VAT:
Quotes
  • 0
    • Electrical4less Logo
    0
    Electrical4less Reviews 4.9 Based on 1458 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 (1874)

    Consumer Units

    Consumer Units (448)

    Circuit Protection Devices

    Circuit Protection Devices (1038)

    EV Circuit Protection

    EV Circuit Protection (107)

    SPD Surge Protection Devices

    SPD Surge Protection Devices (121)

    Three Phase Distribution Boards

    Three Phase Distribution Boards (90)

    Switch Fuses - Isolators

    Switch Fuses - Isolators (158)

    Switch Gear

    Switch Gear (259)

    Street Lighting Circuit Protection

    Street Lighting Circuit Protection (13)

    Live Electrical SA240 Live Electrical 2 Pole 20kA/40kA Type 2 Surge Protective Device

    Live Electrical SA240 2 Pole 20kA/40kA Type 2 SPD Surge Protective Device
    Delivery usually within 1 - 2 working days *
    SKU: SA240
    £17.75
    Hager VML118SPDRK 18 Way Main Switch SPD Consumer Unit with Round Knockouts

    Hager VML118SPDRK 18 Way Main Switch SPD Consumer Unit with Round Knockouts
    3 in stock
    More available within 1 - 3 working days *
    SKU: VML118SPDRK
    £89.95
    Wago 788-512 Wago 788 Relay Module with 2 Changeover Contacts - 24V AC 8A 2.5 mm² Grey 1

    Wago 788-512 Relay Module with 2 Changeover Contacts – 24V AC 8A 2.5mm² Grey
    8 in stock
    More available within 1 - 3 working days *
    SKU: 788-512
    £8.82
    FuseBox SPDCUKITT2TPN Fusebox SPDCUKITT2TPN Three Phase Surge Protection Kit

    Fusebox SPDCUKITT2TPN Three Phase Surge Protection Kit
    1 in stock
    More available within 2 - 3 working days *
    SKU: SPDCUKITT2TPN
    £50.85
    FuseBox MT10D161 FuseBox MT10D161 16A Single Pole 10kA D Curve MCB

    FuseBox MT10D161 16A Single Pole 10kA D Curve MCB
    26 in stock
    More available within 2 - 3 working days *
    SKU: MT10D161
    £3.22
    FuseBox MT10C202 FuseBox MT10C202 20A Double Pole 10kA C Curve MCB

    FuseBox MT10C202 20A Double Pole 10kA C Curve MCB
    9 in stock
    More available within 2 - 3 working days *
    SKU: MT10C202
    £6.68
    FuseBox MT10C253 FuseBox MT10C253 25A Triple Pole 10kA C Curve MCB

    FuseBox MT10C253 25A Triple Pole 10kA C Curve MCB
    1 in stock
    More available within 2 - 3 working days *
    SKU: MT10C253
    £9.51
    FuseBox RTA104030C FuseBox RTA104030C 40A 10kA 30mA C Curve Type A RCBO

    FuseBox RTA104030C 40A 10kA 30mA C Curve Type A RCBO
    24 in stock
    More available within 2 - 3 working days *
    SKU: RTA104030C
    £15.99
    FuseBox KWH1M45 FuseBox KWH1M45 Single Phase kWh Energy Meter 1

    FuseBox KWH1M45 Single Phase kWh Energy Meter
    Delivery usually within 2 - 3 working days *
    SKU: KWH1M45
    £17.50
    Surge Devices LSPDPV1000 SPD Type 1 & 2 1000V DC SPD for Solar/PV Installations

    Surge Devices LSPDPV1000 Type 1+2 SPD for 1000V PV Solar Panels
    Delivery usually within 3 - 4 working days *
    SKU: LSPDPV1000
    Quantity Discount
    Quantity Price
    1 £180.00
    2+ £176.40
    3+ £174.60
    £180.00
    Live Electrical 3P+N 6A C Curve 30mA Type A RCBO

    Live Electrical 3P+N 6A C Curve 30mA Type A RCBO
    Delivery usually within 1 - 3 working days *
    SKU: RTN306C-030N
    £45.15
    Live Electrical 3P+N 40A C Curve 30mA Type A RCBO

    Live Electrical 3P+N 40A C Curve 30mA Type A RCBO
    7 in stock
    More available within 1 - 3 working days *
    SKU: RTN340C-030N
    £45.15
    TPNH03-100S 3 Way Horizontal TP&N Distribution Board with 100A Main Switch and Type 2 SPD – Compact 395mm Wide Three-Phase Consumer UnitTPNH03-100S 2 Way Horizontal TP&N Distribution Board – 100A 4 Pole Main Switch with Type 2 SPD

    Live Electrical TPNH03-100S 2 Way Horizontal TP&N Distribution Board – 100A 4 Pole Main Switch with Type 2 SPD
    4 in stock
    More available within 1 - 3 working days *
    SKU: TPNH03-100S
    £92.57
    Niglon PRCB01C1-16 1P + Neutral 16A Curve C Bi-Directional 10kA RCBO

    Niglon PRCBO10C1-16 1P + Neutral 16A Curve C Bi-Directional 10kA RCBO
    6 in stock
    More available within 1 - 3 working days *
    SKU: PRCBO10C1-16
    £19.21
    FuseBox MT06C251 25A C Curve Miniature Circuit Breaker

    FuseBox MT06C251 25A MCB Curve C
    4 in stock
    More available within 1 - 3 working days *
    SKU: MT06C251
    £1.95
    FuseBox F3011MZ Consumer Unit Kit with 8 RCBOs, integrated SPD, and 100A main switch – boxed kit, not pre-installed.

    FuseBox F3011MZ Bi-Directional SPD Consumer Unit Kit – with 8 RCBOs
    Delivery usually within 2 - 3 working days *
    SKU: F3011MZ/BD/KIT/8
    £175.96
    Hager 38mm Open Grommet - Single

    Hager 38mm Open Grommet – Single
    51 in stock
    More available within 1 - 3 working days *
    SKU: VMGROM
    £0.99
    Live Electrical RI425 4 Pole 25A Rotary Isolator Switch

    Live Electrical RI425 4 Pole 25A Rotary Isolator Switch
    Delivery usually within 1 - 2 working days *
    SKU: RI425
    £10.80
    Hager SBN290 100A Double Pole Isolator

    Hager SBN290 100A Double Pole Isolator
    1 in stock
    More available within 1 - 3 working days *
    SKU: SBN290
    £36.89
    Live Electrical CB340D Live Electrical CB340D 3 Pole 40A D Curve 10kA MCB 1

    Live Electrical CB340D 3 Pole 40A D Curve 10kA MCB
    20 in stock
    More available within 1 - 2 working days *
    SKU: CB340D
    £8.37

    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
    Our website uses cookies and by using the site you agree to this. To find out more about how we use cookies please view our Privacy Policy.