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Circuit Protection

Circuit Protection by Brand

Circuit Protection by Brand (1941)

Consumer Units

Consumer Units (477)

Circuit Protection Devices

Circuit Protection Devices (1068)

EV Circuit Protection

EV Circuit Protection (109)

SPD Surge Protection Devices

SPD Surge Protection Devices (124)

Three Phase Distribution Boards

Three Phase Distribution Boards (93)

Switch Fuses - Isolators

Switch Fuses - Isolators (176)

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Switch Gear (266)

Street Lighting Circuit Protection

Street Lighting Circuit Protection (13)

Showing 2241–2260 of 2370 results

WAGO 879-3040 Energy Meter

WAGO | 879-3040 | Energy Meter MID26 3 Phase CT 1A/5A | Modbus & M-Bus
Available to Order
Estimated Lead Time:
Usually 3 - 5 Working Days
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SKU: 879-3040
£225.25
WAGO 879-3020 Energy MeterMID Approved 3-Phase Direct Measurement up to 65A

WAGO | 879-3020 | Energy Meter MID 65A 3 Phase Direct Connection | Modbus & M-Bus
Available to Order
Estimated Lead Time:
Usually 3 - 5 Working Days
Read More
SKU: 879-3020
£208.25
WAGO 879-3000 Energy MeterWAGO 879-3000 Energy Meter

WAGO | 879-3000 | Energy Meter MID24 65A 3 Phase Direct Connection | Modbus & M-Bus
Available to Order
Estimated Lead Time:
Usually 3 - 5 Working Days
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SKU: 879-3000
£208.25
Timeguard IS3N-32AC 32A 3P IP66 Rotary Isolator Switch

Timeguard | IS3N-32AC | 32A 3P IP66 | Rotary Isolator Switch
3 In Stock
More available within:
Usually 1 - 3 Working Days
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SKU: IS3N-32AC
£9.75
Timeguard IS4N-20AC 20A 4P IP66 Rotary Isolator Switch

Timeguard | IS4N-20AC | 20A 4P IP66 | Rotary Isolator Switch
3 In Stock
More available within:
Usually 1 - 3 Working Days
Read More
SKU: IS4N-20AC
£9.75
Timeguard IS4N-40AC 40A 4P IP66 Rotary Isolator Switch

Timeguard | IS4N-40AC | 40A 4P IP66 | Rotary Isolator Switch
Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
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SKU: IS4N-40AC
£13.65
Timeguard IS4N-63AC 63A 4P IP66 Rotary Isolator Switch

Timeguard | IS4N-63AC | 63A 4P IP66 | Rotary Isolator Switch
6 In Stock
More available within:
Usually 1 - 3 Working Days
Read More
SKU: IS4N-63AC
£16.25
Timeguard IS4N-100AC 100A 4P IP66 Rotary Isolator Switch

Timeguard | IS4N-100AC | 100A 4P IP66 | Rotary Isolator Switch
1 In Stock
More available within:
Usually 1 - 3 Working Days
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SKU: IS4N-100AC
£36.40
Hager HR510 Earth Leakage Relay

Hager | HR510 | Earth Leakage Relay Type A | 0.03–10A Adjustable Trip
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: HR510
£332.53
Hager MM508N Motor Protection Circuit Breaker

Hager | MM501N | Motor Protection Circuit Breaker | 3P 0.1–0.16A
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: MM501N
£137.05
Hager MM508N Motor Protection Circuit Breaker

Hager | MM508N | Motor Protection Circuit Breaker | 3P 2.5–4A
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: MM508N
£106.19
Hager MM509N Motor Protection Circuit Breaker

Hager | MM509N | Motor Protection Circuit Breaker | 3P 4–6.3A
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: MM509N
£112.55
Hager MM510N Motor Protection Circuit Breaker

Hager | MM510N | Motor Protection Circuit Breaker | 3P 6.3–10A
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: MM510N
£113.62
Hager MZ520N Auxiliary Contact

Hager | MZ520N | Auxiliary Contact 1NC+1NO for Motor Starter
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: MZ520N
£28.08
Hager MZ528N Under Voltage Release

Hager | MZ528N | Under Voltage Release | 230V AC for Motor Starter
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
Read More
SKU: MZ528N
£34.82
Hager MZ529N Under Voltage Release

Hager | MZ529N | Under Voltage Release 400V AC for Motor Starter
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
Read More
SKU: MZ529N
£31.79
Hager MZ527N Alarm Contact

Hager | MZ527N | Alarm Contact 2CO for Motor Starter
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
Read More
SKU: MZ527N
£21.94
Hager MZ530N Emergency Stop Button

Hager | MZ530N | IP66 | External Emergency Stop Button
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
Read More
SKU: MZ530N
£34.81
Axiom SF32N 32A 415V TPN Switch Fuse

Axiom | SF32N | 32A 415V IP54 | Three Phase Switch Fuse
Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
Read More
SKU: SF32N
£75.91
Axiom SF100N 100A 415V TPN Switch Fuse

Axiom | SF100N | 100A 415V IP54 | Three Phase Switch Fuse
Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
Read More
SKU: SF100N
£151.24

Showing 2241–2260 of 2370 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.

 






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