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Circuit Protection

Showing 1181–1200 of 1797 results

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SPD Surge Protection Devices

SPD Surge Protection Devices (110)

Surge Devices 10812/LED Surge Devices Type 1+2+3 50kA Single Phase SPD with All/Full Mode Protection & LED Indication

Surge Devices Type 1+2+3 50kA Single Phase SPD with All/Full Mode Protection & LED Indication

Delivery usually within 1-3 working days*
SKU: 10812/LED
£369.00
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Surge Devices 800914 Surge Devices 800914 Type 1+2+3 100kA 3 Phase SPD with Window Indication and Pluggable Modules

Surge Devices 800914 Type 1+2+3 SPD – 3-Phase Lightning Arrester for TN-S & TNC-S Installations

Delivery usually within 1-3 working days*
SKU: 800914
£523.98
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Surge Devices 800912 Surge Devices Type 1+2+3 50kA Single Phase SPD with Window Indication and Pluggable Modules

Surge Devices Type 1+2+3 50kA Single Phase SPD with Window Indication and Pluggable Modules

Delivery usually within 1-3 working days*
SKU: 800912
£265.68
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Surge Devices 10020/4 Surge Devices Type 1+2+3 50kA 3 Phase Lightning and Surge Arrester with Indication

Surge Devices 10020/4 Industrial 50kA Type 1+2+3 Three Phase Surge Protection Device

Delivery usually within 1-3 working days*
SKU: 10020/4
£369.00
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Surge Devices 10020/2 Surge Devices Type 1+2+3 25kA Single Phase Lightning and Surge Arrester with Indication

Surge Devices 10020/2 Type 1+2+3 SPD for TN-S and TNC-S systems

Delivery usually within 1-3 working days*
SKU: 10020/2
£184.50
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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 1-3 working days*
SKU: 381649S
£428.04
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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 1-3 working days*
SKU: 10811/LEDENC
£619.92
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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 Type 1+2+3 50kA Single Phase SPD with All/Full Mode Protection & LED Indication in IP65 Polycarbonate Enclosure

Delivery usually within 1-3 working days*
SKU: 10812/LEDENC
£394.83
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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 Type 1+2+3 50kA Single Phase SPD with All/Full Mode Protection & LED Indication & 1P 63A MCB in IP65 Polycarbonate Enclosure

Delivery usually within 1-3 working days*
SKU: 10812/LEDENCM
£402.21
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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 1-3 working days*
SKU: 800914ENCM
£575.64
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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 Type 1+2+3 50kA Single Phase SPD with Window Indication and Pluggable Modules in IP65 Polycarbonate Enclosure

Delivery usually within 1-3 working days*
SKU: 800912ENC
£291.51
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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 800912ENCM Type 1+2+3 50kA SPD

Delivery usually within 1-3 working days*
SKU: 800912ENCM
£298.89
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Surge Devices 10020/4ENC Surge Devices Type 1+2+3 50kA 3 Phase Lightning and Surge Arrester with Indication in IP65 Polycarbonate Enclosure

Surge Devices 10020/4ENC 50kA Type 1+2+3 Three Phase SPD in IP65 Enclosure

Delivery usually within 1-3 working days*
SKU: 10020/4ENC
£394.83
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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 1-3 working days*
SKU: 10020/4ENCM
£416.97
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Surge Devices 10020/2ENC Surge Devices Type 1+2+3 25kA Single Phase Lightning and Surge Arrester with Indication in IP65 Polycarbonate Enclosure

Surge Devices 10020/2ENC Type 1+2+3 SPD – 25kA Single Phase Lightning Arrester in IP65 Enclosure

Delivery usually within 1-3 working days*
SKU: 10020/2ENC
£210.33
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Surge Devices SY12350KA4P Surge Devices Type 1+2+3 50kA 3 Phase Lightning and Surge Arrester with Window Indication

Surge Devices Type 1+2+3 50kA 3 Phase Lightning and Surge Arrester with Window Indication

Delivery usually within 1-3 working days*
SKU: SY12350KA4P
£369.00
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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 1-3 working days*
SKU: SY12325KA2P
£184.50
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Surge Devices SY12325KA2P/ENC Surge Devices SY12325KA2P/ENC

Surge Devices SY12325KA2P/ENC Type 1+2+3 SPD – 25kA Single Phase Lightning Arrester in IP65 Enclosure

Delivery usually within 1-3 working days*
SKU: SY12325KA2P/ENC
£210.33
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Surge Devices SY2-C40X Surge Devices Type 2 20kA/40kA 3 Phase SPD with Window Indication

Surge Devices Type 2 20kA/40kA 3 Phase SPD with Window Indication

Delivery usually within 1-3 working days*
SKU: SY2-C40X
£169.74
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Surge Devices SY1-C40X Surge Devices Type 2 20kA/40kA Single Phase SPD with Window Indication

Surge Devices SY1-C40X Type 2 20kA/40kA SPD with Window Indication

Delivery usually within 1-3 working days*
SKU: SY1-C40X
£84.87
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More products

Showing 1181–1200 of 1797 results

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.

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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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