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Circuit Protection

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Live Electrical | DCM206C | 2 Pole DC MCB | 500V | 6kA | C Curve | 6A

2 In Stock
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SKU: DCM206C
£9.50

Hager | ADC920R | 1P+N | 6kA | 30mA | C Curve | Type A Bidirectional RCBO | 20A

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SKU: ADC920R
£19.70

Live Electrical MS1100D 1 Pole 100A Double Terminal Main Switch

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SKU: MS1100D
£3.02

Live Electrical LS-MB10 10 Module LSMC Mounting Bracket

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SKU: LS-MB10
£7.52

WCED | WKC310C | 10kA | Curve C | 3 Pole Bi-Directional MCB | 10A

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SKU: WKC310C
£8.61

Niglon | PCU1008M | 8 Way Protego Consumer Unit | 100A Main Switch | Metal

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SKU: PCU1008M
£34.33

Niglon | PCU0402M | 2 Way Protego Consumer Unit | 100A Main Switch | Metal

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SKU: PCU0402M
£23.88

Niglon PMCB10C3-32 32A 3 Pole 10kA Curve C MCB

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SKU: PMCB10C3-32
£10.51

Niglon PMCB10B1-06 6A Single Pole 10kA Curve B MCB

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SKU: PMCB10B1-06
£3.42

Garo GCUT8 8 Module IP65 Plastic Enclosure

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SKU: GCUT8
£20.41
FuseBox R3PN10B1630BD Curve B 3 Phase 16A RCBOFuseBox 3 Phase RCBO - Front

FuseBox | R3PN10B1630BD | 10kA | 30mA | Curve B | 3P+N Bi-Directional RCBO | 16A

11 In Stock
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SKU: R3PN10B1630BD
£64.72 £59.90
FuseBox R3PN10B2030BD Curve B 3 Phase 20A RCBOFuseBox 3 Phase RCBO - Front

FuseBox | R3PN10B2030BD | 10kA | 30mA | Curve B | 3P+N Bi-Directional RCBO | 20A

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SKU: R3PN10B2030BD
£64.72 £59.90

Switchtec SMC-2540-240 25A Contactor – 4NO 240V AC Coil

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SKU: SMC-2540-240
£16.34

Live Electrical | AMR110B-100 | 100mA Bi-Directional Type A Compact RCBO 10A B Curve

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SKU: AMR110B-100
£9.99
Live Electrical CN140B 2P Bi-Directional B Curve 40A MCBLive Electrical | CN140B | 2P Bi-Directional MCB | B Curve | 40A | For SRN Consumer Units

Live Electrical | CN140B | 2P Bi-Directional MCB | B Curve | 40A | For SRN Consumer Units

3 In Stock
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SKU: CN140B
£5.99

Live Electrical | LSMC840SP-P | 3 Phase EV Charger Consumer Unit | SPD | B40A Type A RCBO

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SKU: LSMC840SP-BP
£80.14

Live Electrical | LHP0540-MS | 5 Way Heat Pump Consumer Unit | 40A B-HP RCD | C16 MCB | SPD

8 In Stock
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SKU: LHP0540-MS
£120.00

Hager | VMGROM | 38mm Open Grommet | Single

50 In Stock
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SKU: VMGROM
£0.99

Live Electrical | CB350D | 10kA | Curve D | 3 Pole Bi-Directional MCB | 50A

1 In Stock
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SKU: CB350D
£9.07

Hager VML11010 Dual Row 10+10 Way Main Switch Consumer Unit

1 In Stock
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SKU: VML11010
£141.69

Showing 621–640 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.