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Circuit Protection

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SPD Surge Protection Devices

SPD Surge Protection Devices (109)

WCED ARD480-030 4 Pole 80A 30mA Type A High Immunity RCD WCED ARD480-030 WCED 4 Pole 80A 30mA Type A High Immunity RCD 2

WCED ARD480-030 4 Pole 80A 30mA Type A High Immunity RCD

1 In stock
More available within 1-3 working days*
SKU: ARD480-030
£22.49

2-£21.37£1.12£22.49
3-£20.80£1.69£22.49
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FuseBox F2030M FuseBox F2030M 30 Way RCBO Consumer Unit

FuseBox F2030M 30 Way RCBO Consumer Unit

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SKU: F2030M
£139.00
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FuseBox EV32A Fusebox EV32A EV Charger Supply Unit 32A

Fusebox EV32A EV Charger Supply Unit 32A

3 In stock
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SKU: EV32A
£46.20
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WCED WKB210B WCED 2 Pole 10A B Curve 10 kA MCB 1WCED WKB210B WCED 2 Pole 10A B Curve 10 kA MCB 2

WCED 2 Pole 10A B Curve 10 kA MCB

3 In stock
More available within 1-3 working days*
SKU: WKB210B
£6.99

5-£6.71£0.28£6.99
10-£6.54£0.45£6.99
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WCED WMEV216B WCED A-Type Electric Vehicle 2 Module Enclosure - 16A RCBO B Curve 1WCED WMEV216B WCED A-Type Electric Vehicle 2 Module Enclosure - 16A RCBO B Curve 2

WCED A-Type Electric Vehicle 2 Module Enclosure – 16A RCBO B Curve

Delivery usually within 1-3 working days*
SKU: WMEV216B
£25.99

2-£24.69£1.30£25.99
3-£24.04£1.95£25.99
5-£23.39£2.60£25.99
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WCED WKB225C WCED 2 Pole 25A C Curve 10 kA MCB 1WCED WKB225C WCED 2 Pole 25A C Curve 10 kA MCB 2

WCED 2 Pole 25A C Curve 10 kA MCB

6 In stock
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SKU: WKB225C
£6.99

5-£6.71£0.28£6.99
10-£6.54£0.45£6.99
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WCED WKB132C WCED 1 Pole 32A C Curve 10 kA MCB 1WCED WKB132C WCED 1 Pole 32A C Curve 10 kA MCB 2

WCED 1 Pole 32A Curve C 10kA MCB

13 In stock
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SKU: WKB132C
£3.35

5-£3.22£0.13£3.35
10-£3.13£0.22£3.35
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WCED WKB120D WCED 1 Pole 20A D Curve 10 kA MCB 1WCED WKB120D WCED 1 Pole 20A D Curve 10 kA MCB 2

WCED 1 Pole 20A D Curve 10kA MCB

10 In stock
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SKU: WKB120D
£3.35

5-£3.22£0.13£3.35
10-£3.13£0.22£3.35
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WCED WKB310C WCED 3 Pole 10A C Curve 10 kA MCB 1WCED WKB310C WCED 3 Pole 10A C Curve 10 kA MCB 2

WCED 3 Pole 10A C Curve 10 kA MCB

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SKU: WKB310C
£9.99

5-£9.59£0.40£9.99
10-£9.34£0.65£9.99
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WCED WKB316C WCED 3 Pole 16A C Curve 10 kA MCB 1WCED WKB316C WCED 3 Pole 16A C Curve 10 kA MCB 2

WCED 3 Pole 16A C Curve 10 kA MCB

8 In stock
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SKU: WKB316C
£9.99

5-£9.59£0.40£9.99
10-£9.34£0.65£9.99
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Live Electrical RA210C-030 Live Electrical Double Pole Type A RCBO - Curve C - 10A 1Live Electrical RA210C-030 Live Electrical Double Pole Type A RCBO - Curve C - 10A 2

Live Electrical Double Pole Type A RCBO – Curve C – 10A

Delivery usually within 1-3 working days*
SKU: RA210C-030
£16.06

3-£15.74£0.32£16.06
5-£15.26£0.80£16.06
10-£14.78£1.28£16.06
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Live Electrical SA220 Live Electrical 2 Pole 10kA/20kA Type 2 Surge Protective Device

Live Electrical 2 Pole 10kA/20kA Type 2 Surge Protective Device

10 In stock
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SKU: SA220
£15.95
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Hager ADA145U Type A RCBO

Hager ADA195U RCBO 10kA C-45A 30mA Type A

1 In stock
This item cannot be back-ordered
SKU: ADA195U
£30.99
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Axiom THR135 Axiom Thermal Overload Relay 4 - 6A

Profix THR135 Thermal Overload Relay 4 – 6A

3 In stock
This item cannot be back-ordered
SKU: THR135
£12.50 £9.90
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Hager VML108SPDRK 8 Way Main Switch Consumer Unit, featuring a 100A main switch and Type 2 SPD, designed with round knockouts for easy cable entry. Unlike the VML108SPD, this version does not include a gland. Hager VML108SPDRK 8 Way Main Switch SPD Consumer Unit with Round Knockouts. Open Front Straight

Hager VML108SPDRK 8 Way Main Switch SPD Consumer Unit with Round Knockouts

1 In stock
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SKU: VML108SPDRK
£74.99
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Hager VML118SPD 18 Way Main Switch SPD Consumer Unit, featuring a 100A main switch and Type 2 SPD, with rectangular knockouts and a matching grommet/gland. Alternative model Hager VML118SPDRK offers round knockouts but requires a separately purchased gland. Hager VML118SPD 18 Way Main Switch SPD Consumer Unit - Open Front - Straight

Hager VML118SPD 18 Way Main Switch SPD Consumer Unit

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SKU: VML118SPD
£89.95
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WCED WER06B-030 WCED Double Pole Type A 30mA RCBO Curve B - 6A

WCED Double Pole Type A 30mA RCBO Curve B – 6A

8 In stock
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SKU: WER06B-030
£16.80
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Europa ECSDS400 Europa Star Delta Timer Relay - 16A 400V AC

Europa Star Delta Timer Relay – 16A 400V AC

Out of stock
This item cannot be back-ordered
SKU: ECSDS400
£29.11
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Wago 788-516 Wago 788 Relay Module with 2 Changeover Contacts - 230V AC 8A 2.5 mm² Grey 1Wago 788-516 Wago 788 Relay Module with 2 Changeover Contacts - 230V AC 8A 2.5 mm² Grey 2

Wago 788-516 Relay Module with 2 Changeover Contacts – 230V AC 8A 2.5mm² Grey

Delivery usually within 1-3 working days*
SKU: 788-516
£11.98
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FuseBox TPN04FB Fusebox TPN04FB 4 Way 125A Three Phase Board 1FuseBox TPN04FB Fusebox TPN04FB 4 Way 125A Three Phase Board 2

Fusebox TPN04FB 4 Way 125A Three Phase Board

1 In stock
This item cannot be back-ordered
SKU: TPN04FB
£162.16
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More products

Showing 761–780 of 1762 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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