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Circuit Protection

Showing 941–960 of 2392 results

Live Electrical RI432 4 Pole 32A IP65 Rotary Isolator Switch

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Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: RI432
£12.30

Live Electrical | CB120C | 10kA | Curve C | 1 Pole Bi-Directional MCB | 20A

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Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: CB120C
£2.95

Fusebox SCO125SWB 125A Changeover Switch And Busbar

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Estimated Lead Time:
Usually 2 - 4 Working Days
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SKU: SCO125SWB
£19.50

Live Electrical | CB332B | 10kA | Curve B | 3 Pole Bi-Directional MCB | 32A

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Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: CB332B
£8.37

Live Electrical | CB116C | 10kA | Curve C | 1 Pole Bi-Directional MCB | 16A

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Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: CB116C
£2.95

WCED Twin Screw 100A DP Main Switch

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Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WME2100
£4.24

WCED 2 Pole 100A Main Switch

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Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WMS2100
£3.74

WCED WMCUSP440C 3 Phase SPD with 40A Curve C 4 Pole MCB

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Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WMCUSP440C
£51.38

WCED Type A High Immunity Curve C 32A 30mA RCBO

Available to Order
Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WRB132C-030
£9.00
Live Electrical LEVB240 2 Way Metal Enclosure c/w 40A Type A Double Pole RCBO 1Live Electrical LEVB240 2 Way Metal Enclosure c/w 40A Type A Double Pole RCBO 2

2 Way Metal Enclosure c/w 40A Type A Double Pole RCBO

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Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: LEVB240
£29.50 £22.50

WCED | WMIP40BSP | IP65 Metal EV Protection Unit | Type A 40A B Curve RCBO & Type 2 SPD

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Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WMIP40BSP
Quantity Discount
Quantity Price
1 £44.78
2+ £43.88
3+ £42.54
5+ £41.42
10+ £40.30
£44.78

PME / PEN Fault Detection IP65 Unit 8 Mod c/w C40 RCBO /4P63A Contactor SPD & PME Relays

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Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WPEPME08/SP/C40
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Quantity Price
1 £90.72
2+ £88.00
3+ £86.18
£90.72

WCED Whitecliffe WSPDTE-4 4 Pole 4 Module Type 1+2 SPD Surge Protection Device

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Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WSPDTE-4
£78.59

WCED Consumer Unit Kit with SPD and 9 RCBOs

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Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WME14/SP/9RCBO
£116.62

WCED WAC4P40 – 4 Pole 40A 4NO 230V AC Modular Contactor

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Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WAC4P40
Quantity Discount
Quantity Price
1 - 2 £14.16
3+ £13.81
5+ £13.45
10+ £13.10
20+ £12.74
£14.16

Live Electrical ENC465 IP65 4 Way Plastic Enclosure

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Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: ENC465
£9.15

WCED | WMCUSP463C | 3 Phase SPD | 63A C Curve 4 Pole MCB

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Estimated Lead Time:
Usually 1 - 2 Working Days
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SKU: WMCUSP463C
£61.65

Live Electrical MCS125A Metal 125A Changeover Switch

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Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: MCS125A
£34.50

Live Electrical | TPN06-125S | 125A TP&N Distribution Board | 4P Main Switch | Type 2 SPD | 6 Way

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Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: TPN06-125S
£135.16

Live Electrical | AFD32B | AFDD with Type A RCBO | 6kA 30mA | B32

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: AFD32B
£66.14

Showing 941–960 of 2392 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.