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Circuit Protection

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SPD Surge Protection Devices (110)

FuseBox MT10B253 FuseBox MT10B253 25A Triple Pole 10kA B Curve MCB

FuseBox MT10B253 25A Triple Pole 10kA B Curve MCB

6 In stock
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SKU: MT10B253
£9.51
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FuseBox MT10C063 FuseBox MT10C063 6A Triple Pole 10kA C Curve MCB

FuseBox MT10C063 6A Triple Pole 10kA C Curve MCB

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SKU: MT10C063
£9.51
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FuseBox MT10D163 FuseBox MT10D163 16A Triple Pole 10kA D Curve MCB

FuseBox MT10D163 16A Triple Pole 10kA D Curve MCB

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SKU: MT10D163
£9.51
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FuseBox MT10D203 FuseBox MT10D203 20A Triple Pole 10kA D Curve MCB

FuseBox MT10D203 20A Triple Pole 10kA D Curve MCB

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SKU: MT10D203
£9.51
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FuseBox RTA1001004 Fusebox RTA1001004 100A 4 Pole 100MA Type A RCD 1FuseBox RTA1001004 Fusebox RTA1001004 100A 4 Pole 100MA Type A RCD 2

Fusebox RTA1001004 100A 4 Pole 100mA Type A RCD

8 In stock
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SKU: RTA1001004
£28.90
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FuseBox IT1254 Fusebox IT1254 125A 4 Pole Main Switch

Fusebox IT1254 125A 4 Pole Main Switch

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SKU: IT1254
£20.15
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FuseBox IT1253N Fusebox IT1253N 125A 3 Pole Main Switch

Fusebox IT1253N 125A 3 Pole Main Switch

11 In stock
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SKU: IT1253N
£21.00
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FuseBox IT1003U Fusebox IT1003U 100A 3 Pole Din Rail Connector

Fusebox IT1003U 100A 3 Pole Din Rail Connector

11 In stock
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SKU: IT1003U
£16.90
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FuseBox IT1253U FuseBox IT1253U 125A 3 Pole DIN Rail Mounted Connector

FuseBox IT1253U 125A 3 Pole DIN Rail Mounted Connector

11 In stock
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SKU: IT1253U
£18.90
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FuseBox IT1254U FuseBox IT1254U 125A 4 Pole DIN Rail Mounted Connector

FuseBox IT1254U 125A 4 Pole DIN Rail Mounted Connector

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SKU: IT1254U
£24.90
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Live Electrical PEN4 Live Electrical 4 Way Plastic Enclosure

Live Electrical PEN4 4 Way Plastic Enclosure

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SKU: PEN4
£6.75
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Live Electrical RD463-100 Live Electrical 4 Pole Type A 63A 100mA RCD

Live Electrical RDA463-100 4 Pole Type A 63A 100mA RCD

2 In stock
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SKU: RDA463-100
£18.99
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Surge Devices SY2-C40XLEDENCM Surge Devices Type 2 20kA/40kA 3 Phase SPD with LED Indication & 3P 32A MCB in IP65 Polycarbonate Enclosure

Surge Devices SY2-C40XLEDENCM Type 2 3 Phase SPD with IP65 Enclosure

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SKU: SY2-C40XLEDENCM
£217.71
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Surge Devices SPDPV600 SPD Type 2 600V DC for Solar/PV Installations

SPD Type 2 600V DC for Solar/PV Installations

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SKU: SPDPV600
£77.49

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Surge Devices SPDPV1000 SPD Type 2 1000V DC for Solar/PV Installations

SPD Type 2 1000V DC for Solar/PV Installations

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SKU: SPDPV1000
£107.01

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Hager VML10810SPD Hager VML10810SPD Dual Row 8+10 Way 100A Main Switch + SPD

Hager VML10810SPD Dual Row 8+10 Way 100A Main Switch + SPD

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SKU: VML10810SPD
£193.07
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WCED Consumer Units

WCED Cable Pack Kit – Standard Live, Neutral & Earth Cable

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SKU: Cable Kit1
£2.00

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PME / PEN Fault Detection Unit IP65 Enclosure – C40A RCBO 4P 63A Contactor SPD & PME + Load Balance & KWH Meters

PME / PEN Fault Detection Unit IP65 Enclosure – C40A RCBO 4P 63A Contactor SPD & PME + Load Balance & KWH Meters

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SKU: WPEPME12/LBK
£153.02

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FuseBox EV32RAX FuseBox EV32RAX EV Charger Distribution Board FuseBox EV32RAX EV Charger Consumer Unit

FuseBox EV32RAX EV Charger Consumer Unit

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SKU: EV32RAX
£58.80
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Hager ADC906R Hager 30mA Type A 6A 6kA C Curve 1M 1P+N Bi-Directional RCBO

Hager ADC906R 30mA Type A 6A 6kA C Curve 1M 1P+N Bi-Directional RCBO

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SKU: ADC906R
£19.43
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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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