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    Circuit Protection

    Circuit Protection by Brand

    Circuit Protection by Brand (1912)

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    Consumer Units (461)

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    Circuit Protection Devices (1069)

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    Three Phase Distribution Boards (93)

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    Switch Fuses - Isolators (175)

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    Street Lighting Circuit Protection

    Street Lighting Circuit Protection (13)

    Europa ECPF08 Europa Phase Failure Relay - 10A 220-460V AC Over / Under Voltage Phase Failure

    Europa Phase Failure Relay – 10A 220-460V AC
    2 in stock
    This item cannot be back-ordered
    SKU: ECPF08
    £22.06
    Europa GS4-BLACK Europa 14 Pin Miniature Relay - 4P CO 10A 300V AC

    Europa GS4-BLACK 14 Pin Miniature Relay – 4P CO 10A 300V AC
    2 in stock
    This item cannot be back-ordered
    SKU: GS4-BLACK
    £4.95
    Europa TM-KTS011 Europa Cooling Thermostat - 0-60°C N/O

    Europa TM-KTS011 Cooling Thermostat – 0-60°C N/O
    5 in stock
    This item cannot be back-ordered
    SKU: TM-KTS011
    £14.68
    Wago 788-515 Wago 788 Relay Module with 2 Changeover Contacts - 115V AC 8A 2.5 mm² Grey 1

    Wago 788-515 Relay Module with 2 Changeover Contacts – 115V AC 8A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 788-515
    £10.07
    Wago 288-437 Wago 288 Relay Module with Driven Contacts - 2 Changeover Contacts - 24V DC 5A 2.5 mm²

    Wago 288-437 Relay Module with Driven Contacts – 2 Changeover Contacts – 24V DC 5A 2.5mm²
    Delivery usually within 1 - 3 working days *
    SKU: 288-437
    £64.14
    TPNMMB FuseBox TPN Modbus Meter Board 125A

    FuseBox TPN Modbus Meter Board 125A
    Delivery usually within 2 - 3 working days *
    SKU: TPNMMB
    £343.14
    FuseBox MT10D101 FuseBox MT10D101 10A Single Pole 10kA D Curve MCB

    FuseBox MT10D101 10A Single Pole 10kA D Curve MCB
    12 in stock
    More available within 2 - 3 working days *
    SKU: MT10D101
    £3.22
    FuseBox MT10D251 FuseBox MT10D251 25A Single Pole 10kA D Curve MCB

    FuseBox MT10D251 25A Single Pole 10kA D Curve MCB
    12 in stock
    More available within 2 - 3 working days *
    SKU: MT10D251
    £3.22
    FuseBox MT10D062 6A Double Pole 10kA D Curve MCB

    FuseBox MT10D062 6A Double Pole 10kA D Curve MCB
    6 in stock
    More available within 2 - 3 working days *
    SKU: MT10D062
    £6.68
    FuseBox MT10D252 FuseBox MT10D252 25A Double Pole 10kA D Curve MCB

    FuseBox MT10D252 25A Double Pole 10kA D Curve MCB
    Delivery usually within 2 - 3 working days *
    SKU: MT10D252
    £6.68
    FuseBox MT10D402 40A Double Pole 10kA D Curve MCB

    FuseBox MT10D402 40A Double Pole 10kA D Curve MCB
    Delivery usually within 2 - 3 working days *
    SKU: MT10D402
    £6.68
    FuseBox MT10D502 50A Double Pole 10kA D Curve MCB

    FuseBox MT10D502 50A Double Pole 10kA D Curve MCB
    Delivery usually within 2 - 3 working days *
    SKU: MT10D502
    £6.95
    FuseBox MT10D632 63A Double Pole 10kA D Curve MCB

    FuseBox MT10D632 63A Double Pole 10kA D Curve MCB
    Delivery usually within 2 - 3 working days *
    SKU: MT10D632
    £6.95
    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
    4 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

    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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