Circuit Protection

Circuit Protection by Brand (1908)

Circuit Protection Devices (1064)

SPD Surge Protection Devices (127)

Three Phase Distribution Boards (93)

Switch Fuses - Isolators (174)

Street Lighting Circuit Protection (13)

Hager CNA584U RCCB 1P+N 100A 100mA A Class – Time Delayed

SKU: CNA584U

£96.70

Hager CPA584U RCCB 1P+N 100A 300mA A Class – Time Delayed

SKU: CPA584U

£266.48

Live Electrical 3P+N 10A B Curve 30mA Type A RCBO

5 In Stock

SKU: RTN310B-030N

£45.15

Live Electrical 3P+N 25A C Curve 30mA Type A RCBO

SKU: RTN325C-030N

£45.15

Live Electrical RNA10B-030 RCBO A Type DP Bi-Directional 10A B Curve 30mA

SKU: RNA10B-030

£10.43

Live Electrical MDAC4P32/24V 4 Pole 32A 4NO AC Contactor/24V DC Coil

Live Electrical MDAC4P32/24V – 4 Pole 32A 4NO 24V DC Coil Modular Contactor

SKU: MDAC4P32/24V

£18.38

Live Electrical MS4100D 4 Pole 100A Double Terminal Main Switch

SKU: MS4100D

£12.06

Live Electrical LS-MB10 10 Module LSMC Mounting Bracket

SKU: LS-MB10

£7.52

Live Electrical LS-MB18 18 Module LSMC Mounting Bracket

SKU: LS-MB18

£11.00

Live Electrical LS-MB24 24 Module LSMC Mounting Bracket

SKU: LS-MB24

£15.65

Live Electrical LSMC04 4 Module Metal Enclosure

SKU: LSMC04

£21.07

Live Electrical LSMC22 22 Module Metal Enclosure

SKU: LSMC22

£44.90

Live Electrical FMC04 4 Module Flush Mounted Metal Enclosure

SKU: FMC04

£23.22

Live Electrical FMC12 12 Module Flush Mounted Metal Enclosure

SKU: FMC12

£38.14

Live Electrical FMC14 14 Module Flush Mounted Metal Enclosure

SKU: FMC14

£40.46

Live Electrical FMC22M-SP 19 Way Flush SPD Metal Consumer Unit

SKU: FMC22M-SP

£105.56

WCED WKC310B 10kA 3 Pole MCB Curve B 10A

SKU: WKC310B

£10.33

WCED WFD116B-030 Bi-Directional Type A 30mA B Curve 16A AFDD

SKU: WFD116B-030

Quantity Discount

Quantity	Price
1 - 2	£82.03 £98.44
3+	£78.75 £94.50
5+	£76.29 £91.55

£82.03

Hager JK1SPKIT Single Phase Kit

SKU: JK1SPKIT

£40.67

Hager MZ206 Under Voltage Release 230V AC

SKU: MZ206

£44.67

Showing 1301–1320 of 2352 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.