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Circuit Protection

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SPD Surge Protection Devices (109)

Hager ADB420U Hager ADB420U RCBO 10kA B-20A 30mA Type A

Hager ADB420U RCBO 10kA B-20A 30mA Type A

16 In stock
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SKU: ADB420U
£35.76
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Live Electrical 19 Way SPD Metal Consumer Unit Kit c/w 15 RCBOs Live Electrical 19 Way SPD Metal Consumer Unit Kit c/w 15 RCBOs

Live Electrical 19 Way SPD Metal Consumer Unit Kit c/w 15 RCBOs

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SKU: LSMC22M-SP/15RCBO
£178.36
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WCED 3 Way Garage Metal SPD Consumer Unit with 6/32A RCBOs

WCED 3 Way Garage Metal SPD Consumer Unit with 6/32A RCBOs

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SKU: WME06/SP/G/632
£49.00
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FuseBox Bi-Directional Mini RCBO 06A C Curve 30mA Type A - Compact and Reliable Protection

FuseBox Bi-Directional Mini RCBO 20A C Curve 30mA Type A – Compact and Reliable Protection

17 In stock
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SKU: RTAMC20BD
£16.95
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Live Electrical 3P+N 40A C Curve 30mA Type A RCBO

Live Electrical 3P+N 40A C Curve 30mA Type A RCBO

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SKU: RTN340C-030N
£79.95
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WCED WKC110C 10kA 1 Pole MCB Curve C 10A

WCED WKC110C 10kA 1 Pole MCB Curve C 10A

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SKU: WKC110C
£2.65
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Hager JKLABELPACK Spare Label Pack - All Sizes (One Pack)

Hager JKLABELPACK Spare Label Pack – All Sizes (One Pack)

7 In stock
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SKU: JKLABELPACK
£7.98
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Live Electrical TPN12-125 Live Electrical TPN12-125 125A 12 Way TPN Distribution Board 1Live Electrical TPN12-125 Live Electrical TPN12-125 125A 12 Way TPN Distribution Board 2

Live Electrical TPN12-125 125A 12 Way TPN Distribution Board

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SKU: TPN12-125
£164.90
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Live Electrical CB310B Live Electrical CB310B 3 Pole 10A B Curve 10kA MCB 1Live Electrical CB310B Live Electrical CB310B 3 Pole 10A B Curve 10kA MCB 2

Live Electrical CB310B 3 Pole 10A B Curve 10kA MCB

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SKU: CB310B
£9.99
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Live Electrical CB310D Live Electrical CB310D 3 Pole 10A D Curve 10kA MCB 1Live Electrical CB310D Live Electrical CB310D 3 Pole 10A D Curve 10kA MCB 2

Live Electrical CB310D 3 Pole 10A D Curve 10kA MCB

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SKU: CB310D
£9.99
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Hager VMLF114 Hager VMLF114 14 Way Main Switch Flush Consumer Unit

Hager VMLF114 14 Way Main Switch Flush Consumer Unit

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SKU: VMLF114
£81.19
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Hager NBN116A Hager NBN116A Single Pole Type B MCB 16A 10kA

Hager NBN116A Single Pole Type B MCB 16A 10kA

24 In stock
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SKU: NBN116A
£8.94
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Hager VML114 14 Way RCBO Consumer Unit

Hager VML114RK 14 Way Main Switch Consumer Unit with Round Knockouts

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SKU: VML114RK
£52.69
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FuseBox F2016DX100 FuseBox F2016DX100 16 Way Dual RCD Consumer Unit + SPD 1

FuseBox F2016DX100 16 Way Dual RCD Consumer Unit + SPD

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SKU: F2016DX100
£152.90
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FuseBox INC254 FuseBox INC254 Contactor 4P 25A 230V 1

FuseBox INC254 4 Pole 25A 230V NO Normally Open AC Modular Contactor

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SKU: INC254
£11.55
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Live Electrical RT2100-100 Live Electrical 2 Pole Time Delay 100mA 100A RCD

Live Electrical RT2100-100 2 Pole Time Delay 100mA 100A RCD

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SKU: RT2100-100
£28.50
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Live Electrical TIME162D Live Electrical Double Module Digital Timer

Live Electrical Double Module Digital Timer

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SKU: TIME162D
£30.95
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WCED WME12/MS100 WCED 10 Way Main Switch RCBO Consumer Unit

WCED 12 Way Main Switch Consumer Unit

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SKU: WME14/MS100
£35.00

2-£31.50£3.50£35.00
3-£30.80£4.20£35.00
4-£30.10£4.90£35.00
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WCED WME12 WCED 12 Way Metal Enclosure 1WCED WME12 WCED 12 Way Metal Enclosure 2

WCED 12 Way Metal Enclosure

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SKU: WME12
£29.25

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FuseBox AFSS24 Fusebox AFSS24 Surface Stand Off Plate

Fusebox AFSS24 Surface Stand Off Plate

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SKU: AFSS24
£20.99
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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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