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Circuit Protection

Showing 181–200 of 1744 results

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SPD Surge Protection Devices

SPD Surge Protection Devices (109)

Live Electrical CS3P32 Live Electrical 3 Pole 32A Changeover Switch 1Live Electrical CS3P32 Live Electrical 3 Pole 32A Changeover Switch 2

Live Electrical CS3P32 3 Pole 32A Changeover Switch

15 In stock
More available within 1-3 working days*
SKU: CS3P32
£23.90
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Live Electrical PEN2100D 100A 2 Pole Mains Supply Isolator and Enclosure 

Live Electrical PEN2100D 100A 2 Pole Mains Supply Isolator and Enclosure 

6 In stock
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SKU: PEN2100D
£9.02
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FuseBox MT06C201 FuseBox MT06C201 20A MCB Curve C 1

FuseBox MT06C201 20A MCB Curve C

20 In stock
More available within 1-3 working days*
SKU: MT06C201
£1.95
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FuseBox MT06C321 FuseBox MT06C321 32A MCB Curve C 1

FuseBox MT06C321 32A MCB Curve C

37 In stock
More available within 1-3 working days*
SKU: MT06C321
£1.95
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FuseBox RTAMC25 FuseBox RTAMC25 25A Mini Type A RCBO 1

FuseBox RTAMC25 25A Mini Type A RCBO

Out of stock
This item cannot be back-ordered
SKU: RTAMC25
£13.50
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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 – 32A

9 In stock
More available within 1-3 working days*
SKU: WER32C-030
£16.80
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FuseBox RTAMB40BD Bi-Directional Mini RCBO 40A B Curve 30mA Type A

FuseBox RTAMB40BD Bi-Directional Mini RCBO 40A B Curve 30mA Type A

48 In stock
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SKU: RTAMB40BD
£14.95
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WCED WRB110C-030 WCED Type A High Immunity Curve C 10A 30mA RCBO 1WCED WRB110C-030 WCED Type A High Immunity Curve C 10A 30mA RCBO 2

WCED Type A High Immunity Curve C 10A 30mA RCBO

24 In stock
More available within 1-3 working days*
SKU: WRB110C-030
£9.99

5-£9.49£0.50£9.99
10-£8.99£1.00£9.99
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WCED WAC4P100 WCED 4 Pole 100A 4NO AC Contactor 1WCED WAC4P100 WCED 4 Pole 100A 4NO AC Contactor 2

WCED 4 Pole 230/400V 100A NO Normally Open AC Modular Contactor

3 In stock
More available within 1-3 working days*
SKU: WAC4P100
£31.35

3-£30.57£0.78£31.35
5-£29.78£1.57£31.35
10-£29.00£2.35£31.35
20-£28.22£3.14£31.35
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WCED WFMS100/3FSP WCED Metal Fused Main Switch with 3 Fuses & SPD 1WCED WFMS100/3FSP WCED Metal Fused Main Switch with 3 Fuses & SPD 2

WCED Metal Fused Main Switch with 3 Fuses & SPD

Delivery usually within 1-3 working days*
SKU: WFMS100/3FSP
£65.40

3-£62.13£3.27£65.40
5-£60.50£4.91£65.40
10-£58.86£6.54£65.40
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Live Electrical MS2100 Live Electrical 100A Double Pole Main Switch

Live Electrical MS2100 100A Double Pole Main Switch

1 In stock
More available within 1-3 working days*
SKU: MS2100
£4.37
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Live Electrical CB332D Live Electrical CB332D 3 Pole 32A D Curve 10kA MCB 1Live Electrical CB332D Live Electrical CB332D 3 Pole 32A D Curve 10kA MCB 2

Live Electrical CB332D 3 Pole 32A D Curve 10kA MCB

6 In stock
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SKU: CB332D
£10.99
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Envirograf EBU2 EnviroBurst Automatic Fire Suppression System - 300mm Long Tube 1Envirograf EBU2 EnviroBurst Automatic Fire Suppression System - 300mm Long Tube 2

EnviroBurst Automatic Fire Suppression System – 300mm Long Tube

7 In stock
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SKU: EBU2
£36.88
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FuseBox RTA103230C FuseBox RTA103230C 32A 10kA 30mA C Curve Type A RCBO

FuseBox RTA103230C 32A 10kA 30mA C Curve Type A RCBO

27 In stock
More available within 1-3 working days*
SKU: RTA103230C
£17.44
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Live Electrical DPC100 Live Electrical Double Pole 100A Copper Busbar 1m 16mm² 54 Pin 1

Live Electrical Double Pole 100A Copper Busbar 1m 16mm² 54 Pin

20 In stock
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SKU: DPC100
£11.36
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Fire Retardant Board / Consumer Unit

Fire Retardant Consumer Unit / Meter Board 12″ x 24″ ( 304 x 608mm )

2 In stock
More available within 1-3 working days*
SKU: MB1224
£18.90
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FuseBox SF0100RA Fusebox SFO100RA Fused Switch With 100A 100MA Type A RCD

Fusebox SFO100RA 100A Fused Switch With 100mA Type A RCD

9 In stock
More available within 1-3 working days*
SKU: SF0100RA
£58.45
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Live Electrical SA140 Live Electrical 1 Pole 20kA/40kA Type 2 Surge Protective Device

Live Electrical SA140 1 Pole 20kA/40kA Type 2 Surge Protective Device

9 In stock
More available within 1-3 working days*
SKU: SA140
£9.55
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FuseBox RTA101030B FuseBox RTA101030B 10A 30mA 10kA B Curve Type A RCBO

FuseBox RTA101030B 10A 30mA 10kA B Curve Type A RCBO

20 In stock
More available within 1-3 working days*
SKU: RTA101030B
£17.44
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WCED WMECOS125-L WCED Changeover Switch 125A with Metal Enclosure 1WCED WMECOS125-L WCED Changeover Switch 125A with Metal Enclosure 2

WCED WMECOS125-L 125A Changeover Switch with Metal Enclosure

Delivery usually within 1-3 working days*
SKU: WMECOS125-L
£33.50
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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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