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Circuit Protection

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SPD Surge Protection Devices (109)

Niglon RCBO1-40/30SSAX 40A Curve B 30mA A Type RCBO

Niglon RCBO1-40/30SSAX 40A Curve B 30mA A Type RCBO

79 In stock
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SKU: RCBO1-40/30SSAX
£13.20
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Niglon RCBO1-16/30SAX2 16A RCBO – Compact, Bi-Directional, Type A, Curve B, 30mA, 6kA RCBO.

Niglon RCBO1-16/30SAX2 16A Curve B 30mA Bi-Directional A Type RCBO

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SKU: RCBO1-16/30SAX2
£15.18
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Gewiss GW70443P 40A Rotary Isolator Switch with red emergency knob, IP66/IP67/IP69-rated enclosure, and lockable 4-pole safety design for industrial and outdoor use. Gewiss GW70443P 40A Rotary Isolator Switch with red emergency knob, IP66/IP67/IP69-rated enclosure, and lockable 4-pole safety design for industrial and outdoor use.

Gewiss GW70443P 40A 4-Pole IP66/IP67/IP69 Rotary Isolator Switch

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SKU: GW70443P
£20.87
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FuseBox F2010MX 10 Way RCBO Consumer Unit Kit with Surge Protection, RCBOs, Gland and Blanks FuseBox F2010MX/KIT8 10 Way SPD Consumer Unit Kit with 8 RCBOs

FuseBox F2010MX/KIT8 10 Way SPD Consumer Unit Kit with 8 RCBOs

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SKU: F2010MX/KIT8
£139.78
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FuseBox F2014MX/KIT12 14 Way SPD Consumer Unit Kit with 12 RCBOs FuseBox F2014MX/KIT12 14 Way SPD Consumer Unit Kit with 12 RCBOs

FuseBox F2014MX/KIT12 14 Way SPD Consumer Unit Kit with 12 RCBOs

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SKU: F2014MX/KIT12
£183.00
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FuseBox F2020MX/KIT15 20 Way SPD Consumer Unit Kit with 15 RCBOs FuseBox F2020MX/KIT15 20 Way SPD Consumer Unit Kit with 15 RCBOs

FuseBox F2020MX/KIT15 20 Way SPD Consumer Unit Kit with 15 RCBOs

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SKU: F2020MX/KIT15
£218.37
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Garo GCS8EV40PME IP65 EV Consumer Unit with B40A Type A RCBO, PEN Fault Detection & Surge Protection Garo GCS8EV40PME IP65 EV Consumer Unit with B40A Type A RCBO, PEN Fault Detection & Surge Protection

Garo GCS8EV40PME IP65 EV Consumer Unit with B40A Type A RCBO, PEN Fault Detection & Surge Protection

4 In stock
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SKU: GCS8EV40PME
£115.00
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Hager JK104BA3 Hager JK104BA3 125A 4 Way TPN Board with Plain Door (Amendment 3)

Hager JK104BA3 125A 4 Way TPN Board with Plain Door (Amendment 3)

1 In stock
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SKU: JK104BA3
£148.90
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Hager JK11003S Hager JK11003S 100A 3 Pole Mains Switch Incomer Kit 1Hager JK11003S Hager JK11003S 100A 3 Pole Mains Switch Incomer Kit 2

Hager JK11003S 100A 3 Pole Mains Switch Incomer Kit

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SKU: JK11003S
£42.49
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Hager JK030BEB Earth Bar - 2 x 15 Connections

Hager JK030BEB Earth Bar – 2 x 15 Connections

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SKU: JK030BEB
£60.54
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Hager JK01DC Door Document Clip (Pack of 10)

Hager JK01DC Door Document Clip (Pack of 10)

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SKU: JK01DC
£13.73
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Hager JK1/2TOPSHROUD Busbar Stack Top Shroud

Hager JK1/2TOPSHROUD Busbar Stack Top Shroud

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SKU: JK1/2TOPSHROUD
£16.26
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Hager JK1/INCOMSHROUD Main Incomer Shroud

Hager JK1/INCOMSHROUD Main Incomer Shroud

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SKU: JK1/INCOMSHROUD
£24.70
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Hager JK1/NEUTRALSHROUD Neutral Clear Shroud

Hager JK1/NEUTRALSHROUD Neutral Clear Shroud

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SKU: JK1/NEUTRALSHROUD
£4.94
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Hager JK100HK JK1 Horizontal Mechanical Connecting Kit

Hager JK100HK JK1 Horizontal Mechanical Connecting Kit

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SKU: JK100HK
£36.62
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Hager JK222PK Door Lock Kit

Hager JK222PK Door Lock Kit

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£17.59
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Hager VML402AH 2 Way 40A Type A RCD Garage Consumer Unit Hager VML402AH 2 Way 40A Type A RCD Garage Consumer Unit

Hager VML402AH 2 Way 40A Type A RCD Garage Consumer Unit

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SKU: VML402AH
£49.50
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Hager VM01SP Hager VM01SP Rear Stand Off Plate

Hager VM01SP Rear Stand Off Plate

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SKU: VM01SP
£33.74
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Hager ADA106U Type A RCBO

Hager ADA160U RCBO 10kA C-10A 30mA Type A

9 In stock
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SKU: ADA160U
£30.99
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Live Electrical TPN16-125 Live Electrical TPN16-125 125A 16 Way TPN Distribution Board 1Live Electrical TPN16-125 Live Electrical TPN16-125 125A 16 Way TPN Distribution Board 2

Live Electrical TPN16-125 125A 16 Way TPN Distribution Board

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SKU: TPN16-125
£224.90
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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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