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Circuit Protection

Showing 81–100 of 2375 results

Live Electrical | AMR140B-030 | 6kA 30mA | Type A B Curve | Bi-Directional RCBO | 40A

203 In Stock
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Usually 2 - 3 Working Days
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SKU: AMR140B-030
£8.22

WCED Whitecliffe WSPD440 20kA/40kA 3P+N Type 2 SPD Surge Protection Device

Available to Order
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Usually 1 - 2 Working Days
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SKU: WSPD440
£22.38

WCED | WPRC32CSP | IP65 EV Consumer Unit | Type A DP 32A C Curve RCBO & SPD

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Usually 1 - 2 Working Days
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SKU: WPRC32CSP
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Quantity Price
1 - 2 £29.99
3+ £29.39
5+ £28.79
10+ £27.59
£29.99

WCED Type A Bi-Directional Curve B 40A 30mA RCBO – WRB140B-030

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Usually 1 - 2 Working Days
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SKU: WRB140B-030
£10.00

Live Electrical | CB132C | 10kA | Curve C | 1 Pole Bi-Directional MCB | 32A

8 In Stock
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SKU: CB132C
£2.95

WCED 4 Way Empty Plastic Enclosure

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Usually 1 - 2 Working Days
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SKU: WHA4-EV
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1 - 4 £10.23
5+ £9.97
10+ £9.72
20+ £9.46
£10.23

Live Electrical Single Pole 125A Rail Mount Fuse Holder Without Fuse

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Usually 2 - 3 Working Days
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SKU: WS18-125
£8.90

FuseBox MT06B321 32A MCB Curve B

55 In Stock
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Usually 2 - 4 Working Days
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SKU: MT06B321
£1.95
FuseBox RTAMC20 20A Mini Type A RCBO

FuseBox RTAMC20 20A Mini Type A RCBO

35 In Stock
This item cannot be back-ordered
SKU: RTAMC20
£13.50 £12.49

WCED | WMC120B | 6kA | Curve B | 1 Pole Bi-Directional MCB | 20A

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Usually 1 - 2 Working Days
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SKU: WMC120B
£1.37

WCED WAC2P20/24 – 2 Pole 20A 2NO 24V AC Modular Contactor

4 In Stock
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Usually 1 - 2 Working Days
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SKU: WAC2P20/24
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1 - 2 £15.86
3+ £15.46
5+ £15.07
10+ £14.67
20+ £14.27
£15.86
Live Electrical MMGU40C-SP EV Consumer Unit with RCBO SPD & Busbar – 2P 40A C Curve Type ALive Electrical MMGU40C-SP EV Consumer Unit with RCBO SPD & Busbar – 2P 40A C Curve Type A 2

Live Electrical MMGU40C-SP EV Consumer Unit with RCBO SPD & Busbar – 2P 40A C Curve Type A

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Usually 2 - 3 Working Days
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SKU: MMGU40C-SP
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1 - 2 £30.99
3+ £29.44
5+ £28.67
10+ £26.96
20+ £25.41
£30.99

FuseBox | RTA103230B | 10kA | 30mA | Curve B | Type A RCBO | 32A

33 In Stock
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Usually 2 - 4 Working Days
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SKU: RTA103230B
£15.99

Live Electrical SP1401P+N/1 Type 2 SPD Surge Protection Device

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Usually 2 - 3 Working Days
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SKU: SP1401P+N/1
£13.67

Live Electrical 7 Way SPD Metal Consumer Unit Kit with 5 RCBOs

In Stock
SKU: LSMC10M-SP/5RCBO
£85.37

WCED Whitecliffe WEC440SPT12 Stand Alone Type 1 & 2 SPD with Main Switch

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Usually 1 - 2 Working Days
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SKU: WEC440SPT12
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1 £65.94
2+ £62.64
3+ £60.99
5+ £59.35
£65.94

Live Electrical | AMR140B-100 | 100mA Bi-Directional Type A Compact RCBO 40A B Curve

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: AMR140B-100
£9.99

WCED Whitecliffe WME3P40SP 20kA/40kA 3P+N Type 2 SPD Surge Protection with Metal Enclosure

Available to Order
Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WME3P40SP
£30.13

WCED Twin Screw 100A DP Metal Meter Isolator

23 In Stock
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Usually 1 - 2 Working Days
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SKU: MEC2100
£12.47

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

18 In Stock
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Usually 2 - 3 Working Days
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SKU: TPC100
£21.04

Showing 81–100 of 2375 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.