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Circuit Protection

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Hager KDN180B Insulated Busbar 1P 80A Fork 16mm² 57M

Hager KDN180B Insulated Busbar 1P 80A Fork 16mm² – 1 Meter

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SKU: KDN180B
£32.02
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Niglon CS404 40A 440V IP65 Changeover Switch

Niglon CS404P 40A 440V IP65 Insulated Changeover Switch

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SKU: CS404P
£43.98
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Niglon NSA2-240 Type 2 Surge Protection Kit with Cables

Niglon NSA2-240 Type 2 Surge Protection Kit with Cables

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SKU: NSA2-240
£24.04
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matt:e ARD-1-63-TP-R-SPD EV Connection Centre with O-PEN® 63A TPN RCBO & SPD matt:e ARD-1-63-TP-R-SPD EV Connection Centre with O-PEN® 63A TPN RCBO & SPD

matt:e ARD-1-63-TP-R-SPD EV Connection Centre with O-PEN® 63A TPN Curve C RCBO & SPD

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SKU: ARD-1-63-TP-R-SPD
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£1,028.17
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matt:e ARD-2-32-TP-R-SPD EV Connection Centre with O-PEN, 2 x 32A TPN Type A RCBOs & Type 2 SPD matt:e ARD-2-32-TP-R-SPD EV Connection Centre with O-PEN, 2 x 32A TPN Type A RCBOs & Type 2 SPD

matt:e ARD-2-32-TP-R-SPD EV Connection Centre with O-PEN, 2 x 32A TPN Type A Curve C RCBOs & Type 2 SPD

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SKU: ARD-2-32-TP-R-SPD
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£1,151.37
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matt:e SP-EVCP-R Single-Phase EV Consumer Unit with Type A RCBO & PEN Fault Protection matt:e SP-EVCP-R Single-Phase EV Consumer Unit with Type A RCBO & PEN Fault Protection

matt:e SP-EVCP-R Single-Phase EV Consumer Unit with Type A C32 RCBO & PEN Fault Protection

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SKU: SP-EVCP-R
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£172.75
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Niglon DRT20 Mechanical Stair Timer

Niglon DRT20 Mechanical Stair Timer

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SKU: DRT20
£18.10
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Niglon M3CU14SP 100A DP Main Switch SPD Consumer Unit, 10 Usable Ways, Ideal for RCBO Setup, BS7671:2018 Compliant, 18th Edition Consumer Unit.

Niglon M3CU14SP 100A DP Main Switch 10 Way SPD Consumer Unit

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SKU: M3CU14SP
£67.34
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Niglon RCBO1-6/30SSAX 6A Curve B 30mA A Type RCBO

Niglon RCBO1-6/30SSAX 6A Curve B 30mA A Type RCBO

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SKU: RCBO1-6/30SSAX
£13.20
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Niglon RCBO1-6/30SSAX2 6A RCBO – Bi-Directional, Type A, Curve B, 30mA, 6kA, Compact 18mm RCBO.

Niglon RCBO1-6/30SAX2 6A Curve B 30mA Bi-Directional A Type RCBO

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SKU: RCBO1-6/30SAX2
£15.18
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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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Niglon RCBO1-20/30SAX2 20A RCBO – Type A, Bi-Directional, Curve B, 30mA, Compact 18mm, 6kA.

Niglon RCBO1-20/30SAX2 20A Curve B 30mA Bi-Directional A Type RCBO

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£15.18
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Gewiss GW70438P 63A Rotary Isolator Switch featuring 4 poles, a red lockable emergency stop knob, and IP66/IP67/IP69-rated enclosure for outdoor and industrial applications. Gewiss GW70438P 63A Rotary Isolator Switch featuring 4 poles, a red lockable emergency stop knob, and IP66/IP67/IP69-rated enclosure for outdoor and industrial applications.

Gewiss GW70438P 63A 4-Pole IP66/IP67/IP69 Rotary Isolator Switch

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SKU: GW70438P
£28.79
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Niglon PCU1816M Protego 100A Twin Screw Main Switch 16 Way Metal Consumer Unit

Niglon PCU1816M Protego 100A Twin Screw Main Switch 16 Way Metal Consumer Unit

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£46.98
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Niglon PSTAND02 Protego 18 Module Rear Stand Off Plate

Niglon PSTAND02 Protego 18 Module Rear Stand Off Plate

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£10.99
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Live Electrical TPNH02-100 2 Way Horizontal TP&N Distribution Board with 100A 4 Pole Main Switch Live Electrical TPNH02-100 2 Way Horizontal TP&N Distribution Board – 100A 4 Pole Main Switch

Live Electrical TPNH02-100 2 Way Horizontal TP&N Distribution Board – 100A 4 Pole Main Switch

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£58.72
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Niglon PTB12S Protego 125 12 Way TP&N Type B Three Phase Distribution Board – 125A Incomer

Niglon PTB12S Protego 125 12 Way TP&N Type B Three Phase Distribution Board – 125A Incomer

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Garo GCUT112 IP65 Enclosure – 12-module weatherproof board with hinged transparent door and dual DIN rail positions.

Garo GCUT112 Empty 12 Module IP65 Enclosure

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SKU: GCUT112
£21.70
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Live Electrical 10kA RCBO 50A Curve B Type A 30mA 1P+N

Live Electrical 10kA RCBO 50A Curve B Type A 30mA 1P+N

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SKU: RA150B-030
£10.99
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FuseBox F3011MZ 11 Way RCBO Consumer Unit With SPD F3011MZ FuseBox consumer unit with cover removed, angled to show internal layout

FuseBox F3011MZ 11 Way RCBO Consumer Unit With SPD

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SKU: F3011MZ
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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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