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Circuit Protection

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Hager NDN306A 3 Pole MCB Type D 6A 10kA

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Usually 2 - 4 Working Days
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SKU: NDN306A
£41.68

Hager NDN316A 3 Pole MCB Type D 16A 10kA

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SKU: NDN316A
£40.49

Hager NDN340A 3 Pole MCB Type D 40A 10kA

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SKU: NDN340A
£41.68

Live Electrical EN6060/200 IP65 Metal Enclosure H:600 x W:600 x D:200mm

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Usually 2 - 3 Working Days
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SKU: EN6060/200
£88.43

Live Electrical SPB1NC N/C Emergency Stop Switch

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SKU: SPB1NC
£5.95

WCED | WMC150C | 6kA | Curve C | 1 Pole Bi-Directional MCB | 50A

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SKU: WMC150C
£1.37

WCED Metal Dual 100A Type A RCD Consumer Unit – 12 Usable Way

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SKU: WME18100TR
£77.66

WCED Metal Dual 100A Type A RCD SPD Consumer Unit – 14 Usable Way

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SKU: WME22100TR/SP
£98.24

Fusebox TPN16FB 16 Way 125A Three Phase Board

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Usually 2 - 4 Working Days
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SKU: TPN16FB
£238.40

Live Electrical ENC0865 IP65 8 Way Enclosure

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Usually 2 - 3 Working Days
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SKU: ENC0865
£22.35

Live Electrical | RDA480-100 | 4 Pole | Bi-Directional Type A RCD | 6kA | 100mA | 80A

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SKU: RDA480-100
£19.99

Surge Devices 10812/LED 50kA Type 1+2+3 Single Phase SPD with LED Indication

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SKU: 10812/LED
£243.00

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

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SKU: 10020/4ENC
£330.00

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

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SKU: 10020/2ENC
£174.00

Surge Devices 10020/2ENCM Type 1+2+3 SPD – Single-Phase 25kA Lightning Arrester in IP65 Enclosure with 63A MCB

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SKU: 10020/2ENCM
£180.00

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

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SKU: SY12325KA2P/ENC
£174.00

Surge Devices SY2-D/ENC Single Phase Type 2/3 SPD in Enclosure

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SKU: SY2-D/ENC
£46.80

Surge Devices 320002/ENC Type 2/3 SPD in IP65 Enclosure

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SKU: 320002/ENC
£50.05

Surge Devices LSPDPV600 Type 1+2 PV SPD for 600V Solar Installations

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Usually 3 - 4 Working Days
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SKU: LSPDPV600
Quantity Discount
Quantity Price
1 £96.00
2+ £94.08
3+ £93.12
£96.00

Hager ECM140D 1 Phase kWh Meter Direct 40A 1M MBUS MID

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Usually 2 - 4 Working Days
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SKU: ECM140D
£113.44

Showing 1481–1500 of 2392 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.