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Circuit Protection

Showing 121–140 of 2483 results

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

11 In Stock
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SKU: DPC100
£11.36

WCED | WMC163B | 6kA | Curve B | 1 Pole Bi-Directional MCB | 63A

3 In Stock
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SKU: WMC163B
£1.37

Live Electrical | SPV240/1 | 2-Pole | Type 2 DC Surge Device | For Circuits up to 600V

5 In Stock
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SKU: SPV240/1
£15.42

FuseBox | RTA065030B | 6kA | 30mA | Curve B | Type A RCBO | 50A

76 In Stock
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SKU: RTA065030B
£9.99
FuseBox RTA102030B 20A 30mA 10kA B Curve Type A RCBOFuseBox | RTA102030B | 10kA | 30mA | Curve B | Type A RCBO | 20A

FuseBox | RTA102030B | 10kA | 30mA | Curve B | Type A RCBO | 20A

23 In Stock
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SKU: RTA102030B
£15.99 £14.85

FuseBox | RTAMB40BD | 30mA | Curve B | Type A Bi-Directional Mini RCBO | 40A

17 In Stock
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SKU: RTAMB40BD
£14.34
FuseBox 11 Way SPD Consumer Unit Kit with 8 RCBOsFuseBox F3011MZ 11 Way SPD Consumer Unit Kit – with 8 RCBOs 2

FuseBox | F3011MZ | 11 Way SPD Consumer Unit Kit | 8 RCBOs

In Stock
SKU: F3011MZ/8RCBO
£143.79 £141.18

Live Electrical 10kA RCBO 40A Curve B Type A 30mA 1P+N

1 In Stock
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SKU: RA140B-030
£10.99
FuseBox F3015MZ 15 Way SPD Consumer Unit Kit – with 12 RCBOsComplete Kit for Fast Installation – Populated FuseBox 15 Way Consumer Unit

FuseBox | F3015MZ | 15 Way SPD Consumer Unit Kit | 12 RCBOs

In Stock
SKU: F3015MZ/12RCBO
£187.19 £183.78

WCED | WME08/HPRC40C | Heat Pump Consumer Unit | 40A Type B HP RCD | 1 x 16A MCB | 2 × 16A RCBOs | SPD

3 In Stock
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SKU: WME08/HPR40C
Quantity Discount
Quantity Price
1 - 2 £150.73
3+ £144.70
5+ £138.67
£150.73

FuseBox MT06C321 32A MCB Curve C

10 In Stock
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SKU: MT06C321
£1.95

Live Electrical | CB110B | 10kA | Curve B | 1 Pole Bi-Directional MCB | 10A

14 In Stock
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SKU: CB110B
£2.95

Live Electrical MAC2P32 – 2 Pole 32A 2NO 230V AC Modular Contactor

4 In Stock
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SKU: MAC2P32
£9.79

FuseBox | RTAMC16BD | 30mA | Curve C | Type A Bi-Directional Mini RCBO | 16A

9 In Stock
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SKU: RTAMC16BD
£14.34

MCB Type Terminal Block 100A

5 In Stock
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SKU: TBL100
£2.50
FuseBox RTA101030B 10A 30mA 10kA B Curve Type A RCBOFuseBox | RTA101030B | 10kA | 30mA | Curve B | Type A RCBO | 10A

FuseBox | RTA101030B | 10kA | 30mA | Curve B | Type A RCBO | 10A

3 In Stock
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SKU: RTA101030B
£15.99 £14.85

Live Electrical | CB106C | 10kA | Curve C | 1 Pole Bi-Directional MCB | 6A

14 In Stock
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SKU: CB106C
£2.95
FuseBox RTAMB25 25A Mini Type A RCBOFuseBox RTAMB25 25A Mini Type A RCBO 2

FuseBox RTAMB25 25A Mini Type A RCBO

19 In Stock
This item cannot be back-ordered
SKU: RTAMB25
£13.50 £12.49

WCED Double Pole Type A 30mA RCBO Curve C – 32A

6 In Stock
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SKU: WER32C-030
£15.09
FuseBox RTA103230C 32A 10kA 30mA C Curve Type A RCBOFuseBox | RTA103230C | 10kA | 30mA | Curve C | Type A RCBO | 32A

FuseBox | RTA103230C | 10kA | 30mA | Curve C | Type A RCBO | 32A

17 In Stock
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SKU: RTA103230C
£15.99 £14.85

Showing 121–140 of 2483 results

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.