VAT:
Quotes
  • 0
    • Electrical4less Logo
    0
    Electrical4less Reviews 4.9 Based on 1500 reviews
    UK Mainland Free Delivery £75 + VAT
    30 Day Return Policy
    Next Day Delivery Cut Off Time 3PM*

    Circuit Protection

    Circuit Protection by Brand

    Circuit Protection by Brand (1912)

    Consumer Units

    Consumer Units (461)

    Circuit Protection Devices

    Circuit Protection Devices (1069)

    EV Circuit Protection

    EV Circuit Protection (107)

    SPD Surge Protection Devices

    SPD Surge Protection Devices (127)

    Three Phase Distribution Boards

    Three Phase Distribution Boards (93)

    Switch Fuses - Isolators

    Switch Fuses - Isolators (175)

    Switch Gear

    Switch Gear (267)

    Street Lighting Circuit Protection

    Street Lighting Circuit Protection (13)

    WCED WKC140C 10kA 1 Pole MCB Curve C 40A

    WCED WKC140C 10kA 1 Pole MCB Curve C 40A
    Delivery usually within 1 - 3 working days *
    SKU: WKC140C
    Quantity Discount
    Quantity Price
    1 - 4 £3.28
    5+ £3.15
    10+ £3.07
    £3.28
    WCED WKC316B 10kA 3 Pole MCB Curve B 16A

    WCED WKC316B 10kA 3 Pole MCB Curve B 16A
    Delivery usually within 1 - 3 working days *
    SKU: WKC316B
    Quantity Discount
    Quantity Price
    1 - 4 £9.95
    5+ £9.55
    10+ £9.30
    £9.95
    WCED WKC320C 10kA 3 Pole MCB Curve C 20A

    WCED WKC320C 10kA 3 Pole MCB Curve C 20A
    Delivery usually within 1 - 3 working days *
    SKU: WKC320C
    Quantity Discount
    Quantity Price
    1 - 4 £9.95
    5+ £9.55
    10+ £9.30
    £9.95
    WCED WKC306B 10kA 3 Pole MCB Curve B 6A

    WCED WKC306B 10kA 3 Pole MCB Curve B 6A
    Delivery usually within 1 - 3 working days *
    SKU: WKC306B
    Quantity Discount
    Quantity Price
    1 - 4 £9.95
    5+ £9.55
    10+ £9.30
    £9.95
    Hager KDN180B Insulated Busbar 1P 80A Fork 16mm² 57M

    Hager KDN180B Insulated Busbar 1P 80A Fork 16mm² – 1 Meter
    3 in stock
    More available within 1 - 3 working days *
    SKU: KDN180B
    £32.02
    Hager KZN021 End Cap for Busbar 1P

    Hager KZN021 End Cap for Busbar 1P
    Delivery usually within 1 - 3 working days *
    SKU: KZN021
    £2.05
    Niglon EDB10D 400A 10-Way Earthing Busbar with Link

    Niglon EDB10D 400A 10-Way Earthing Busbar with Link
    Delivery usually within 1 - 3 working days *
    SKU: EDB10D
    £98.15
    matt:e ARD-2-32-TP-R-SPD EV Connection Centre with O-PEN, 2 x 32A TPN Type A RCBOs & Type 2 SPD

    matt:e ARD-2-32-TP-R-SPD EV Connection Centre with O-PEN, 2 x 32A TPN Type A Curve C RCBOs & Type 2 SPD
    Delivery usually within 1 - 3 working days *
    SKU: ARD-2-32-TP-R-SPD
    £1,144.68
    matt:e EVU-3-32-R Three-Phase EV Consumer Unit with O-PEN® Technology & 3 x 32A Type A RCBOsmatt:e EVU-3-32-R Three-Phase EV Consumer Unit with O-PEN® Technology & 3 x 32A Type A RCBOs

    matt:e EVU-3-32-R Three-Phase EV Consumer Unit with O-PEN® Technology & 3 x 32A Type A RCBOs
    Out of stock
    This item cannot be back-ordered
    SKU: EVU-3-32-R
    £620.53
    Read more
    Niglon M3CU14SP 100A DP Main Switch SPD Consumer Unit, 10 Usable Ways, Ideal for RCBO Setup, BS7671:2018 Compliant, 18th Edition Consumer Unit.

    Niglon M3CU14SP 100A DP Main Switch 10 Way SPD Consumer Unit
    Delivery usually within 1 - 3 working days *
    SKU: M3CU14SP
    £67.34
    Gewiss GW70433P 16A 4-Pole IP66/67/69 Rotary Isolator Switch

    Gewiss GW70433P 16A 4-Pole IP66/67/69 Rotary Isolator Switch
    13 in stock
    More available within 1 - 3 working days *
    SKU: GW70433P
    £14.95
    Gewiss GW70438P 63A 4-Pole IP66/IP67/IP69 Rotary Isolator Switch

    Gewiss GW70438P 63A 4-Pole IP66/IP67/IP69 Rotary Isolator Switch
    2 in stock
    More available within 1 - 3 working days *
    SKU: GW70438P
    £28.79
    Niglon PCU2220M Protego 100A Twin Screw Main Switch 20 Way Metal Consumer Unit

    Niglon PCU2220M Protego 100A Twin Screw Main Switch 20 Way Metal Consumer Unit
    Delivery usually within 1 - 3 working days *
    SKU: PCU2220M
    £54.70
    Niglon PCU0402M Protego 100A Twin Screw Main Switch 2 Way Metal Consumer Unit

    Niglon PCU0402M Protego 100A Twin Screw Main Switch 2 Way Metal Consumer Unit
    Delivery usually within 1 - 3 working days *
    SKU: PCU0402M
    £23.88
    Niglon PMCB10C3-32 32A 3 Pole 10kA Curve C MCB

    Niglon PMCB10C3-32 32A 3 Pole 10kA Curve C MCB
    7 in stock
    More available within 1 - 3 working days *
    SKU: PMCB10C3-32
    £10.51
    Niglon PMCB10D3-16 16A 3 Pole 10kA Curve D MCB

    Niglon PMCB10D3-16 16A 3 Pole 10kA Curve D MCB
    2 in stock
    More available within 1 - 3 working days *
    SKU: PMCB10D3-16
    £10.51
    Niglon PMCB10B1-32 32A Single Pole 10kA Curve B MCB

    Niglon PMCB10B1-32 32A Single Pole 10kA Curve B MCB
    5 in stock
    More available within 1 - 3 working days *
    SKU: PMCB10B1-32
    £3.42
    Niglon PMCB10B1-50 50A Single Pole 10kA Curve B MCB

    Niglon PMCB10B1-50 50A Single Pole 10kA Curve B MCB
    1 in stock
    More available within 1 - 3 working days *
    SKU: PMCB10B1-50
    £3.42
    Niglon PRCBO10C3-16 16A 3 Phase Type A 10kA RCBO

    Niglon PRCBO10C3-16 16A 3 Phase Type A 10kA RCBO
    Delivery usually within 1 - 3 working days *
    SKU: PRCBO10C3-16
    £72.09
    Hager VML112SPDRK consumer unit kit with built-in SPD, 6 RCBOs, 2-module EV RCBO, and meter tails glandHager VML112SPDRK/EV EV Consumer Unit Kit - 12 Usable Ways, 6 RCBOs of your choice and 1 Designed for EV Charging 2 Module RCBO

    Hager VML112SPDRK/EV Consumer Unit Kit with 6 RCBOs and Dedicated EV Charging RCBO
    Delivery usually within 1 - 3 working days *
    SKU: VML112SPDRK/EV
    £185.29

    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.

     






    © 2026 Electrical4less
    We accept Visa We accept Mastercard We accept Maestro We accept PayPal We use Amazon Pay We use Apple Pay We use Google Pay
    Next Day Delivery

    Cut-Off Time and Order Information
    To ensure your order qualifies for next day delivery, please place your order by 3:00 PM. This is subject to all items being available on the shelf at the time of your order. For orders where the total value exceeds £150 + VAT (double our standard carriage-paid order value of £75 + VAT), we are happy to split the delivery into two shipments if some items are needed urgently and others are not immediately available. If you have any questions or need further assistance, feel free to reach out to us via WhatsApp for live support. We’re here to help!

    In Stock 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.

    Backorder Delivery Policy

    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.

    Didn't find what you're looking for?

    No problem — message us directly on WhatsApp and we’ll help you out.

    We usually respond within minutes during working hours.

    Cookie Preferences
    We use cookies to enhance your browsing experience, serve personalised content, and analyse our traffic. By clicking "Accept All", you consent to our use of cookies. To find out more about how we use cookies please view our Privacy Policy.

    Cookie Preferences

    We use cookies to help you navigate the site and use its features. Below you will find details about each cookie category.

    Cookies marked as "Necessary" are stored in your browser and are required for the site to function properly.

    We also use third-party cookies to analyse site usage, remember your preferences, and show you relevant content and ads. These are only stored with your consent.

    You can enable or disable optional cookies below. Turning some off may affect how the site works for you.

    Necessary Always Active

    Necessary cookies are needed for core site features, such as secure login and saving your cookie preferences. They do not store personal data.