VAT:

Circuit Protection

Showing 481–500 of 2380 results

Fusebox FMS080 80A Main Switch Fused

5 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: FMS080
£14.95

Live Electrical SA240 2 Pole 20kA/40kA Type 2 SPD Surge Protective Device

1 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: SA240
£17.75
Deligo Photovoltaic (Solar) DC Rotary Isolator Switch - 16A

Deligo Photovoltaic (Solar) DC Rotary Isolator Switch – 16A

1 In Stock
This item cannot be back-ordered
SKU: DSRI16
£24.05 £19.99

WCED WAC4P25/24 – 4 Pole 25A 4NO 24V AC Modular Contactor

9 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WAC4P25/24
Quantity Discount
Quantity Price
1 - 2 £14.16
3+ £13.81
5+ £13.45
10+ £13.10
20+ £12.74
£14.16

Wago 788-354 Relay Module with 1 Changeover Contact for Lamp Loads – 24V DC 16A 2.5mm² Grey

11 In Stock
More available within:
Usually 3 - 5 Working Days
Read More
SKU: 788-354
£13.94

FuseBox MT10B101 10A Single Pole 10kA B Curve MCB

20 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: MT10B101
£3.22

FuseBox MT10B401 40A Single Pole 10kA B Curve MCB

14 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: MT10B401
£3.22

FuseBox MT10B403 40A Triple Pole 10kA B Curve MCB

11 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: MT10B403
£9.51

Fusebox TPNSPLFB 125A Single Phasing Conversion Kit

7 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: TPNSPLFB
£1.99

Live Electrical | RDA4100-030 | 4 Pole | Bi-Directional Type A RCD | 6kA | 30mA | 100A

1 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: RDA4100-030
£20.99
Cobra RI/DC/25 Cobra Cable 25A DC Rotary Isolator

Cobra Cable 25A DC Rotary Isolator

2 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: RI/DC/25
£23.10 £19.99

Live Electrical | CB220B | 10kA | Curve B | 2 Pole Bi-Directional MCB | 20A

2 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: CB220B
£5.89

Live Electrical | FMC10M-SP | 100A Main Switch | 7 Way Flush SPD Metal Consumer Unit

1 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: FMC10M-SP
£61.58

Unicrimp QGT3B Grommet Strip Edge Roll – 5mm x 8mm x 3m (Black)

13 In Stock
More available within:
Usually 1 - 3 Working Days
Read More
SKU: QGT3B
£2.63

Hager CDB525HP 30mA 25A RCCB 1P+N Type B HP for Heat Pumps

1 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: CDB525HP
£146.98

Niglon PMCB10C1-32 32A Single Pole 10kA Curve C MCB

4 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: PMCB10C1-32
£3.42

Fusebox F3004RA 4 Way 63A 30ma Type A RCD Consumer Unit

1 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: F3004RA
£38.44

FuseBox MT06B251 25A MCB Curve B

16 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: MT06B251
£1.95
PVC Trunking (50x50mm) for FuseBox F3015MZ / F3016M Consumer UnitPVC Trunking (50x50mm) for FuseBox F3015MZ / F3016M Consumer Unit 2

PVC Trunking (50x50mm) for FuseBox F3015MZ / F3016M Consumer Unit

2 In Stock
More available within:
Usually 1 - 3 Working Days
Read More
SKU: MAK50/50/F3015MZ
£7.95

Garo GK24-4NO – 4 Pole 24A 4NO 230V AC / 220V DC Modular Contactor

7 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: GK24-4NO
£18.97

Showing 481–500 of 2380 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.

Thousands of products in stock ready for next day delivery. Friendly and reliable service, competitive prices.

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.