facebook pixel Circuit Protection - Page 18 of 91 - Electrical 4 Less
National  8:00am to 5pm - Mon-Fri
Quotes
020 7736 5755
sales@electrical4less.co.uk
VAT:
Quotes
Electrical 4 Less
0
Electrical4less Reviews 4.9 Based on 1181 reviews
UK Mainland Free Delivery £75 + VAT
14 Day Return Policy
Next Day Delivery Cut Off Time 3PM*

Circuit Protection

Showing 341–360 of 1808 results

Circuit Protection by Brand

Circuit Protection by Brand (1510)

EV Circuit Protection

EV Circuit Protection (111)

Consumer Units

Consumer Units (283)

DIN Rail Enclosures

DIN Rail Enclosures (51)

Three Phase Distribution Boards

Three Phase Distribution Boards (100)

Circuit Protection Devices

Circuit Protection Devices (804)

Switch Fuses, Isolators & Changeover Switches

Switch Fuses, Isolators & Changeover Switches (117)

Switch Gear

Switch Gear (217)

Meter Boards & Electric Meters

Meter Boards & Electric Meters (16)

SPD Surge Protection Devices

SPD Surge Protection Devices (107)

WCED RCD For Consumer Units

WCED Double Pole Type A 30mA RCBO Curve B – 20A

13 In stock
More available within 1-3 working days*
SKU: WER20B-030
£16.80
Add to quote
FuseBox TPN07FBX Fusebox TPN07FBX 7 Way 125A Three Phase Board 1FuseBox TPN07FBX Fusebox TPN07FBX 7 Way 125A Three Phase Board 2

Fusebox TPN07FBX 7 Way 125A Three Phase Board

Out of stock
This item cannot be back-ordered
SKU: TPN07FBX
£219.40
Read more
 Hager MZN175 Padlockable Locking Kit MCB, RCCB, RCBO (padlock not included)

 Hager MZN175 Padlockable Locking Kit MCB, RCCB, RCBO (padlock not included)

Delivery usually within 1-3 working days*
SKU: MZN175
£7.90
Add to quote
Live Electrical RDA440-030 Live Electrical 4 Pole Type A 40A 30mA RCD

Live Electrical RDA440-030 4 Pole Type A 40A 30mA RCD

Delivery usually within 1-3 working days*
SKU: RDA440-030
£22.50
Add to quote
Live Electrical IS4N-20 Timeguard Weathersafe Rotary Isolator Switch – 4 Pole 20A

Timeguard IS4N-20 4 Pole 20A Rotary Isolator Switch

7 In stock
This item cannot be back-ordered
SKU: IS4N-20
£10.90
Add to quote
FuseBox MT10C101 FuseBox MT10C101 10A Single Pole 10kA C Curve MCB

FuseBox MT10C101 10A Single Pole 10kA C Curve MCB

8 In stock
More available within 1-3 working days*
SKU: MT10C101
£3.22
Add to quote
Live Electrical RNA40B-030 RCBO A Type DP Bi-Directional 40A B Curve 30mA

Live Electrical RNA40B-030 RCBO A Type DP Bi-Directional 40A B Curve 30mA

15 In stock
More available within 1-3 working days*
SKU: RNA40B-030
£16.06
Add to quote
WCED WKC132B 10kA 1 Pole MCB Curve B 32A

WCED WKC132B 10kA 1 Pole MCB Curve B 32A

Delivery usually within 1-3 working days*
SKU: WKC132B
£2.65

5-£2.54£0.11£2.65
10-£2.48£0.17£2.65
Add to quote
Live Electrical CB350C Live Electrical CB350C 3 Pole 50A C Curve 10kA MCB 1Live Electrical CB350C Live Electrical CB350C 3 Pole 50A C Curve 10kA MCB 2

Live Electrical CB350C 3 Pole 50A C Curve 10kA MCB

4 In stock
More available within 1-3 working days*
SKU: CB350C
£10.99
Add to quote
Live Electrical CB363D Live Electrical CB363D 3 Pole 63A D Curve 10kA MCB 1Live Electrical CB363D Live Electrical CB363D 3 Pole 63A D Curve 10kA MCB 2

Live Electrical CB363D 3 Pole 63A D Curve 10kA MCB

9 In stock
More available within 1-3 working days*
SKU: CB363D
£10.99
Add to quote
FuseBox F2021M FuseBox F2021M 21 Way RCBO Consumer Unit 1

FuseBox F2021M 21 Way RCBO Consumer Unit

15 In stock
More available within 1-3 working days*
SKU: F2021M
£48.90
Add to quote
FuseBox MT06B631 FuseBox MT06B631 63A MCB Curve B 1

FuseBox MT06B631 63A MCB Curve B

11 In stock
More available within 1-3 working days*
SKU: MT06B631
£2.90
Add to quote
WCED WME06/SP WCED 3 Way SPD Metal Consumer Unit

WCED 3 Way SPD Metal Consumer Unit

7 In stock
More available within 1-3 working days*
SKU: WME06/SP
£37.01
Add to quote
WCED WME18/SP WCED 15 Way SPD Metal Consumer Unit

WCED 15 Way SPD Metal Consumer Unit

6 In stock
More available within 1-3 working days*
SKU: WME18/SP
£53.75
Add to quote
WCED WAC4P40 WCED 4 Pole 40A 4NO AC Contactor 1

WCED 4 Pole 230/400V 40A NO Normally Open AC Modular Contactor

9 In stock
More available within 1-3 working days*
SKU: WAC4P40
£14.99

3-£14.62£0.37£14.99
5-£14.24£0.75£14.99
10-£13.87£1.12£14.99
20-£13.49£1.50£14.99
Add to quote
FuseBox MT10B061 FuseBox MT10B061 6A Single Pole 10kA B Curve MCB

FuseBox MT10B061 6A Single Pole 10kA B Curve MCB

18 In stock
More available within 1-3 working days*
SKU: MT10B061
£3.22
Add to quote
FuseBox MT10B161 FuseBox MT10B161 16A Single Pole 10kA B Curve MCB

FuseBox MT10B161 16A Single Pole 10kA B Curve MCB

15 In stock
More available within 1-3 working days*
SKU: MT10B161
£3.22
Add to quote
FuseBox MT10C102 FuseBox MT10C102 10A Double Pole 10kA C Curve MCB

FuseBox MT10C102 10A Double Pole 10kA C Curve MCB

11 In stock
More available within 1-3 working days*
SKU: MT10C102
£6.68
Add to quote
FuseBox RTA0630304 Fusebox RTA0630304 63A 4 Pole 30MA Type A RCD

Fusebox RTA0630304 63A 4 Pole 30mA Type A RCD

Delivery usually within 1-3 working days*
SKU: RTA0630304
£23.50
Add to quote
Live Electrical DPN63A Live Electrical Double Pole 63A Copper Busbar 1m 10mm² 108 Pin 1

Live Electrical Double Pole 63A Copper Busbar 1m 10mm² 108 Pin

Delivery usually within 1-3 working days*
SKU: DPN63A
£8.85
Add to quote
More products

Showing 341–360 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.

Thousands of products in stock ready for next day delivery. Friendly and reliable service, competitive prices.

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.

 

READ MORE
© 2025 Electrical 4 Less
Electrical 4 Less

    Electrical 4 Less
    whatsup-logo
    Delivery Policy
    Free Next-Day Delivery Over £75 + VAT:
    Orders above £75 + VAT qualify for free next-day delivery via DPD for in-stock items. While we strive for timely dispatch, we recommend placing orders early to avoid potential delays. Once dispatched, unexpected issues may arise despite the courier’s efforts.

    Orders Below £150 + VAT:
    To keep costs manageable, we dispatch your order once all items are ready, including products with longer lead times.

    Need items faster? You can pay for an additional delivery service to receive in-stock items sooner. Simply email us with your order details, and we’ll send you a payment link for the extra delivery cost.

    Orders Above £150 + VAT:
    For larger orders, we can split delivery at no extra cost. In-stock items will be sent immediately, with the remaining items dispatched once available.
    Dispatch Times
    Items with Lead Times (e.g., 1–3 Working Days):
    This means we need to source the product from our supplier before sending it to you. The estimated dispatch time is displayed on each product page.

    Out of Stock at Supplier:
    If an item is unavailable at the supplier, we will contact you promptly. You’ll have the option to choose an alternative product or request a full refund.