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Circuit Protection

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3 Phase PME / PEN Fault Detection Unit c/w 5 Pole 100A MCB Type 2 SPD and PME Relay

2 In Stock
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SKU: WARB5100C/PMESP
£84.22

Niglon VMT2 Phase Failure Relay

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SKU: VMT2
£11.79

FuseBox MT06B201 20A MCB Curve B

42 In Stock
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SKU: MT06B201
£1.95

WCED WPGU04/616 Plastic IP65 Garage Consumer Unit – 63A Type A RCD 6A/16A B MCBs

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SKU: WPGU04/616
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1 - 2 £22.15
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5+ £21.04
10+ £20.49
£22.15
Live Electrical RI25DC Live Electrical 4 Pole 25A DC Rotary Isolator Switch 1Live Electrical RI25DC Live Electrical 4 Pole 25A DC Rotary Isolator Switch 2

Live Electrical RI25DC 4 Pole 25A DC Rotary Isolator Switch

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SKU: RI25DC
£20.99 £16.10

Live Electrical DCM232C 2 Pole C Curve 6kA 32A 600V DC MCB

6 In Stock
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SKU: DCM232C
£9.50

Live Electrical | CB332D | 10kA | Curve D | 3 Pole Bi-Directional MCB | 32A

4 In Stock
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SKU: CB332D
£8.37

Live Electrical CS3P32 3 Pole 32A Changeover Switch

8 In Stock
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SKU: CS3P32
£23.90

WCED WAC4P40NC – 4 Pole 40A 4NC 230V AC Modular Contactor

1 In Stock
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SKU: WAC4P40NC
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1 - 2 £14.16
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20+ £12.74
£14.16

FuseBox | RTAMC32BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 32A

46 In Stock
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SKU: RTAMC32BD
£14.34

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

20 In Stock
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SKU: WRB110C-030
£9.00

WCED WAC4P40 – 4 Pole 40A 4NO 230V AC Modular Contactor

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SKU: WAC4P40
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5+ £13.45
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20+ £12.74
£14.16

WCED WAC2P20CO – 2 Pole 20A 1NO 1NC 230V AC Modular Contactor

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SKU: WAC2P20CO
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1 - 2 £10.95
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20+ £9.85
£10.95

Grommet Strip for Metal Consumer Units – 0.9m

24 In Stock
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SKU: PST9
£0.47

WCED WRDUSP440C 4 Pole SPD + 40A C Curve Type A RCD with Metal Enclosure

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SKU: WRDUSP440C
£55.39

FuseBox MT06B401 40A MCB Curve B

21 In Stock
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SKU: MT06B401
£1.95

FuseBox MT06C201 20A MCB Curve C

30 In Stock
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SKU: MT06C201
£1.95

Hager ARR932U AFD with 30mA RCBO 32A Curve B Type A

10 In Stock
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SKU: ARR932U
£92.96

FuseBox A65E06MGY IP65 6 Way Metal Enclosure – Grey

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Expected back in stock approximately end of August.
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SKU: A65E06MGY
£41.54

WCED 3P 100A Pin Type Busbar – 1 m

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SKU: BBP3100
£11.03

Showing 201–220 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.