£1.30£25.99
3-£24.04£1.95£25.99
5-£23.39£2.60£25.99
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WCED WKB432C WCED 4 Pole 32A C Curve 10 kA MCB 1WCED WKB432C WCED 4 Pole 32A C Curve 10 kA MCB 2

WCED 4 Pole 32A C Curve 10 kA MCB

3 In stock
More available within 1-3 working days*
SKU: WKB432C
£13.45

5-£12.91£0.54£13.45
10-£12.58£0.87£13.45
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Live Electrical SC440 4 Pole 20kA/40kA Type 2 SPD Surge Protective Device

Live Electrical SC440 4 Pole 20kA/40kA Type 2 SPD Surge Protective Device

8 In stock
More available within 1-3 working days*
SKU: SC440
£37.55
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WCED WER20C-030 WCED Double Pole Type A 30mA RCBO Curve C - 20A

WCED Double Pole Type A 30mA RCBO Curve C – 20A

Delivery usually within 1-3 working days*
SKU: WER20C-030
£16.80
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WCED WME10/SP/7RCBO WCED Consumer Unit Kit with SPD and 7 RCBOs 1

WCED Consumer Unit Kit with SPD and 7 RCBOs

Delivery usually within 1-3 working days*
SKU: WME10/SP/7RCBO
£98.63
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Live Electrical LSFS125 3-Phase Metal Switch Fuse Box - without Fuses Live Electrical LSFS125 3-Phase Metal Switch Fuse Box - without Fuses

Live Electrical LSFS125 3-Phase Metal Switch Fuse Box

5 In stock
More available within 1-3 working days*
SKU: LSFS125
£56.58
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WCED WFD132B-030 Bi-Directional Type A 30mA B Curve 32A AFDD

WCED WFD132B-030 Bi-Directional Type A 30mA B Curve 32A AFDD

Delivery usually within 1-3 working days*
SKU: WFD132B-030
£66.15

3-£63.50£2.65£66.15
5-£61.52£4.63£66.15
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Live Electrical MCFS100 Live Electrical 125A Fused Switch With Metal Lid 1Live Electrical MCFS100 Live Electrical 125A Fused Switch With Metal Lid 2

Live Electrical 125A Fused Switch With Metal Lid

5 In stock
More available within 1-3 working days*
SKU: MCFS100
£25.90

3-£24.35£1.55£25.90
5-£23.57£2.33£25.90
10-£22.27£3.63£25.90
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Hager MTN110 MCB 6kA B-10

Hager MTN110 MCB 6kA B-10

19 In stock
More available within 1-3 working days*
SKU: MTN110
£2.38
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Live Electrical TPN06-125 Live Electrical TPN06-125 125A 6 Way TPN Distribution Board 1Live Electrical TPN06-125 Live Electrical TPN06-125 125A 6 Way TPN Distribution Board 2

Live Electrical TPN06-125 125A 6 Way TPN Distribution Board

1 In stock
More available within 1-3 working days*
SKU: TPN06-125
£112.90
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FuseBox RTB630302M FuseBox RTB630302M 63A Double Pole Type B RCD

FuseBox RTB630302M 63A Double Pole Type B RCD

Delivery usually within 1-3 working days*
SKU: RTB630302M
£114.00
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WCED WMCUSP432B 3 Phase SPD with 32A Curve B 4 Pole MCB

WCED WMCUSP432B 3 Phase SPD with 32A Curve B 4 Pole MCB

Delivery usually within 1-3 working days*
SKU: WMCUSP432B
£59.90

3-£56.91£3.00£59.90
5-£55.41£4.49£59.90
10-£53.91£5.99£59.90
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WCED RCD For Consumer Units

WCED Double Pole Type A 30mA RCBO Curve B – 20A

7 In stock
More available within 1-3 working days*
SKU: WER20B-030
£16.80
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WCED WMTP36-R40CSP WCED 3-Phase 36 Ways PME Protection Board 1WCED WMTP36-R40CSP WCED 3-Phase 36 Ways PME Protection Board 3

3-Phase PME / PEN Fault Detection Consumer Unit for 3 x 3 Phase EV Charges

Delivery usually within 1-3 working days*
SKU: WMTP36-R40CSP
£284.40

2-£278.71£5.69£284.40
3-£275.87£8.53£284.40
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Live Electrical 15 Way SPD Metal Consumer Unit Kit c/w 11 RCBOs Live Electrical 15 Way SPD Metal Consumer Unit Kit c/w 11 RCBOs

Live Electrical 15 Way SPD Metal Consumer Unit Kit c/w 11 RCBOs

Delivery usually within 1-3 working days*
SKU: LSMC18M-SP/11RCBO
£142.65
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 Hager MZN175 Padlockable Locking Kit MCB, RCCB, RCBO (padlock not included)

 Hager MZN175 Padlockable Locking Kit MCB, RCCB, RCBO (padlock not included)

Delivery usually within 1-3 working days*
SKU: MZN175
£7.90
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Live Electrical RDA440-030 Live Electrical 4 Pole Type A 40A 30mA RCD

Live Electrical RDA440-030 4 Pole Type A 40A 30mA RCD

Delivery usually within 1-3 working days*
SKU: RDA440-030
£22.50
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More products

Showing 321–340 of 1809 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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