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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)

    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
    Surge Devices SY2-C40XLEDENC Surge Devices Type 2 20kA/40kA 3 Phase SPD with LED Indication in IP65 Polycarbonate Enclosure

    Surge Devices SY2-C40XLED/ENC Type 2+3 Three Phase SPD in IP65 Polycarbonate Enclosure
    Delivery usually within 3 - 4 working days *
    SKU: SY2-C40XLEDENC
    £162.00
    Surge Devices SY2-D/ENCM Surge Devices Type 2+3 Single Module 2P SPD with Replaceable Modules and Window Indication & 1P 32A MCB in A 2 Module Box

    Surge Devices SY2-D/ENCM Single Phase Type 2/3 Surge Protection in Enclosure with MCB
    Delivery usually within 3 - 4 working days *
    SKU: SY2-D/ENCM
    £53.30
    Surge Devices 320002 Surge Devices Type 2 Single Module 2P SPD with Replaceable Modules

    Surge Devices 320002 Single Phase Type 2/3 SPD with Remote Contact
    Delivery usually within 3 - 4 working days *
    SKU: 320002
    £39.00
    Surge Devices SP30 Surge Devices Pluggable Data Signal Line 30V SPD for 4/20mA Signals

    Surge Devices Pluggable Data Signal Line 30V SPD for 4/20mA Signals
    Delivery usually within 3 - 4 working days *
    SKU: SP30
    £58.50
    Surge Devices SP48 Surge Devices Pluggable Data Signal Line 48V SPD for 4/20mA Signals

    Surge Devices Pluggable Data Signal Line 48V SPD for 4/20mA Signals
    Delivery usually within 3 - 4 working days *
    SKU: SP48
    £58.50
    Surge Devices D-24/BNC Surge Devices Co-Axial BNC CCTV Arrester

    Surge Devices Co-Axial BNC CCTV Arrester
    Delivery usually within 3 - 4 working days *
    SKU: D-24/BNC
    £58.50
    Surge Devices SY4-POE Surge Devices Type 3 3kA/5kA 1A Cat 6 Power Over Ethernet SPD

    Surge Devices Type 3 3kA/5kA 1A Cat 6 Power Over Ethernet SPD
    Delivery usually within 3 - 4 working days *
    SKU: SY4-POE
    £84.50
    Surge Devices 630043 Surge Devices BS POE 7.5V Power Over Ethernet SPD

    Surge Devices BS POE 7.5V Power Over Ethernet SPD
    Delivery usually within 3 - 4 working days *
    SKU: 630043
    £78.00
    Surge Devices DP1LSA180 Surge Devices Single Telephone Surge Arrester for Installation Into Krone LSA Disconnection Strips

    Surge Devices Single Telephone Surge Arrester for Installation Into Krone LSA Disconnection Strips
    Delivery usually within 3 - 4 working days *
    SKU: DP1LSA180
    £14.30
    Surge Devices DP10LSA180 Surge Devices 10 Pair Telephone Surge Arrester for Installation Into Krone LSA Disconnection Strips

    Surge Devices 10 Pair Telephone Surge Arrester for Installation Into Krone LSA Disconnection Strips
    Delivery usually within 3 - 4 working days *
    SKU: DP10LSA180
    £123.50
    Surge Devices TELCO/EB Surge Devices Earth Bar for DP1LSA180

    Surge Devices Earth Bar for DP1LSA180
    Delivery usually within 3 - 4 working days *
    SKU: TELCO/EB
    £8.45
    Hager JF130VMF Hager Voltage to Meter Fuse Pack with M12 Ring Terminals for Use with 400A To 800A Panel Boards

    Hager JF130VMF Voltage to Meter Fuse Pack with M12 Ring Terminals for Use with 400A to 800A Panel Boards
    Delivery usually within 1 - 3 working days *
    SKU: JF130VMF
    £222.21
    Hager JN130VMF Hager Voltage to Meter Fuse Pack with M8 Ring Terminals for Use with The 250A JN Panel Boards

    Hager JN130VMF Voltage to Meter Fuse Pack with M8 Ring Terminals for Use with 250A JN Panel Boards
    Delivery usually within 1 - 3 working days *
    SKU: JN130VMF
    £203.68

    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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