VAT:
Quotes
  • 0
    • Electrical4less Logo
    0
    Electrical4less Reviews 4.9 Based on 1489 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 (1890)

    Consumer Units

    Consumer Units (448)

    Circuit Protection Devices

    Circuit Protection Devices (1068)

    EV Circuit Protection

    EV Circuit Protection (107)

    SPD Surge Protection Devices

    SPD Surge Protection Devices (121)

    Three Phase Distribution Boards

    Three Phase Distribution Boards (91)

    Switch Fuses - Isolators

    Switch Fuses - Isolators (173)

    Switch Gear

    Switch Gear (260)

    Street Lighting Circuit Protection

    Street Lighting Circuit Protection (13)

    Switchtec NTF0315F 315A 4 Pole IP65 Metal Switch Fuse

    Switchtec NTF0315F NTF Series 315A 4 Pole IP65 Metal Enclosed Switch Fuse With Fuses
    Delivery usually within 1 - 3 working days *
    SKU: NTF0315F
    £771.07
    Switchtec NTF0400F 400A 4 Pole IP65 Metal Switch Fuse

    Switchtec NTF0400F NTF Series 400A 4 Pole IP65 Metal Enclosed Switch Fuse With Fuses
    Delivery usually within 1 - 3 working days *
    SKU: NTF0400F
    £874.21
    Switchtec NTF0630F 630A 4 Pole IP65 Metal Switch Fuse

    Switchtec NTF0630F NTF Series 630A 4 Pole IP65 Metal Enclosed Switch Fuse With Fuses
    Delivery usually within 1 - 3 working days *
    SKU: NTF0630F
    £1,461.66
    Switchtec NTF0800F 800A 4 Pole IP65 Metal Switch Fuse

    Switchtec NTF0800F NTF Series 800A 4 Pole IP65 Metal Enclosed Switch Fuse With Fuses
    Delivery usually within 1 - 3 working days *
    SKU: NTF0800F
    £1,894.01
    FuseBox KWHM3P100 Three Phase Energy Meter

    FuseBox KWHM3P100 Three Phase kWh Energy Meter
    Delivery usually within 1 - 3 working days *
    SKU: KWHM3P100
    £63.70
    RKB140C-030 Live Electrical 1M DP C40A 6kA Bi-Directional Type B RCBO

    Live Electrical 1M DP C40A 6kA Bi-Directional Type B RCBO
    Delivery usually within 1 - 3 working days *
    SKU: RKB140C-030
    £69.64
    RKB120C-030 Live Electrical 1M DP C20A 6kA Bi-Directional Type B RCBO

    Live Electrical 1M DP C20A 6kA Bi-Directional Type B RCBO
    Delivery usually within 1 - 3 working days *
    SKU: RKB120C-030
    £69.64
    Switchtec CURDP1 11 Way Consumer Unit Relocation Kit

    Switchtec | CURDP1 | 11 Way Consumer Unit Relocation Kit | 33 DIN Push-In Terminals | 2.5–10mm
    Delivery usually within 1 - 3 working days *
    SKU: CURDP1
    £68.76
    Switchtec SMC-2504-240 25A Contactor

    Switchtec SMC-2504-240 25A Contactor – 4NC 240V AC Coil
    Delivery usually within 1 - 3 working days *
    SKU: SMC-2504-240
    £16.34
    Switchtec SMC-2520-240 25A Contactor

    Switchtec SMC-2520-240 25A Contactor – 2NO 240V AC Coil
    Delivery usually within 1 - 3 working days *
    SKU: SMC-2520-240
    £9.18
    Switchtec SMC-4020-240 40A Contactor

    Switchtec SMC-4020-240 40A Contactor – 2NO 240V AC Coil
    Delivery usually within 1 - 3 working days *
    SKU: SMC-4020-240
    £21.20
    Switchtec SMC-4040-240 40A Contactor

    Switchtec SMC-4040-240 40A Contactor – 4NO 240V AC Coil
    Delivery usually within 1 - 3 working days *
    SKU: SMC-4040-240
    £29.51
    Switchtec SMC-6340-240 63A Contactor

    Switchtec SMC-6340-240 63A Contactor – 4NO 240V AC Coil
    Delivery usually within 1 - 3 working days *
    SKU: SMC-6340-240
    £29.51
    Switchtec SMC-10020-240 100A Contactor

    Switchtec SMC-10020-240 100A Contactor – 2NO 240V AC Coil
    Delivery usually within 1 - 3 working days *
    SKU: SMC-10020-240
    £34.55
    Switchtec SMC-10040-240 100A Contactor

    Switchtec SMC-10040-240 100A Contactor – 4NO 240V AC Coil
    Delivery usually within 1 - 3 working days *
    SKU: SMC-10040-240
    £68.76
    Garo SIAC425IP65 25A 4 Pole IP65 Rotary Isolator Switch

    Garo | SIAC425IP65 | 25A 4P IP65 | Rotary Isolator Switch
    Delivery usually within 1 - 3 working days *
    SKU: SIAC425IP65
    £13.10
    Garo SIAC4100IP65 100A 4P IP65 Rotary Isolator Switch

    Garo | SIAC4100IP65 | 100A 4P IP65 | Rotary Isolator Switch
    Delivery usually within 1 - 3 working days *
    SKU: SIAC4100IP65
    £36.76
    Niglon T2LEXT Large 2 Way Extension Trough

    Niglon | T2LEXT | General Lighting | Large 2 Way Extension Trough
    Delivery usually within 1 - 3 working days *
    SKU: T2LEXT
    £7.20
    Niglon T06AG61 Street Lighting Service Cut-Out

    Niglon | T06AG61 | Titan | 25A IP43 Street Lighting Service Cut-Out
    Delivery usually within 1 - 3 working days *
    SKU: T06AG61
    £51.50
    Niglon T080G25 Titan Type Cut-Out

    Niglon | T080G25 | Titan | IP43 Twin Fuse Cut-Out
    Delivery usually within 1 - 3 working days *
    SKU: T080G25
    £43.01

    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.