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Circuit Protection

Showing 61–80 of 1744 results

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Electrical Isolators & Switches (110)

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SPD Surge Protection Devices

SPD Surge Protection Devices (109)

Live Electrical AMR116B-030 16A RCBO with 30mA Type A earth leakage protection and bi-directional function Live Electrical AMR116B-030 30mA Type A 16A 6kA B Curve Bi-Directional RCBO

Live Electrical AMR116B-030 30mA Type A 16A 6kA B Curve Bi-Directional RCBO

245 In stock
More available within 1-3 working days*
SKU: AMR116B-030
£9.88

10-£8.89£0.99£9.88
20-£8.40£1.48£9.88
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Hager ADA320G Hager ADA320G RCBO 20 Amp B Type 30mA 6kA

Hager ADA320G RCBO 20 Amp B Type 30mA 6kA

49 In stock
More available within 1-3 working days*
SKU: ADA320G
£12.99
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WCED ATDR2100-100 WCED Time Delay Type A 2 Pole 100A 100mA RCD

WCED ATDR2100-100 Time Delay Type A 2 Pole 100A 100mA RCD

Delivery usually within 1-3 working days*
SKU: ATDR2100-100
£28.49

2-£27.07£1.42£28.49
3-£26.35£2.14£28.49
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WCED WMEPME08/SP/C40 PME Fault Detection Unit 8 Mod c/w C40 RCBO /4P63A Contactor SPD & PME Relays

PME / PEN Fault Detection Unit 8 Mod c/w C40 RCBO /4P63A Contactor SPD & PME Relays

10 In stock
More available within 1-3 working days*
SKU: WMEPME08/SP/C40
£94.50

2-£92.61£1.89£94.50
3-£91.67£2.83£94.50
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FuseBox RTAMB32BD Bi-Directional Mini RCBO 32A B Curve 30mA Type A

FuseBox RTAMB32BD Bi-Directional Mini RCBO 32A B Curve 30mA Type A

46 In stock
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SKU: RTAMB32BD
£14.95
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WCED WME440SP Metal Meter Supply Isolator with Surge Protection

Metal Meter Supply Isolator with Surge Protection

1 In stock
More available within 1-3 working days*
SKU: WME440SP
£35.45

3-£33.68£1.77£35.45
5-£32.79£2.66£35.45
10-£31.91£3.55£35.45
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WCED WME5L/32 WCED Mini CU 5 Way Empty Enclosure

WCED Mini CU 5 Way Empty Enclosure

Delivery usually within 1-3 working days*
SKU: WME5L/32
£11.97

5-£11.67£0.30£11.97
10-£11.37£0.60£11.97
20-£11.07£0.90£11.97
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Live Electrical CB132B Live Electrical CB132B 32A Curve B 10kA MCB 1Live Electrical CB132B Live Electrical CB132B 32A Curve B 10kA MCB 2

Live Electrical CB132B 32A Curve B 10kA MCB

15 In stock
More available within 1-3 working days*
SKU: CB132B
£2.95
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FuseBox MT06B321 FuseBox MT06B321 32A MCB Curve B 1

FuseBox MT06B321 32A MCB Curve B

17 In stock
More available within 1-3 working days*
SKU: MT06B321
£1.95
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WCED WHA465 WCED 4 Way Empty Plastic Enclosure 1WCED WHA465 WCED 4 Way Empty Plastic Enclosure 2

WCED 4 Way Empty Plastic Enclosure

Delivery usually within 1-3 working days*
SKU: WHA4/EV
£9.83

5-£9.58£0.25£9.83
10-£9.34£0.49£9.83
20-£9.09£0.74£9.83
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FuseBox F2020MX FuseBox F2020MX 20 Way RCBO Consumer Unit With SPD 1

FuseBox F2020MX 20 Way RCBO Consumer Unit With SPD

4 In stock
More available within 1-3 working days*
SKU: F2020MX
£70.99

2-£66.73£4.26£70.99
4-£64.60£6.39£70.99
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FuseBox RTAMC20 FuseBox RTAMC20 20A Mini Type A RCBO 1

FuseBox RTAMC20 20A Mini Type A RCBO

71 In stock
More available within 1-3 working days*
SKU: RTAMC20
£13.50
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Live Electrical CB132C Live Electrical CB132C 32A Curve C 10kA MCB 1Live Electrical CB132C Live Electrical CB132C 32A Curve C 10kA MCB 2

Live Electrical CB132C 32A Curve C 10kA MCB

18 In stock
More available within 1-3 working days*
SKU: CB132C
£2.95
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WCED RCD For Consumer Units

WCED Double Pole Type A 30mA RCBO Curve B – 40A

16 In stock
More available within 1-3 working days*
SKU: WER40B-030
£16.80
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WCED WMC106B WCED Miniature Circuit Breaker 6kA Curve B - 6A 1WCED WMC106B WCED Miniature Circuit Breaker 6kA Curve B - 6A 2

WCED Miniature Circuit Breaker 6kA Curve B – 6A

15 In stock
More available within 1-3 working days*
SKU: WMC106B
£1.53

5-£1.47£0.06£1.53
10-£1.43£0.10£1.53
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WCED WME3P40SP WCED Type 2 20kA/40kA 3P+N Surge Arrestor with Metal Enclosure 1

WCED Type 2 20kA/40kA 3P+N Surge Arrestor with Metal Enclosure

Delivery usually within 1-3 working days*
SKU: WME3P40SP
£34.49

3-£32.77£1.72£34.49
5-£31.90£2.59£34.49
10-£31.04£3.45£34.49
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FuseBox RTAMB40 Fusebox RTAMB40 40A Mini Type A RCBO 1FuseBox RTAMB40 Fusebox RTAMB40 40A Mini Type A RCBO 3

Fusebox RTAMB40 40A Mini Type A RCBO

34 In stock
More available within 1-3 working days*
SKU: RTAMB40
£13.50
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WCED WFMS100/3F WCED Metal Fused Main Switch with 3 Fuses 1WCED WFMS100/3F WCED Metal Fused Main Switch with 3 Fuses 2

WCED Metal Fused Main Switch with 3 Fuses

9 In stock
More available within 1-3 working days*
SKU: WFMS100/3F
£26.22

4-£25.17£1.05£26.22
8-£23.86£2.36£26.22
12-£22.55£3.67£26.22
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WCED WMC132B WCED Miniature Circuit Breaker 6kA Curve B - 32A 1WCED WMC132B WCED Miniature Circuit Breaker 6kA Curve B - 32A 2

WCED Miniature Circuit Breaker 6kA Curve B – 32A

16 In stock
More available within 1-3 working days*
SKU: WMC132B
£1.53

5-£1.47£0.06£1.53
10-£1.43£0.10£1.53
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FuseBox SCO125SWB Fusebox SCO125SWB 125A Changeover Switch And Busbar 1

Fusebox SCO125SWB 125A Changeover Switch And Busbar

5 In stock
More available within 1-3 working days*
SKU: SCO125SWB
£27.99
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More products

Showing 61–80 of 1744 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.

Thousands of products in stock ready for next day delivery. Friendly and reliable service, competitive prices.

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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