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Circuit Protection

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WCED Double Pole Type A 30mA RCBO Curve C – 10A

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SKU: WER10C-030
£16.80

WCED WAC4P63NC/24 – 4 Pole 63A 4NC 24V AC Modular Contactor

2 In Stock
This item cannot be back-ordered
SKU: WAC4P63NC/24
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1 - 2 £14.16
3+ £13.81
5+ £13.45
10+ £13.10
20+ £12.74
£14.16

Fusebox TPN08FB 8 Way 125A Three Phase Board

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SKU: TPN08FB
£168.21

Fusebox TPN12FB 12 Way 125A Three Phase Board

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SKU: TPN12FB
£202.63

FuseBox MT10B251 25A Single Pole 10kA B Curve MCB

20 In Stock
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SKU: MT10B251
£3.22

FuseBox MT10D321 32A Single Pole 10kA D Curve MCB

8 In Stock
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SKU: MT10D321
£3.22

FuseBox | RTA105030B | 10kA | 30mA | Curve B | Type A RCBO | 50A

11 In Stock
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SKU: RTA105030B
£15.99

Live Electrical PEN4 4 Way Plastic Enclosure

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SKU: PEN4
£6.75

Surge Devices SY12350KA4P/ENC Type 1+2+3 50kA 3 Phase SPD with Indication in IP65 Enclosure

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SKU: SY12350KA4P/ENC
£330.00

Surge Devices SY3-C40X/ENCM Three Phase Type 2+3 SPD in Enclosure with MCB

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SKU: SY2-C40XENCM
£183.00

Surge Devices SPDPV600 Type 2 PV SPD for Solar Installations up to 600V

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SKU: SPDPV600
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1 £77.49
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Surge Devices SPDPV1000 Type 2 SPD for Solar Panels up to 1000V

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SKU: SPDPV1000
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1 £90.00
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£90.00

Hager | ADC920R | 1P+N | 6kA | 30mA | C Curve | Type A Bidirectional RCBO | 20A

1 In Stock
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SKU: ADC920R
£19.70

G-ProBox 100A Three-Phase Compact Check Meter

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Usually 1 - 3 Working Days
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SKU: COMPAC-MET-100A-3PHASE
£80.93
Live Electrical LSGU63632 Live Electrical LSGU63632 Garage 63A RCD Consumer Unit with 6A&32A MCBs

Live Electrical LSGU63632 Garage 63A RCD Consumer Unit with 6A&32A MCBs

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SKU: LSGU63632
£32.84 £31.55

Live Electrical AGU5-SRTC/W IP65 Metal EV Consumer Unit with C40A DP RCBO – White

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SKU: AGU5-SRTC/W
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1 - 2 £53.86
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£53.86

Live Electrical | TPN-125E | Extended Metal Enclosure | For 125A TP&N Distribution Boards

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SKU: TPN-125E
£40.41

Hager CDF563U RCCB 1P+N 63A 30mA F Class

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Usually 2 - 4 Working Days
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SKU: CDF563U
£101.68

Live Electrical RNA6C-030 RCBO A Type DP Bi-Directional 6A C Curve 30mA

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Usually 2 - 3 Working Days
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SKU: RNA6C-030
£10.43

Live Electrical | CB210B | 10kA | Curve B | 2 Pole Bi-Directional MCB | 10A

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Usually 2 - 3 Working Days
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SKU: CB210B
£5.89

Showing 981–1000 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.