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    Circuit Protection

    Circuit Protection by Brand

    Circuit Protection by Brand (1908)

    Consumer Units

    Consumer Units (478)

    Circuit Protection Devices

    Circuit Protection Devices (1064)

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    EV Circuit Protection (106)

    SPD Surge Protection Devices

    SPD Surge Protection Devices (127)

    Three Phase Distribution Boards

    Three Phase Distribution Boards (93)

    Switch Fuses - Isolators

    Switch Fuses - Isolators (174)

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    Switch Gear (266)

    Street Lighting Circuit Protection

    Street Lighting Circuit Protection (13)

    FuseBox MT10B103 FuseBox MT10B103 10A Triple Pole 10kA B Curve MCB

    FuseBox MT10B103 10A Triple Pole 10kA B Curve MCB
    20 In Stock
    More available within 2 - 3 working days*
    SKU: MT10B103
    £9.51
    FuseBox MT10D063 6A Triple Pole 10kA D Curve MCB

    FuseBox MT10D063 6A Triple Pole 10kA D Curve MCB
    16 In Stock
    More available within 2 - 3 working days*
    SKU: MT10D063
    £9.51
    FuseBox MT10D403 FuseBox MT10D403 40A Triple Pole 10kA D Curve MCB

    FuseBox MT10D403 40A Triple Pole 10kA D Curve MCB
    25 In Stock
    More available within 2 - 3 working days*
    SKU: MT10D403
    £9.51
    Live Electrical TPN-250S Live Electrical Metal Enclosure with 4P 20-40KA SPD for 250A TPN Boards 1

    Live Electrical Metal Enclosure with 4P 20-40KA SPD for 250A TPN Boards
    Delivery usually within 1 - 2 working days*
    SKU: TPN-250S
    £144.24
    Surge Devices 800912 Surge Devices Type 1+2+3 50kA Single Phase SPD with Window Indication and Pluggable Modules

    Surge Devices 800912 50kA Type 1+2+3 Single Phase SPD with Window Indication
    Delivery usually within 3 - 4 working days*
    SKU: 800912
    £219.00
    Surge Devices 10020/4 Industrial 50kA Type 1+2+3 Three Phase Surge Protection Device

    Surge Devices 10020/4 Industrial 50kA Type 1+2+3 Three Phase Surge Protection Device
    Delivery usually within 3 - 4 working days*
    SKU: 10020/4
    £306.00
    Surge Devices 10020/2 Type 1+2+3 SPD for TN-S and TNC-S systems

    Surge Devices 10020/2 Type 1+2+3 SPD for TN-S and TNC-S systems
    Delivery usually within 3 - 4 working days*
    SKU: 10020/2
    £153.00
    Surge Devices 381649S Surge Devices Type 1+2+3 50kA 3 Phase Lightning and Surge Arrester with Window Indication and Pluggable Modules

    Surge Devices 381649S Type 1+2+3 50kA Three Phase Lightning and Surge Arrester
    Delivery usually within 3 - 4 working days*
    SKU: 381649S
    £354.00
    Surge Devices 10812/LEDENC Surge Devices Type 1+2+3 50kA Single Phase SPD with All/Full Mode Protection & LED Indication in IP65 Polycarbonate Enclosure

    Surge Devices 10812/LED/ENC 50kA Type 1+2+3 Single Phase SPD with LED Indication in IP65 Enclosure
    Delivery usually within 3 - 4 working days*
    SKU: 10812/LEDENC
    £267.00
    Surge Devices 10812/LEDENCM Surge Devices Type 1+2+3 50kA Single Phase SPD with All/Full Mode Protection & LED Indication & 1P 63A MCB in IP65 Polycarbonate Enclosure

    Surge Devices 10812/LED/ENCM 50kA Type 1+2+3 Single Phase SPD with LED Indication & 63A MCB
    Delivery usually within 3 - 4 working days*
    SKU: 10812/LEDENCM
    £273.00
    Surge Devices 800914ENCM Surge Devices 800914ENCM Type 1+2+3 100kA 3 Phase SPD

    Surge Devices 800914ENCM Type 1+2+3 SPD – 3-Phase Lightning Arrester in IP65 Enclosure with 63A MCB
    Delivery usually within 3 - 4 working days*
    SKU: 800914ENCM
    £483.00
    Surge Devices 800912ENC Surge Devices Type 1+2+3 50kA Single Phase SPD with Window Indication and Pluggable Modules in IP65 Polycarbonate Enclosure

    Surge Devices 800912/ENC 50kA Type 1+2+3 Single Phase SPD in IP65 Enclosure
    Delivery usually within 3 - 4 working days*
    SKU: 800912ENC
    £243.00
    Surge Devices 800912ENCM Surge Devices Type 1+2+3 50kA Single Phase SPD with Window Indication and Pluggable Modules & 1P 63A MCB in IP65 Polycarbonate Enclosure

    Surge Devices 800912/ENCM 50kA Type 1+2+3 Single Phase SPD in IP65 Enclosure with MCB
    Delivery usually within 3 - 4 working days*
    SKU: 800912ENCM
    £249.00
    Surge Devices 10020/4ENCM Surge Protection Devices 10020/4ENCM

    Surge Devices 10020/4ENCM Industrial 50kA Type 1+2+3 Three Phase Surge Protection Kit with MCB & IP65 Enclosure
    Delivery usually within 3 - 4 working days*
    SKU: 10020/4ENCM
    £384.00
    Surge Devices SY12350KA4P Surge Devices Type 1+2+3 50kA 3 Phase Lightning and Surge Arrester with Window Indication

    Surge Devices SY12350KA4P 50kA 3 Phase Type 1+2+3 Lightning and Surge Arrester with Window Indication
    Delivery usually within 3 - 4 working days*
    SKU: SY12350KA4P
    £306.00
    Surge Devices SY12325KA2P Surge Devices Type 1+2+3 25kA Single Phase Lightning and Surge Arrester with Window Indication

    Surge Devices SY12325KA2P Type 1+2+3 SPD – 25kA Single Phase Lightning Arrester for TT, TN-S & TNC-S
    Delivery usually within 3 - 4 working days*
    SKU: SY12325KA2P
    £153.00
    Surge Devices SY1-C40X Surge Devices Type 2 20kA/40kA Single Phase SPD with Window Indication

    Surge Devices SY1-C40X Single Phase Type 2+3 SPD with Remote Contact
    Delivery usually within 3 - 4 working days*
    SKU: SY1-C40X
    £72.00
    Surge Devices SY1-C40XENC Surge Devices Type 2 20kA/40kA Single Phase SPD with Window Indication in IP65 Polycarbonate Enclosure

    Surge Devices SY1-C40X/ENC Single Phase Type 2+3 SPD in IP65 Enclosure
    Delivery usually within 3 - 4 working days*
    SKU: SY1-C40XENC
    £93.00
    Surge Devices SY1-C40XENCM Surge Devices Type 2 20kA/40kA Single Phase SPD with Window Indication & 1P 32A MCB in IP65 Polycarbonate Enclosure

    Surge Devices SY1-C40X/ENCM Single Phase Type 2+3 SPD in Enclosure with MCB
    Delivery usually within 3 - 4 working days*
    SKU: SY1-C40XENCM
    £99.00
    Surge Devices SY2-C40XLED Surge Devices Type 2 20kA/40kA 3 Phase SPD with LED Indication

    Surge Devices SY2-C40XLED Type 2+3 Three Phase SPD with LED Indication
    Delivery usually within 3 - 4 working days*
    SKU: SY2-C40XLED
    £141.00

    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.

     






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