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Circuit Protection

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SPD Surge Protection Devices

SPD Surge Protection Devices (107)

🛡️ Hager ARL932U AFDD with 30mA RCBO 32A – Curve B Type A with 1m Neutral Fly Lead

Hager ARL932U AFDD with 30mA RCBO 32A – Curve B Type A with 1m Neutral Fly Lead

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SKU: ARL932U
£111.00
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Niglon MFTP Multifunction Multi Voltage DIN Rail Mounted Timer

Niglon MFTP Multifunction Multi Voltage DIN Rail Mounted Timer

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SKU: MFTP
£22.34
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Niglon DOST Delay On Single Function DIN Rail Mounted Timer

Niglon DOST Delay On Single Function DIN Rail Mounted Timer

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SKU: DOST
£19.88
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Niglon TDOT True Delay Off DIN Rail Mounted Timer

Niglon TDOT True Delay Off DIN Rail Mounted Timer

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SKU: TDOT
£31.50
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Niglon VMT1 DIN Rail Mounted Voltage Monitor

Niglon VMT1 DIN Rail Mounted Voltage Monitor

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SKU: VMT1
£20.05
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Niglon VMT2 Phase Failure Relay

Niglon VMT2 Phase Failure Relay

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SKU: VMT2
£11.79
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Niglon VMT3 3 Phase Under and Overvoltage Monitor

Niglon VMT3 3 Phase Under and Overvoltage Monitor

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SKU: VMT3
£20.68
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Niglon VMT4 3 Phase Failure and Rotation Monitor

Niglon VMT4 3 Phase Failure and Rotation Monitor

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SKU: VMT4
£21.73
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Niglon DOL12230 230V 12A 5.5kW DOL Enclosed Direct On Line Starter

Niglon DOL12230 230V 12A 5.5kW DOL Enclosed Direct On Line Starter

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SKU: DOL12230
£26.73
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Niglon DOL12415 415V 12A 5.5kW DOL Enclosed Direct On Line Starter

Niglon DOL12415 415V 12A 5.5kW DOL Enclosed Direct On Line Starter

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SKU: DOL12415
£26.73
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Niglon DOL22415 415V 22A 5.5kW Enclosed Direct On Line Starter

Niglon DOL22415 415V 22A 11kW DOL Enclosed Direct On Line Starter

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SKU: DOL22415
£43.78
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Niglon DOL22230 230V 22A 5.5kW DOL Enclosed Direct On Line Starter

Niglon DOL22230 230V 22A 9kW DOL Enclosed Direct On Line Starter

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SKU: DOL22230
£43.78
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FuseBox F3023MZ 23 Way RCBO Consumer Unit With SPD

FuseBox F3023MZ 23 Way RCBO Consumer Unit With SPD

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SKU: F3023MZ
£137.09
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FuseBox F3031MZ 31 Way RCBO Consumer Unit With SPD

FuseBox F3031MZ 31 Way RCBO Consumer Unit With SPD

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SKU: F3031MZ
£164.04
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FuseBox F3047MZ 47 Way RCBO Consumer Unit With SPD

FuseBox F3047MZ 47 Way RCBO Consumer Unit With SPD

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SKU: F3047MZ
£176.77
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FuseBox F3004M 4 Way RCBO Consumer Unit

FuseBox F3004M 4 Way RCBO Consumer Unit

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SKU: F3004M
£26.24
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FuseBox F3008M 8 Way RCBO Consumer Unit

FuseBox F3008M 8 Way RCBO Consumer Unit

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SKU: F3008M
£31.45
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FuseBox F3012M 12 Way RCBO Consumer Unit

FuseBox F3012M 12 Way RCBO Consumer Unit

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SKU: F3012M
£34.54
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FuseBox F3016M 16 Way Consumer Unit

FuseBox F3016M 16 Way Consumer Unit

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SKU: F3016M
£42.95
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FuseBox F3022M 22 Way Consumer Unit

FuseBox F3022M 22 Way Consumer Unit

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SKU: F3022M
£51.35
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Showing 1761–1780 of 1808 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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