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Circuit Protection

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FuseBox RTA101630B FuseBox RTA101630B 16A 30mA 10kA B Curve Type A RCBO

FuseBox RTA101630B 16A 30mA 10kA B Curve Type A RCBO

19 In stock
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SKU: RTA101630B
£17.44
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Live Electrical RA140B-030 Live Electrical 30mA 40A RCBO 10kA Curve B Type A

Live Electrical 30mA 40A RCBO 10kA Curve B Type A

86 In stock
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SKU: RA140B-030
£10.99
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Live Electrical CB120C Live Electrical CB120C 20A Curve C 10kA MCB 1Live Electrical CB120C Live Electrical CB120C 20A Curve C 10kA MCB 2

Live Electrical CB120C 20A Curve C 10kA MCB

24 In stock
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SKU: CB120C
£2.95
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FuseBox RTA103230B FuseBox RTA103230B 32A 30mA 10kA B Curve Type A RCBO

FuseBox RTA103230B 32A 30mA 10kA B Curve Type A RCBO

17 In stock
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SKU: RTA103230B
£17.44
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WCED WER06C-030 WCED Double Pole Type A 30mA RCBO Curve C - 6A

WCED Double Pole Type A 30mA RCBO Curve C – 40A

3 In stock
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SKU: WER40C-030
£16.80
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WSPD240KIT1 2 Pole Double Module Type SPD with Cable Links

WSPD240KIT1 2 Pole Double Module Type SPD with Cable Links

1 In stock
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SKU: WSPD240KIT1
£16.95

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WCED WSPDT2-CB 1 module 40kA 2 Pole SPD Kit

WCED WSPDT2-CB 1 module 40kA 2 Pole SPD Kit

5 In stock
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SKU: WSPDT2-CB
£25.95

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Live Electrical CB106C Live Electrical CB106C 6A Curve C 10kA MCB 1Live Electrical CB106C Live Electrical CB106C 6A Curve C 10kA MCB 2

Live Electrical CB106C 6A Curve C 10kA MCB

18 In stock
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SKU: CB106C
£2.95
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FuseBox RTAMB10 FuseBox RTAMB10 10A Mini Type A RCBO 1

FuseBox RTAMB10 10A Mini Type A RCBO

98 In stock
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SKU: RTAMB10
£13.50
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Fire Retardant Board / Consumer Unit

Fire Retardant Consumer Unit / Meter Board 18″ x 24″ ( 457 x 608mm )

11 In stock
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SKU: MB1824
£20.90
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FuseBox RTA100630B FuseBox RTA100630B 6A 30mA 10kA B Curve Type A RCBO

FuseBox RTA100630B 6A 30mA 10kA B Curve Type A RCBO

16 In stock
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SKU: RTA100630B
£17.44
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Live Electrical CB116C Live Electrical CB116C 16A Curve C 10kA MCB 1Live Electrical CB116C Live Electrical CB116C 16A Curve C 10kA MCB 2

Live Electrical CB116C 16A Curve C 10kA MCB

23 In stock
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SKU: CB116C
£2.95
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Live Electrical RI432 32A Weatherproof Rotary Isolator Switch 4 Pole 1

Live Electrical RI432 4 Pole 32A IP65 Rotary Isolator Switch

1 In stock
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SKU: RI432
£12.30
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WCED WME2100 WCED Twin Screw 100A DP Main Switch 1WCED WME2100 WCED Twin Screw 100A DP Main Switch 2

WCED Twin Screw 100A DP Main Switch

37 In stock
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SKU: WME2100
£4.56

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WCED WMIP40BSP IP65 Metal A Type 40A B Curve RCBO EV Protection Unit Plus Surge Protection 1

IP65 Metal A Type 40A B Curve RCBO EV Protection Unit Plus Surge Protection

18 In stock
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SKU: WMIP40BSP
£49.99

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Live Electrical 63A Fuse

Live Electrical 63A Fuse

55 In stock
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SKU: FU63A22
£1.99
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Live Electrical SPC100 Live Electrical Single Pole 100A Copper Busbar 1m 16mm² 54 Pin 1

Live Electrical Single Pole 100A Copper Busbar 1m 16mm² 54 Pin

20 In stock
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SKU: SPC100
£9.60
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Live Electrical TPC100 Live Electrical Triple Pole 100A Copper Busbar 1m 16mm² 54 Pin 1

Live Electrical Triple Pole 100A Copper Busbar 1m 16mm² 54 Pin

48 In stock
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SKU: TPC100
£21.04
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Live Electrical MCS125A Live Electrical Metal 125A Changeover Switch Box

Live Electrical MCS125A Metal 125A Changeover Switch

1 In stock
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SKU: MCS125A
£34.50
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Live Electrical TPN08-125S Live Electrical 125A 8 Way TPN Distribution Board SPD 1Live Electrical TPN08-125S Live Electrical 125A 8 Way TPN Distribution Board SPD 2

Live Electrical TPN08-125S 125A 8 Way TPN Distribution Board SPD

Delivery usually within 1-3 working days*
SKU: TPN08-125S
£169.00
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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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