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Circuit Protection

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FuseBox MT10C203 20A Triple Pole 10kA C Curve MCB

7 In Stock
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SKU: MT10C203
£9.51

FuseBox MT10D323 32A Triple Pole 10kA D Curve MCB

4 In Stock
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SKU: MT10D323
£9.51

FuseBox RTA1001004S 4P Type A RCD 100A 100mA

Available to Order
Estimated Lead Time:
Usually 2 - 4 Working Days
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SKU: RTA1001004S
£29.04

WCED WFMSRT00-3F Fused Main Switch with Time Delayed RCD

Out of Stock
Expected back in stock - end of May
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SKU: WFMSRT00-3F
£45.50

WCED | WKC140B | 10kA | Curve B | 1 Pole Bi-Directional MCB | 40A

Available to Order
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Usually 1 - 3 Working Days
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SKU: WKC140B
£2.96

Niglon NSA2-240 Type 2 Surge Protection Kit with Cables

7 In Stock
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SKU: NSA2-240
£24.04

Niglon RCBO1-20/30SAX2 20A Curve B 30mA Bi-Directional A Type RCBO

12 In Stock
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SKU: RCBO1-20/30SAX2
£12.78
Live Electrical RNC10B-30N – 10A Double Pole Single Module RCBO

Live Electrical | RNC110B-030N | 6kA 30mA | Type A B Curve | Bi-Directional Double Pole RCBO | 10A

42 In Stock
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SKU: RNC110B-030N
£9.75

Fusebox RTA1001002S 2 Pole 100A 100mA Type A RCD – “S” Time Delayed

11 In Stock
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SKU: RTA1001002S
£37.62
Live Electrical EV440SP-BP IP65 EV Consumer Unit B40 RCBO + Type 2 SPD + Busbar

Live Electrical EV440SP-BP IP65 EV Consumer Unit B40 RCBO + Type 2 SPD + Busbar

21 In Stock
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SKU: EV440SP-BP
Quantity Discount
Quantity Price
1 - 2 £30.99
3+ £29.44
5+ £28.67
10+ £26.96
20+ £25.41
£30.99
FuseBox F3011MZ Consumer Unit Kit with 8 RCBOs, integrated SPD, and 100A main switch – boxed kit, not pre-installed.Metal FuseBox with 8 Bi-Directional RCBOs – Ideal for EV, Solar & Battery Installs

FuseBox F3011MZ Bi-Directional SPD Consumer Unit Kit – with 8 RCBOs

In Stock
SKU: F3011MZ/BD/KIT/8
£181.23 £176.34

Live Electrical | RKA110B-030 | 1P+N | Bi-Directional RCBO | Type A | Curve B | 10kA | 30mA | 10A

11 In Stock
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SKU: RKA110B-030
£11.59

WCED | WRT332C-030 | 32A C Curve | 10kA | 3 Pole A-Type Bi-Directional RCBO

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Usually 1 - 2 Working Days
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SKU: WRT332C-030
£57.26

Live Electrical MAC4P20 – 4 Pole 20A 4NO 230V AC Modular Contactor

3 In Stock
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SKU: MAC4P20
£12.99

Live Electrical EN3030/200 IP65 Metal Enclosure H:300 x W:300 x D:200mm

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SKU: EN3030/200
£37.29

Envirograf SCUB2 Intumescent Strip for Metal Consumer Units – 150x60mm

8 In Stock
This item cannot be back-ordered
SKU: SCUB2
£3.82

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

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SKU: WEVKIT63
£106.64

WCED Type A High Immunity Curve C 40A 30mA RCBO

15 In Stock
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SKU: WRB140C-030
£9.00

Fusebox AFSS18 Surface Stand Off Plate

4 In Stock
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SKU: AFSS18
£15.35

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

Available to Order
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Usually 2 - 3 Working Days
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SKU: RA210B-030
£13.99

Showing 561–580 of 2375 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.