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    Circuit Protection

    Circuit Protection by Brand

    Circuit Protection by Brand (1879)

    Consumer Units

    Consumer Units (448)

    Circuit Protection Devices

    Circuit Protection Devices (1058)

    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 (173)

    Switch Gear

    Switch Gear (260)

    Street Lighting Circuit Protection

    Street Lighting Circuit Protection (13)

    WCED WME18 WCED 18 Way Metal Enclosure 1

    WCED 18 Way Metal Enclosure
    Delivery usually within 1 - 3 working days *
    SKU: WME18
    Quantity Discount
    Quantity Price
    1 - 4 £36.71
    5+ £35.79
    10+ £34.87
    20+ £33.96
    £36.71
    WCED WKB210B WCED 2 Pole 10A B Curve 10 kA MCB 1

    WCED 2 Pole 10A B Curve 10 kA MCB
    1 in stock
    This item cannot be back-ordered
    SKU: WKB210B
    Quantity Discount
    Quantity Price
    1 - 4 £6.99
    5+ £6.71
    10+ £6.54
    £6.99
    WCED WKB120D WCED 1 Pole 20A D Curve 10 kA MCB 1

    WCED 1 Pole 20A D Curve 10kA MCB
    10 in stock
    More available within 1 - 3 working days *
    SKU: WKB120D
    Quantity Discount
    Quantity Price
    1 - 4 £3.35
    5+ £3.22
    10+ £3.13
    £3.35
    Live Electrical RA210C-030 Live Electrical Double Pole Type A RCBO - Curve C - 10A 1

    Live Electrical Double Pole Type A RCBO – Curve C – 10A
    Delivery usually within 1 - 2 working days *
    SKU: RA210C-030
    £13.99
    Axiom RS254SE Axiom Rotary Isolator - 415V 25Amp 4P

    Axiom RS254SE 4 Pole 25A Rotary Isolator – 415V
    1 in stock
    This item cannot be back-ordered
    SKU: RS254SE
    £20.95
    Hager VML108SPD 8 Way Main Switch SPD Consumer Unit

    Hager VML108SPD 8 Way Main Switch SPD Consumer Unit
    Delivery usually within 1 - 3 working days *
    SKU: VML108SPD
    £74.99
    Hager VML118SPD 18 Way Main Switch SPD Consumer Unit

    Hager VML118SPD 18 Way Main Switch SPD Consumer Unit
    1 in stock
    More available within 1 - 3 working days *
    SKU: VML118SPD
    £89.95
    Hager ARR920U Hager ARR920U AFD with 30mA RCBO 20A Curve B Type A

    Hager ARR920U AFD with 30mA RCBO 20A Curve B Type A
    3 in stock
    More available within 1 - 3 working days *
    SKU: ARR920U
    £91.50
    Wago 788-516 Wago 788 Relay Module with 2 Changeover Contacts - 230V AC 8A 2.5 mm² Grey 1

    Wago 788-516 Relay Module with 2 Changeover Contacts – 230V AC 8A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 788-516
    £11.98
    FuseBox MT10D321 FuseBox MT10D321 32A Single Pole 10kA D Curve MCB

    FuseBox MT10D321 32A Single Pole 10kA D Curve MCB
    10 in stock
    More available within 2 - 3 working days *
    SKU: MT10D321
    £3.22
    FuseBox MT10D501 50A Single Pole 10kA D Curve MCB

    FuseBox MT10D501 50A Single Pole 10kA D Curve MCB
    10 in stock
    More available within 2 - 3 working days *
    SKU: MT10D501
    £3.34
    FuseBox MT10B253 FuseBox MT10B253 25A Triple Pole 10kA B Curve MCB

    FuseBox MT10B253 25A Triple Pole 10kA B Curve MCB
    3 in stock
    More available within 2 - 3 working days *
    SKU: MT10B253
    £9.51
    FuseBox MT10D203 FuseBox MT10D203 20A Triple Pole 10kA D Curve MCB

    FuseBox MT10D203 20A Triple Pole 10kA D Curve MCB
    Delivery usually within 2 - 3 working days *
    SKU: MT10D203
    £9.51
    FuseBox IT1253N Fusebox IT1253N 125A 3 Pole Main Switch

    Fusebox IT1253N 125A 3 Pole Main Switch
    11 in stock
    More available within 2 - 3 working days *
    SKU: IT1253N
    £20.08
    FuseBox IT1004U Fusebox IT1004U 100A 4 Pole Din Rail Connector

    Fusebox IT1004U 100A 4 Pole Din Rail Connector
    Delivery usually within 2 - 3 working days *
    SKU: IT1004U
    £21.59
    FuseBox IT1253U FuseBox IT1253U 125A 3 Pole DIN Rail Mounted Connector

    FuseBox IT1253U 125A 3 Pole DIN Rail Mounted Connector
    11 in stock
    More available within 2 - 3 working days *
    SKU: IT1253U
    £17.82
    FuseBox IT1254U FuseBox IT1254U 125A 4 Pole DIN Rail Mounted Connector

    FuseBox IT1254U 125A 4 Pole DIN Rail Mounted Connector
    11 in stock
    More available within 2 - 3 working days *
    SKU: IT1254U
    £23.76
    Surge Devices 10811/LED Type 1+2+3 SPD – 3-Phase Lightning Arrester for TN-S & TNC-S Systems

    Surge Devices 10811/LED Type 1+2+3 SPD – 3-Phase Lightning Arrester for TN-S & TNC-S Systems
    Delivery usually within 3 - 4 working days *
    SKU: 10811/LED
    £486.00
    Surge Devices 10811/LEDENC Surge Devices 10811/LEDENC 3 Phase SPD Type 1+2+3 100kA with Full Mode Protection & LED Indication

    Surge Devices 10811/LEDENC Type 1+2+3 SPD – 3-Phase Surge Arrester in IP65 Polycarbonate Enclosure for TN-S & TNC-S Systems
    Delivery usually within 3 - 4 working days *
    SKU: 10811/LEDENC
    £516.00
    Surge Devices 800914ENC Surge Devices Type 1+2+3 100kA 3 Phase SPD with Window Indication and Pluggable Modules in IP65 Polycarbonate Enclosure

    Surge Devices 800914ENC Type 1+2+3 SPD – 3-Phase Lightning Arrester in IP65 Enclosure
    Delivery usually within 3 - 4 working days *
    SKU: 800914ENC
    £465.00

    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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