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Circuit Protection

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FuseBox MT10B631 FuseBox MT10B631 63A Single Pole 10kA B Curve MCB

FuseBox MT10B631 63A Single Pole 10kA B Curve MCB

16 In stock
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SKU: MT10B631
£3.34
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FuseBox MT10C161 FuseBox MT10C161 16A Single Pole 10kA C Curve MCB

FuseBox MT10C161 16A Single Pole 10kA C Curve MCB

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SKU: MT10C161
£3.22
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FuseBox MT10C162 FuseBox MT10C162 16A Double Pole 10kA C Curve MCB

FuseBox MT10C162 16A Double Pole 10kA C Curve MCB

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SKU: MT10C162
£6.68
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FuseBox MT10B503 FuseBox MT10B503 50A Triple Pole 10kA B Curve MCB

FuseBox MT10B503 50A Triple Pole 10kA B Curve MCB

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SKU: MT10B503
£9.88
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FuseBox MT10B633 FuseBox MT10B633 63A Triple Pole 10kA B Curve MCB

FuseBox MT10B633 63A Triple Pole 10kA B Curve MCB

11 In stock
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SKU: MT10B633
£9.88
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FuseBox MT10C253 FuseBox MT10C253 25A Triple Pole 10kA C Curve MCB

FuseBox MT10C253 25A Triple Pole 10kA C Curve MCB

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SKU: MT10C253
£9.51
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FuseBox RTA105030C Fusebox RTA105030C Single Pole Type A C Curve RCBO

Fusebox RTA105030C 50A Single Pole Type A C Curve RCBO

9 In stock
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SKU: RTA105030C
£17.44
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FuseBox RTA1000304 Fusebox RTA1000304 100A 4 Pole 30MA Type A RCD

Fusebox RTA1000304 100A 4 Pole 30mA Type A RCD

8 In stock
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SKU: RTA1000304
£28.90
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FuseBox RTA1001004S FuseBox RTA1001004S 4P Type A RCD 100A 100mA

FuseBox RTA1001004S 4P Type A RCD 100A 100mA

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SKU: RTA1001004S
£31.00
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FuseBox INC632 FuseBox INC632 63A 2 Pole 2 Module Contactor 1

FuseBox INC632 63A 2 Pole Normally Open 230V AC Modular Contactor

4 In stock
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SKU: INC632
£12.95
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Live Electrical TPN14-125S Live Electrical 125 Amp 14 Way TPN Distribution Board with SPD 1Live Electrical TPN14-125S Live Electrical 125 Amp 14 Way TPN Distribution Board with SPD 2

Live Electrical TPN14-125S 125 Amp 14 Way TPN Distribution Board with SPD

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SKU: TPN14-125S
£229.90
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Axiom RS634 Axiom Rotary Isolator IP65 - 30kW 415V 63Amp 3P + 1 Aux

Axiom RS634 3 Pole 63A IP65 Rotary Isolator Switch

1 In stock
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SKU: RS634
£19.90 £15.99
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WCED WCT24-100LB WCED Load Balancing Relay + CT Core 1

WLB110 Monitoring Relay

3 In stock
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SKU: WCT24-100LB
£40.49
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Cobra RI/DC/25 Cobra Cable 25A DC Rotary Isolator

Cobra Cable 25A DC Rotary Isolator

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SKU: RI/DC/25
£23.10 £19.99
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Hager ADC932R Hager 30mA Type A 32A 6kA C Curve 1M 1P+N Bi-Directional RCBO

Hager ADC932R 30mA Type A 32A 6kA C Curve 1M 1P+N Bi-Directional RCBO

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SKU: ADC932R
£19.43
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FuseBox RTAMB10BD Bi-Directional Mini RCBO 10A B Curve 30mA Type A

FuseBox RTAMB10BD Bi-Directional Mini RCBO 10A B Curve 30mA Type A

30 In stock
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SKU: RTAMB10BD
£14.95
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FuseBox A65E06MWH IP65 6 Way Metal Enclosure – White FuseBox A65E06MWH IP65 6 Way Metal Enclosure – White

FuseBox A65E06MWH IP65 6 Way Metal Enclosure – White

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SKU: A65E06MWH
£41.54

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Live Electrical MMGU32C-SP 4-Way EV Consumer Unit with 32A C Curve EV-Optimised RCBO, SPD, and Busbar – Indoor-Use Metal Enclosure EV Consumer Unit - Straight Open Front

Live Electrical MMGU32C-SP EV Consumer Unit with RCBO SPD & Busbar – 2P 32 C Curve Type A

11 In stock
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SKU: MMGU32C-SP
£30.99

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WCED WKC110B 10kA 1 Pole MCB Curve B 10A

WCED WKC110B 10kA 1 Pole MCB Curve B 10A

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SKU: WKC110B
£2.65

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FuseBox F2014MX/KIT12 14 Way SPD Consumer Unit Kit with 12 RCBOs FuseBox F2014MX/KIT12 14 Way SPD Consumer Unit Kit with 12 RCBOs

FuseBox F2014MX/KIT12 14 Way SPD Consumer Unit Kit with 12 RCBOs

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SKU: F2014MX/KIT12
£183.00
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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.

 

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