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Circuit Protection

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SPD Surge Protection Devices (107)

Axiom SF63 Axiom SF63 63A TPN Switch Fuse with Fuses

Axiom SF63 63A TPN Switch Fuse with Fuses

Delivery usually within 1-3 working days*
SKU: SF63
£122.50
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Axiom SF100 Axiom SF100 100A TPN Switch Fuse with Fuses

Axiom SF100 100A TPN Switch Fuse with Fuses

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SKU: SF100
£182.50
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FuseBox MT10B101 FuseBox MT10B101 10A Single Pole 10kA B Curve MCB

FuseBox MT10B101 10A Single Pole 10kA B Curve MCB

9 In stock
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SKU: MT10B101
£3.22
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FuseBox MT10B401 FuseBox MT10B401 40A Single Pole 10kA B Curve MCB

FuseBox MT10B401 40A Single Pole 10kA B Curve MCB

18 In stock
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SKU: MT10B401
£3.22
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FuseBox MT10C501 FuseBox MT10C501 50A Single Pole 10kA C Curve MCB

FuseBox MT10C501 50A Single Pole 10kA C Curve MCB

6 In stock
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SKU: MT10C501
£3.34
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FuseBox MT10D201 FuseBox MT10D201 20A Single Pole 10kA D Curve MCB

FuseBox MT10D201 20A Single Pole 10kA D Curve MCB

7 In stock
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SKU: MT10D201
£3.22
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FuseBox MT10C322 FuseBox MT10C322 32A Double Pole 10kA C Curve MCB

FuseBox MT10C322 32A Double Pole 10kA C Curve MCB

13 In stock
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SKU: MT10C322
£6.68
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FuseBox MT10C502 FuseBox MT10C502 50A Double Pole 10kA C Curve MCB

FuseBox MT10C502 50A Double Pole 10kA C Curve MCB

13 In stock
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SKU: MT10C502
£6.95
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Fusebox Consumer Unit MCB D Type

FuseBox MT10D102 10A Double Pole 10kA D Curve MCB

1 In stock
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SKU: MT10D102
£6.68
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FuseBox RTA104030B FuseBox RTA104030B 40A 10kA 30mA B Curve Type A RCBO

FuseBox RTA104030B 40A 10kA 30mA B Curve Type A RCBO

22 In stock
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SKU: RTA104030B
£17.44
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FuseBox IT1004 Fusebox IT1004 100A 4 Pole Main Switch

Fusebox IT1004 100A 4 Pole Main Switch

5 In stock
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SKU: IT1004
£16.50
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Live Electrical PEN2 Live Electrical 2 Way Plastic Enclosure 1

Live Electrical PEN2 2 Way Plastic Enclosure

5 In stock
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SKU: PEN2
£5.05
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PME / PEN Fault Detection Unit – C40A RCBO 4P 63A Contactor SPD & PME Relays + KWH Meter

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

Delivery usually within 1-3 working days*
SKU: WMEPME10/SP
£110.60

2-£108.39£2.21£110.60
3-£107.28£3.32£110.60
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Hager ADB406U Hager ADB406U RCBO 10kA B-6A 30mA Type A

Hager ADB406U RCBO 10kA B-6A 30mA Type A

5 In stock
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SKU: ADB406U
£35.76
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Live Electrical AGU4-SR/W IP65 Metal SPD Garage/EV Consumer Unit with 40A RCBO – White

Live Electrical AGU4-SR/W IP65 Metal SPD Garage/EV Consumer Unit with 40A RCBO – White

8 In stock
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SKU: AGU4-SR/W
£52.92

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10-£48.95£3.97£52.92
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FuseBox AEV32AXBDGY IP65 32A Bi-Directional RCBO & SPD Consumer Unit FuseBox AEV32AXBDGY IP65 32A Bi-Directional RCBO & SPD Consumer Unit

FuseBox AEV32AXBDGY IP65 32A Bi-Directional RCBO & SPD Consumer Unit

16 In stock
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SKU: AEV32AXBDGY
£86.53

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5-£84.15£2.38£86.53
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FuseBox RTF630302 Type F RCD 63A 30mA 2P

FuseBox RTF630302 Type F RCD 63A 30mA 2P

2 In stock
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SKU: RTF630302
£46.80
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Live Electrical CB240C 2 Pole MCB 40A C Curve

Live Electrical CB240C 2 Pole 10kA MCB 40A C Curve

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SKU: CB240C
£5.89
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WCED WKC116B 10kA 1 Pole MCB Curve B 16A

WCED WKC116B 10kA 1 Pole MCB Curve B 16A

Delivery usually within 1-3 working days*
SKU: WKC116B
£2.65

5-£2.54£0.11£2.65
10-£2.48£0.17£2.65
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WCED WKC316C 10kA 3 Pole MCB Curve C 16A

WCED WKC316C 10kA 3 Pole MCB Curve C 16A

Delivery usually within 1-3 working days*
SKU: WKC316C
£9.95

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10-£9.30£0.65£9.95
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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.

 

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