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Circuit Protection

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Live Electrical | RDA463-100 | 4 Pole | Bi-Directional Type A RCD | 6kA | 100mA | 63A

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Usually 2 - 3 Working Days
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SKU: RDA463-100
£18.99

PME / PEN Fault Detection Unit – C40A RCBO 4P 63A Contactor SPD & PME Relays + KWH Meter

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Usually 1 - 2 Working Days
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SKU: WMEPME10/SP
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Quantity Price
1 £106.45
2+ £103.26
3+ £101.13
£106.45

Live Electrical | SPV340/1 | 3-Pole | Type 2 DC Surge Device | For Circuits up to 1500V

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Usually 2 - 3 Working Days
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SKU: SPV340/1
£25.28
Cobra RI/DC/25 Cobra Cable 25A DC Rotary Isolator

Cobra Cable 25A DC Rotary Isolator

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Usually 1 - 2 Working Days
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SKU: RI/DC/25
£23.10 £19.99

FuseBox | EV32RAX | EV Charger Consumer Unit | 63A Type A RCD | Type 2 SPD | 32A MCB

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Usually 2 - 4 Working Days
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SKU: EV32RAX
£58.80

WCED | WMIP32BSP | IP65 Metal EV Protection Unit | Type A 32A B Curve RCBO & Type 2 SPD

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Usually 1 - 2 Working Days
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SKU: WMIP32BSP
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Quantity Price
1 £44.78
2+ £43.88
3+ £42.54
5+ £41.42
10+ £40.30
£44.78

FuseBox A65GRAGY Metal IP65 Garage Consumer Unit – Grey

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Usually 2 - 4 Working Days
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SKU: A65GRAGY
£60.00

FuseBox | RTAMC10BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 10A

22 In Stock
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Usually 2 - 4 Working Days
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SKU: RTAMC10BD
£14.34

Live Electrical RNA10C-030 RCBO A Type DP Bi-Directional 10A C Curve 30mA

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Usually 2 - 3 Working Days
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SKU: RNA10C-030
£10.43

Live Electrical | CB220B | 10kA | Curve B | 2 Pole Bi-Directional MCB | 20A

1 In Stock
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Usually 2 - 3 Working Days
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SKU: CB220B
£5.89

Live Electrical | CZ1100C | 10kA | Curve C | 1 Pole Bi-Directional MCB | 100A

4 In Stock
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Usually 2 - 3 Working Days
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SKU: CZ1100C
£6.15

Live Electrical FMC06 6 Module Flush Mounted Metal Enclosure

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Usually 2 - 3 Working Days
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SKU: FMC06
£28.73

Live Electrical FMC10M-SP 7 Way Flush SPD Metal Consumer Unit

1 In Stock
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Usually 2 - 3 Working Days
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SKU: FMC10M-SP
£61.58

Hager CDB525HP 30mA 25A RCCB 1P+N Type B HP for Heat Pumps

1 In Stock
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SKU: CDB525HP
£146.98

Niglon DRT20 Mechanical Stair Timer

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Usually 2 - 3 Working Days
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SKU: DRT20
£18.10

Niglon | PCU1412M | Protego | SPD Consumer Unit Kit | 11 Usable Way | 9 Bi-Directional RCBOs

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Usually 2 - 3 Working Days
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SKU: PCU1412M/9RCBO/BIDIR
£159.69

Niglon PMCB10C1-32 32A Single Pole 10kA Curve C MCB

5 In Stock
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SKU: PMCB10C1-32
£3.42

Live Electrical WCB1-63N Wi-Fi Smart Energy Switch with kWh Metering and Protection

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Usually 2 - 3 Working Days
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SKU: WCB1-63N
£22.66

FuseBox MT06B251 25A MCB Curve B

16 In Stock
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Usually 2 - 4 Working Days
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SKU: MT06B251
£1.95
PVC Trunking (50x50mm) for FuseBox F3015MZ / F3016M Consumer UnitPVC Trunking (50x50mm) for FuseBox F3015MZ / F3016M Consumer Unit 2

PVC Trunking (50x50mm) for FuseBox F3015MZ / F3016M Consumer Unit

2 In Stock
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Usually 1 - 3 Working Days
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SKU: MAK50/50/F3015MZ
£7.95

Showing 781–800 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.