Best Switches Relays Deals Online in the UK (25 Deals Found)

Last Updated - 01/09/2026 Sort By:

Best Choice
Weasch

New
Weasch 2 Pack Fuse Relay Switch Kit, 12V 30A, 4 Pin SPST, 30A Switch Harness Set, Automotive Electrical Relays with 14 A
Rated voltage 12VDC (14V Max), 30A High Switching Capability

£9.99
Gebildet

New
Gebildet 3pcs 12V Fuse Relay Switch 12 AWG Harness Set with Built-in Diode- 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotiv
Upgraded Version - Automotive relays built in fuse socket with included 30A blade fuse, no need of a separate fuse holde

£11.99
New
Wireless Remote Car Battery Disconnect Relay Master Kill Cut-off Switch Isolator
Important: Fully disconnect power before installation and perform an ignition test afterward. Wireless Dual Remote Batte

£14.99
TIANXUAN

New
12V Fuse Automotive Relay Switch Harness Set Gebildet 30A Ato Atc Blade Fuse 4 Pin Spst Automotive Electrical Relays wit
Upgraded Design with Built-in Fuse: Includes 30A ATO/ATC blade fuse integrated into the 12v relay socket, eliminating th

£7.99
New
Wireless Remote Car Battery Disconnect Relay Master Kill Cut-off Switch Isolator
Battery disconnect switch rated current: 240A. Disconnect Switches can solve the power consumption caused by such proble

£13.99
Ollanoos

New
Ollanoos 10 Pack JD1914 12V 40A 5 Pin SPDT Electrical Relays, Starter Switch Relays for Automotive Truck Motorcycle Boat
High Switching Capability: High current switching capability of 30A and 40A for a wide range of high load applications,

£14.99
Best Value
CHAMSUREUK

New
5M 12V 140 Amp Split Charge Relay Kit,VSR Dual Battery Isolator,LED Display
💯【Split Charge Relay Kit】- VSR split charge relay kit comes with full installation accessories: 1* Battery isolator, 1*

£44.99
New
433MHz Relay Receiver Module 12V 10A Remote Control Switch Garage Gate
Frequency: 433Mhz. Toggle: Press once the remote button, the relay connects, press the remote button twice, the relay di

£5.09
SONOFF

New
SONOFF Smart WiFi Light Switch 10A 2400W, Wireless Relay Switch Universal DIY Module for Smart Home Automation, Works wi
【Smart WiFi Switch BASICR4】SONOFF Smart WiFi Light Switch BASICR4 is a smart switch which support APP remote control, Sm

£5.99
New
AC 100-240V 433MHz 30A Relay 1CH Wireless Remote Control Switch With Transmitter
Wireless 433MHz remote switch for AC110–240V appliances. Long range & high power relay. ✔ Stable 433MHz RF signal. Frequ

£26.70
Hailege

New
Hailege 2pcs 5V One Channel Relay Module Relay Switch With OPTO Isolation High Low Level Trigger
The module uses genuine quality relay, normally open interfaces , Maximum load: AC 250V/10A, DC 30V/10A.

£6.49
Qaum

New
2 Pack 12v Fuse Relay Switch Harness Set with 30a Ato Atc Blade Fuse 12 Awg
Colour-marked cables for one-step wiring: Each 4 pin relay 12v 30a wire is clearly marked with colour to make installati

£9.99
New
5pcs Heavy Duty 5pin 12v 40a Spdt Car Relay Automotive Switch Power With Socket
5PCS DC12V JD1914 Car SPDT Auto Relays 5 Pin 5 Socket Wires Harness Socket 40A. Relay load: 40A/12VDC. Relay technical s

£11.88
15% Off
SONOFF

New
SONOFF Wi-Fi Smart Switch 10A 2400W, Smart Relay Switch Works With Alexa/Google Home Assistant, Remote Control & Schedul
【MINIR4 Wi-Fi Smart Switch】 SONOFF MINIR4 is a wifi switch which comes with the remote control /voice control/ smart sch

£8.16 £9.60
New
12V 24V Wireless APP Remote Battery Disconnect Relay Master Kill Cut-off Switch
Battery disconnect switch rated current: 240A. Fully compatible with iOS & Android, smarter living! 1x Battery Disconnec

£24.59
Ehdis

New
Ehdis 2 PCS Car Relay 12V 40A, 5 Pin Coil, Automotive Relay Contactor Switch
5 Pin Single Pole, Double Throw SPDT so contact can be wired for normally closed or normally open operation

£7.99
New
Wireless Remote Car Battery Disconnect Relay Master Kill Cut-off Switch Isolator
12/24V Dual Remote Car Battery Disconnect Relay Cut-off Switch with Volt Display. Battery disconnect switch rated curren

£15.79
New
12V 1 Channel Relay Board Module Active Low - Terminal Blocks
1 channel active low relay board with 12V relays capable of being switched on-off by an opto-isolated digital input. Eac

£3.34 £3.59
New
1 Channel Latching Relay Module, Touch Bistable Switch MCU Control, 5V /12V /24V
1 Channel Latching Relay Module. 1 Channel Latching Relay Modules. Press the trigger button, the relay is locked, press

£5.20
New
Wireless Remote Car Battery Disconnect Relay Master Kill Cut-off Switch Isolator
Battery disconnect switch rated current: 240A. Disconnect Switches can solve the power consumption caused by such proble

£19.99
New
NE555 DC12V Adjustable Time Delay Relay Timer Switch Module Shield 0~10S
Relay Switching: One channel. Maximum Load: Up to ~10 A (AC 250 V / DC 30 V typical) :contentReference[oaicite:2]{index=

£3.55
New
5V 12V 24V 1/2/4/8 Channel Relay Board Module Arduino Raspberry Pi PIC
Active low relay board with 5V, 12V or 24V relays capable of being switched on-off by an opto-isolated digital input. Ea

£33.01 £35.49
New
5V 12V 24V Single Self Locking Latching Bistable Interlock Relay Module Switch
5V 12V 24V Dual Double Self-Locking Interlock Latching Relay Module High / Low. This is a self locking, Low level input

£5.20
New
12V 30A Fuse Relay SPST 5Pin Switch Harness Set 16 AWG Wires 6 Pack Automotive
Max Switching Current: 30A. - Automotive Car Wire Gauge: 16 AWG. - Heavy-duty impact molded relay socket with 5 WIRES. -

£14.99
New
24V Wireless Car Battery Disconnect Relay Master Kill Cut-off Switch Dual Remote
Protect your battery from discharging, prevent theft, and extend the lifespan of your engine. 1 x Car Battery Disconnect

£21.35

25 Switches Relays deals are available from: Amazon, eBay stores, starting from £3.34.
The biggest discount we found is 15% on SONOFF Wi-Fi Smart Switch 10A 2400W, Smart Relay Switch Works With Alexa/Google Home Assistant, Remote Control & Scheduled, Neutral and Live Wires Required, MINIR4 at Amazon.
The lowest price we found is £3.34 while the highest is £44.99.
Prices for the best Switches Relays deals average at £13.93.
Last updated on September 1, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Switches Relays.