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Circuit Protection

Showing 81–100 of 1786 results

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SPD Surge Protection Devices (109)

WCED WFMS/3P WCED WFMS/3P 3 Phase 125A Metal Switch Fuse 1

WCED WFMS/3P 3 Phase 125A Metal Switch Fuse

Delivery usually within 1-3 working days*
SKU: WFMS/3P
£65.40
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FuseBox SCO125SWB Fusebox SCO125SWB 125A Changeover Switch And Busbar 1

Fusebox SCO125SWB 125A Changeover Switch And Busbar

5 In stock
More available within 1-3 working days*
SKU: SCO125SWB
£27.99
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Live Electrical MAC2P25 Live Electrical MAC2P25 25A Modular AC Contactor 2 Pole NO 1Live Electrical MAC2P25 Live Electrical MAC2P25 25A Modular AC Contactor 2 Pole NO 2

Live Electrical MAC2P25 25A Modular AC Contactor 2 Pole NO

Delivery usually within 1-3 working days*
SKU: MAC2P25
£6.24
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Live Electrical EMCU2-A Live Electrical 2 Way Empty DIN Rail Metal Enclosure With Lid EMCU2-A

Live Electrical EMCU4-A 4 Way Empty DIN Rail Metal Enclosure With Lid

Delivery usually within 1-3 working days*
SKU: EMCU4-A
£9.90
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WCED RCD For Consumer Units

WCED Double Pole Type A 30mA RCBO Curve B – 32A

Out of stock
This item cannot be back-ordered
SKU: WER32B-030
£16.80
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FuseBox RTA062530B FuseBox RTA062530B 25A Type A RCBO 30mA 1

FuseBox RTA062530B 25A Type A RCBO 30mA

15 In stock
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SKU: RTA062530B
£9.99
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FuseBox SPDCUKITT2 FuseBox SPDCUKITT2 Type 2 Surge Protection Device Kit 1

FuseBox SPDCUKITT2 Type 2 Surge Protection Device Kit

7 In stock
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SKU: SPDCUKITT2
£25.50
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WCED WMC120B WCED Miniature Circuit Breaker 6kA Curve B - 20A 1WCED WMC120B WCED Miniature Circuit Breaker 6kA Curve B - 20A 2

WCED Miniature Circuit Breaker 6kA Curve B – 20A

10 In stock
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SKU: WMC120B
£1.53
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IP65 EV Consumer Unit with Type A DP B32 RCBO and SPD IP65 EV Consumer Unit with Type A DP B32 RCBO and SPD

IP65 EV Consumer Unit with Type A DP B32 RCBO and SPD

Delivery usually within 1-3 working days*
SKU: WPRC32BSP
£36.38

3-£35.65£0.73£36.38
5-£35.02£1.36£36.38
10-£33.65£2.73£36.38
20-£31.83£4.55£36.38
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Live Electrical CB320C Live Electrical CB320C 3 Pole 20A C Curve 10kA MCB 1Live Electrical CB320C Live Electrical CB320C 3 Pole 20A C Curve 10kA MCB 2

Live Electrical CB320C 3 Pole 20A C Curve 10kA MCB

12 In stock
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SKU: CB320C
£9.99
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FuseBox F2004M FuseBox 2004M 4 Way RCBO Consumer Unit

FuseBox 2004M 4 Way RCBO Consumer Unit

4 In stock
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SKU: F2004M
£24.99
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WCED MEC2100 WCED Twin Screw 100A DP Metal Meter Isolator 1

WCED Twin Screw 100A DP Metal Meter Isolator

21 In stock
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SKU: MEC2100
£13.40

3-£12.73£0.67£13.40
5-£12.40£1.01£13.40
10-£12.06£1.34£13.40
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Live Electrical CB116B Live Electrical CB116B 16A Curve B 10kA MCB 1Live Electrical CB116B Live Electrical CB116B 16A Curve B 10kA MCB 2

Live Electrical CB116B 16A Curve B 10kA MCB

16 In stock
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SKU: CB116B
£2.95
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WCED WKB163B WCED 1 Pole 63A B Curve 10 kA MCB 1WCED WKB163B WCED 1 Pole 63A B Curve 10 kA MCB 2

WCED 1 Pole 63A Curve B 10kA MCB

11 In stock
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SKU: WKB163B
£3.35

5-£3.22£0.13£3.35
10-£3.13£0.22£3.35
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WCED WSPD240KIT2 Type 2 40kA Surge Arrestor SPD Kit with Busbar and Earth Link 1

Type 2 40kA Surge Arrestor SPD Kit with Busbar and Earth Link

9 In stock
More available within 1-3 working days*
SKU: WSPD240KIT2
£16.95

3-£16.10£0.85£16.95
5-£15.68£1.27£16.95
10-£15.26£1.70£16.95
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WCED WMEPME08/SP/C32 PME Fault Detection Unit 8 Mod c/w C32 RCBO /4P63A contactor SPD & PME Relays

PME / PEN Fault Detection Unit 8 Mod c/w C32 RCBO /4P63A Contactor SPD & PME Relays

Delivery usually within 1-3 working days*
SKU: WMEPME08/SP/C32
£94.50

2-£92.61£1.89£94.50
3-£91.67£2.83£94.50
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WCED WAC2P32/1M WCED WAC2P32/1M 2 Pole 32A Normally Open AC Contactor - 1 Module 1

WCED WAC2P32/1M 2 Pole 32A NO Normally Open AC Modular Contactor – 1 Module

19 In stock
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SKU: WAC2P32/1M
£10.43

3-£10.17£0.26£10.43
5-£9.91£0.52£10.43
10-£9.65£0.78£10.43
20-£9.39£1.04£10.43
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Live Electrical AMR120B-030 20A RCBO with 30mA Type A earth leakage protection and bi-directional function for PV systems Live Electrical AMR120B-030 30mA Type A 20A 6kA B Curve Bi-Directional RCBO

Live Electrical AMR120B-030 30mA Type A 20A 6kA B Curve Bi-Directional RCBO

357 In stock
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SKU: AMR120B-030
£9.88

10-£8.89£0.99£9.88
20-£8.40£1.48£9.88
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FuseBox RTAMB06BD Bi-Directional Mini RCBO 6A B Curve 30mA Type A

FuseBox RTAMB06BD Bi-Directional Mini RCBO 6A B Curve 30mA Type A

51 In stock
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SKU: RTAMB06BD
£14.95
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Live Electrical WS18-125 Live Electrical Single Pole 125A Rail Mount Fuse Holder Without Fuse 1Live Electrical WS18-125 Live Electrical Single Pole 125A Rail Mount Fuse Holder Without Fuse 2

Live Electrical Single Pole 125A Rail Mount Fuse Holder Without Fuse

Delivery usually within 1-3 working days*
SKU: WS18-125
£8.90
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More products

Showing 81–100 of 1786 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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