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Circuit Protection

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Hager NCN306 MCB

Hager NDN306A 3 Pole MCB Type D 6A 10kA

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SKU: NDN306A
£40.74
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Hager NCN306 MCB

Hager NDN316A 3 Pole MCB Type D 16A 10kA

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SKU: NDN316A
£40.74
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Hager NCN306 MCB

Hager NDN340A 3 Pole MCB Type D 40A 10kA

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SKU: NDN340A
£40.74
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Hager NCN150A Hager NCN150A Single Pole Type C MCB 50A 10kA

Hager NCN150A Single Pole Type C MCB 50A 10kA

2 In stock
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SKU: NCN150A
£9.54
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Hager NDN125A Hager NDN125A Single Pole Type D MCB 25A 10kA

Hager NDN125A Single Pole Type D MCB 25A 10kA

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SKU: NDN125A
£8.94
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Hager NBN163A Hager NBN163A Single Pole Type B MCB 63A 10kA

Hager NBN163A Single Pole Type B MCB 63A 10kA

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SKU: NBN163A
£10.12
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Hager NBN150A Hager NBN150A Single Pole Type B MCB 50A 10kA

Hager NBN150A Single Pole Type B MCB 50A 10kA

16 In stock
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SKU: NBN150A
£9.54
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Deligo GS4/10M 2.1mm-3.0mm Grommet PE Strip - 10 metres 1

2.1mm-3.0mm Grommet PE Strip – 10 metres

12 In stock
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SKU: GS4/10M
£6.25
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WCED WPEVKIT63-EC IP65 EV Consumer Unit with B Type 40A RCD and C40 MCB

IP65 EV Consumer Unit with B Type 40A RCD and C40 MCB

4 In stock
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SKU: WPEVKIT63-EC
£114.21
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Live Electrical SPB1NC Live Electrical N/C Emergency Stop Switch SPB1NC

Live Electrical SPB1NC N/C Emergency Stop Switch

1 In stock
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SKU: SPB1NC
£5.95
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WCED WME12/MS100 WCED 10 Way Main Switch RCBO Consumer Unit

WCED 14 Way Main Switch Consumer Unit

3 In stock
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SKU: WME16/MS100
£38.75
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WCED WPGU04/620 Plastic IP65 Garage Consumer Unit - 63A Type A RCD 6A/20A B MCBs IP65 Plastic Garage Consumer Unit – 63A Type A RCD with 6A & 20A MCBs – WCED WPGU04/620

WCED WPGU04/620 Plastic IP65 Garage Consumer Unit – 63A Type A RCD 6A/20A B MCBs

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SKU: WPGU04/620
£23.66

3-£23.07£0.59£23.66
5-£22.48£1.18£23.66
10-£21.89£1.77£23.66
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WCED WME18 WCED 18 Way Metal Enclosure 1WCED WME18 WCED 18 Way Metal Enclosure 2

WCED 18 Way Metal Enclosure

2 In stock
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SKU: WME18
£36.71

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WCED WMC150C WCED Miniature Circuit Breaker 6kA Curve C - 50A 1WCED WMC150C WCED Miniature Circuit Breaker 6kA Curve C - 50A 2

WCED Miniature Circuit Breaker 6kA Curve C – 50A

9 In stock
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SKU: WMC150C
£1.53
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FuseBox F2045M FuseBox F2045M 45 Way RCBO Consumer Unit

FuseBox F2045M 45 Way RCBO Consumer Unit

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SKU: F2045M
£192.90
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WCED WME18100TR WCED Metal Dual 100A Type A RCD Consumer Unit – 12 Usable Way

WCED Metal Dual 100A Type A RCD Consumer Unit – 12 Usable Way

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SKU: WME18100TR
£79.25
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WCED WME22100TR/SP WCED Metal Dual 100A Type A RCD SPD Consumer Unit – 14 Usable Way

WCED Metal Dual 100A Type A RCD SPD Consumer Unit – 14 Usable Way

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SKU: WME22100TR/SP
£100.25
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WCED WKB5100C WCED 100A C Curve 5 Pole MCB 10kA 1WCED WKB5100C WCED 100A C Curve 5 Pole MCB 10kA 2

WCED 100A C Curve 5 Pole MCB 10kA

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SKU: WKB5100C
£20.10

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WCED WKB206B WCED 2 Pole 6A B Curve 10 kA MCB 1WCED WKB206B WCED 2 Pole 6A B Curve 10 kA MCB 2

WCED 2 Pole 6A B Curve 10 kA MCB

5 In stock
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SKU: WKB206B
£6.99

5-£6.71£0.28£6.99
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WCED WKB206C WCED 2 Pole 6A C Curve 10 kA MCB 1WCED WKB206C WCED 2 Pole 6A C Curve 10 kA MCB 2

WCED 2 Pole 6A C Curve 10 kA MCB

9 In stock
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SKU: WKB206C
£6.99

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Showing 901–920 of 1808 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.

 

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