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Circuit Protection

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Live Electrical AMR140B-100 40A RCBO with 100mA Type A protection and bi-directional design for PV installations Live Electrical AMR140B-100 100mA Bi-Directional Type A Compact RCBO 40A B Curve

Live Electrical AMR140B-100 100mA Bi-Directional Type A Compact RCBO 40A B Curve

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SKU: AMR140B-100
£9.99
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Hager VML106 6 Way RCBO Consumer Unit

Hager VML106 6 Way RCBO Consumer Unit

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SKU: VML106
£39.07
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Hager VM03CB Hager VM03CB Closed Top Wall Cable Protector Plate 1Hager VM03CB Hager VM03CB Closed Top Wall Cable Protector Plate 2

Hager VM03CB Closed Top Wall Cable Protector Plate

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SKU: VM03CB
£1.50
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Hager VM04CE Hager VM04CE Meter Tail Entry

Hager VM04CE Meter Tail Entry

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SKU: VM04CE
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Hager JK102SPD Hager JK102SPD 125A Surge Protection Kit Type 2 1

Hager JK102SPD 125A Surge Protection Kit Type 2

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SKU: JK102SPD
£247.21
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Hager SBN263

Hager SBN263 63A Double Pole Isolator

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SKU: SBN263
£32.30
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Hager ADA106U Type A RCBO

 Hager ADA156U RCBO 10kA C-6A 30mA Type A

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SKU: ADA156U
£30.99
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Hager JK108BA3 Hager JK108BA3 125A 8 Way TPN Board with Plain Door (Amendment 3)

Hager JK108BA3 125A 8 Way TPN Board with Plain Door (Amendment 3)

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SKU: JK108BA3
£187.81
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Hager JK11004S Hager JK11004S 100A 4 Pole Mains Switch Incomer Kit 1Hager JK11004S Hager JK11004S 100A 4 Pole Mains Switch Incomer Kit 2

Hager JK11004S 100A 4 Pole Mains Switch Incomer Kit

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£57.94
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Hager NCN306 MCB

Hager NDN363A 3 Pole MCB Type D 63A 10kA

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SKU: NDN363A
£40.74
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Live Electrical 18 Edition 24 Way Dual Row SPD Consumer Unit Live Electrical 18 Edition 24 Way Dual Row SPD Consumer Unit

Live Electrical 18 Edition 24 Way Dual Row SPD Consumer Unit

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SKU: MCU28M-SP
£109.00
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Live Electrical EN5050/250 IP65 Metal Enclosure, 500x500x250mm, steel construction with RAL7035 epoxy powder coat, includes galvanised mounting plate and polyurethane foamed gasket for watertight sealing.Live Electrical EN5050/250 Live Electrical Metal Enclosure IP65 H:500 x W:500 x D:250mm 2

Live Electrical EN5050/250 IP65 Metal Enclosure H:500 x W:500 x D:250mm

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£86.90
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Live Electrical EN10080/300 Live Electrical Metal Enclosure IP65 H:1000 x W:800 x D:300mm 1Live Electrical EN10080/300 Live Electrical Metal Enclosure IP65 H:1000 x W:800 x D:300mm 2

Live Electrical Metal Enclosure IP65 H:1000 x W:800 x D:300mm

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£258.39
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Live Electrical CEV463B-030 4 Pole 63A 30mA Type B RCCB Live Electrical CEV463B-030 Live Electrical 4 Pole 63A Type B RCCB 2

Live Electrical CEV463B-030 4 Pole 63A 30mA Type B RCCB

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£109.00
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Live Electrical RT280-100 Live Electrical 2 Pole Time Delay 100mA 80A RCD

Live Electrical RT280-100 2 Pole Time Delay 100mA 80A RCD

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£26.50
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WCED WME12/MS100 WCED 10 Way Main Switch RCBO Consumer Unit

WCED 8 Way Main Switch Consumer Unit

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SKU: WME10/MS100
£31.76
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WCED WMGU04/620 Metal Garage Consumer Unit - 63A Type A RCD 6A/20A B MCBs

WCED WMGU04/620 Metal Garage Consumer Unit – 63A Type A RCD 6A/20A B MCBs

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WCED WMMS/616 WCED Metal Garage Unit - 100A Main Switch 6A/16A B MCB 1WCED WMMS/616 WCED Metal Garage Unit - 100A Main Switch 6A/16A B MCB 2

WCED Metal Garage Unit – 100A Main Switch 6A/16A B MCB

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WCED WMC110B WCED Miniature Circuit Breaker 6kA Curve B - 10A 1WCED WMC110B WCED Miniature Circuit Breaker 6kA Curve B - 10A 2

WCED Miniature Circuit Breaker 6kA Curve B – 10A

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£1.53
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WCED WKB5100C-ST WCED 100A C Curve 5 Pole MCB 10kA + 230V Shunt Trip 1WCED WKB5100C-ST WCED 100A C Curve 5 Pole MCB 10kA + 230V Shunt Trip 2

WCED 100A C Curve 5 Pole MCB 10kA + 230V Shunt Trip

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SKU: WKB5100C-ST
£23.99

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Selection of Consumer Units, TPN Distribution Boards, Circuit Protection, Rotary Isolators, Meter Tails, Fused Switches and Accessories.

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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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