Circuit Protection

Circuit Protection by Brand (1915)

Circuit Protection Devices (1069)

SPD Surge Protection Devices (128)

Three Phase Distribution Boards (93)

Switch Fuses - Isolators (178)

Street Lighting Circuit Protection (13)

Niglon DOL12230 230V 12A 5.5kW DOL Enclosed Direct On Line Starter

SKU: DOL12230

£26.73

Niglon DOL22415 415V 22A 5.5kW Enclosed Direct On Line Starter

Niglon DOL22415 415V 22A 11kW DOL Enclosed Direct On Line Starter

SKU: DOL22415

£43.78

Niglon DOL22230 230V 22A 5.5kW DOL Enclosed Direct On Line Starter

Niglon DOL22230 230V 22A 9kW DOL Enclosed Direct On Line Starter

SKU: DOL22230

£43.78

FuseBox F3016M 16 Way Consumer Unit

8 In Stock

SKU: F3016M

£39.95

FuseBox F3048M 48 Way Triple Row RCBO Consumer Unit

SKU: F3048M

£146.92

CM-CTL Contactless Card Meter – MID Approved Prepayment Electricity Meter

SKU: CM-CTL

£156.00

IM3D-100A-NET MID Approved Three Phase Energy Meter with NET Parameter

SKU: IM3D-100A-NET

£118.95

Niglon ISM804P Metal Clad 80A 4 Pole Rotary Isolator with IP54 Enclosure Heavy-duty electrical switch disconnector.

Niglon ISM804P Metal Clad 80A 4P IP54 Rotary Isolator

SKU: ISM804P

£41.58

Niglon 1MCO/2524 24V AC 25A modular contactor with 2NC contacts and DIN rail mounting.

Niglon 1MCO/2524 – 2 Pole 25A 2NC 24V AC Modular Contactor

SKU: 1MCO/2524

£13.80

FuseBox F3008RA 8 Way 80A 30ma Type A RCD Consumer Unit

SKU: F3008RA

£44.60

Fusebox F3008RB 8 Way 63A 30ma Type B RCD Consumer Unit

SKU: F3008RB

£134.88

Niglon EV40AXSP-5WA 5-Way IP65 Metal EV Distribution Board

Niglon EV40AXSP-5WA 5-Way C40 SPD IP65 Metal EV Distribution Board

SKU: EV40AXSP-5WA

Quantity Discount

Quantity	Price
1	£51.48 £61.78
2+	£50.45 £60.54
3+	£49.94 £59.93
5+	£48.91 £58.69

£51.48

Niglon EV40AXSPC-4WI IP65 EV Consumer Unit

Niglon EV40AXSPC-4WI 4-Way C40 SPD IP65 EV Consumer Unit

SKU: EV40AXSPC-4WI

Quantity Discount

Quantity	Price
1	£34.16 £40.99
2+	£33.48 £40.18
3+	£33.14 £39.77
5+	£32.45 £38.94

£34.16

Hager BD163T 3 Phase RCD Add-On, 63A 30mA, Type A, single-module residual current device for Hager MCBs

Hager BD163T RCD 3Phase Add-On A 63A 30mA

SKU: BD163T

£323.16

Hager VW110G 10 Way 100A IP55 Weatherproof Consumer Unit

SKU: VW110G

£99.84

Hager VW310G 10 Way 100A IP55 RCCB Consumer Unit

SKU: VW310G

£198.42

Hager EPN510 1 Module 230V Latching Relay 1NO

SKU: EPN510

£31.86

Hager EPN513 1 Mod 24V Latching Relay 1NO

Hager EPN513 1 Module 24V Latching Relay 1NO

SKU: EPN513

£45.58

Hager EPN520 1 Module 230V Latching Relay 2NO

SKU: EPN520

£42.50

Hager EPN524 1 Mod 24V 2NO Latching Relay

Hager EPN524 1 Module 24V Latching Relay 2NO

SKU: EPN524

£82.85

Showing 1861–1880 of 2366 results

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.
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.
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.
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.
Surge Protection: Surge protection devices may be required to protect against voltage surges or lightning strikes, especially for sensitive electronic equipment.
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.
Circuit Isolation: BS 7671 also specifies requirements for circuit isolation devices such as switches and isolators.
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.
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.