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    Circuit Protection

    Circuit Protection by Brand

    Circuit Protection by Brand (1915)

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    Street Lighting Circuit Protection (13)

    Live Electrical CZ1100B 1P 100A MCB 10kA Curve B

    Live Electrical CZ1100B 1P 100A MCB 10kA Curve B
    Out of Stock
    This item cannot be back-ordered
    SKU: CZ1100B
    £6.15
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    Live Electrical CZ1125B 1P 125A MCB 10kA Curve B

    Live Electrical CZ1125B 1P 125A MCB 10kA Curve B
    Out of Stock
    This item cannot be back-ordered
    SKU: CZ1125B
    £6.15
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    Live Electrical CZ1125C 1P 125A MCB 10kA Curve C

    Live Electrical CZ1125C 1P 125A MCB 10kA Curve C
    Delivery usually within 1 - 3 working days*
    SKU: CZ1125C
    £6.15
    Live Electrical CZ2125B 2P 125A MCB 10kA Curve B

    Live Electrical CZ2125B 2P 125A MCB 10kA Curve B
    Out of Stock
    This item cannot be back-ordered
    SKU: CZ2125B
    £12.87
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    Live Electrical CZ2125C 2P 125A MCB 10kA Curve C

    Live Electrical CZ2125C 2P 125A MCB 10kA Curve C
    Delivery usually within 1 - 3 working days*
    SKU: CZ2125C
    £12.87
    Live Electrical CZ380B 3P 80A MCB 10kA Curve B

    Live Electrical CZ380B 3P 80A MCB 10kA Curve B
    Out of Stock
    This item cannot be back-ordered
    SKU: CZ380B
    £19.31
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    Live Electrical CZ3125B 3P 125A MCB 10kA Curve B

    Live Electrical CZ3125B 3P 125A MCB 10kA Curve B
    Out of Stock
    This item cannot be back-ordered
    SKU: CZ3125B
    £19.31
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    Live Electrical CZ480B 4P 80A MCB 10kA Curve B

    Live Electrical CZ480B 4P 80A MCB 10kA Curve B
    Out of Stock
    This item cannot be back-ordered
    SKU: CZ480B
    £27.68
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    Live Electrical CZ4100B 4P 100A MCB 10kA Curve B

    Live Electrical CZ4100B 4P 100A MCB 10kA Curve B
    Out of Stock
    This item cannot be back-ordered
    SKU: CZ4100B
    £27.68
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    Live Electrical CZ4125B 4P 125A MCB 10kA Curve B

    Live Electrical CZ4125B 4P 125A MCB 10kA Curve B
    Out of Stock
    This item cannot be back-ordered
    SKU: CZ4125B
    £27.68
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    Live Electrical CZ480C 4P 80A MCB 10kA Curve C

    Live Electrical CZ480C 4P 80A MCB 10kA Curve C
    Out of Stock
    This item cannot be back-ordered
    SKU: CZ480C
    £27.68
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    Live Electrical CZ4100C 4P 100A MCB 10kA Curve C

    Live Electrical CZ4100C 4P 100A MCB 10kA Curve C
    Delivery usually within 1 - 3 working days*
    SKU: CZ4100C
    £27.68
    Live Electrical CZ4125C 4P 125A MCB 10kA Curve C

    Live Electrical CZ4125C 4P 125A MCB 10kA Curve C
    Out of Stock
    This item cannot be back-ordered
    SKU: CZ4125C
    £27.68
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    Live Electrical MDAC2P32/24V 2 Pole 32A 2NO AC Contactor/24V DC Coil

    Live Electrical MDAC2P32/24V – 2 Pole 32A 2NO 24V DC Coil Modular Contactor
    Delivery usually within 1 - 3 working days*
    SKU: MDAC2P32/24V
    £13.50
    Live Electrical MDAC4P20/24V 4 Pole 20A 4NO AC Contactor/24V DC Coil

    Live Electrical MDAC4P20/24V 4 Pole 20A 4NO AC Contactor/24V DC Coil
    Delivery usually within 1 - 3 working days*
    SKU: MDAC4P20/24V
    £14.10
    Live Electrical MDAC4P25/24V 4 Pole 25A 4NO AC Contactor/24V DC Coil

    Live Electrical MDAC4P25/24V – 4 Pole 25A 4NO 24V DC Coil Modular Contactor
    Delivery usually within 1 - 3 working days*
    SKU: MDAC4P25/24V
    £14.80
    Live Electrical MDAC4P40/24V 4 Pole 40A 4NO AC Contactor/24V DC Coil

    Live Electrical MDAC4P32/24V – 4 Pole 32A 4NO 24V DC Coil Modular Contactor
    Delivery usually within 1 - 3 working days*
    SKU: MDAC4P40/24V
    £16.90
    Live Electrical MS3125D 3 Pole 125A Double Terminal Main Switch

    Live Electrical MS3125D 3 Pole 125A Double Terminal Main Switch
    Delivery usually within 1 - 3 working days*
    SKU: MS3125D
    £10.37
    Live Electrical LS-MB04 4 Module LSMC Mounting Bracket

    Live Electrical LS-MB04 4 Module LSMC Mounting Bracket
    Delivery usually within 1 - 3 working days*
    SKU: LS-MB04
    £6.48
    Live Electrical LS-MB06 6 Module LSMC Mounting Bracket

    Live Electrical LS-MB06 6 Module LSMC Mounting Bracket
    Delivery usually within 1 - 3 working days*
    SKU: LS-MB06
    £6.80

    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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