Price: EUR6.63
(as of Jan 10, 2026 06:25:51 UTC – Details)

Logic Plus wiring devices from MK Electric have been designed to perfectly complement modern interiors, offering an unobtrusive and sophisticated look that matches current design. Technically, Logic Plus wiring devices exceed British Standard requirements, thanks to patented features that make these products both advanced and safe. Logic Plus products are made from a high-grade thermoset material, which has an inherent antimicrobial property. In recent independent tests, the Logic Plus products were equal to, or exceeded, competitor anti-bacterial products when tested for resistance to MRSA, E. Coli, Salmonella and Klebsiella Pneumoniae bacteria. Logic Plus products are easy to install. MK Electric manufactures high-quality, reliable products and provides a broad selection of wiring devices in each of its ranges.
Modern styling
Total safety
Unrivalled quality and reliability
Quick and easy to install
20-year guarantee

9 reviews for Mk K5423WHI 20A Double Pole Switch with Neon

0.0 out of 5

★★★★★

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Robert B – January 10, 2026

Connection a bit awkward.
Usual high quality associated with MK switches. Terminals are always a bit awkward to get the wires in but once located in position they are very secure.

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Liz – January 10, 2026

Great switch. Solidly built British product made in UK and will last for years
This 20 Amp (4.8 kW) switch is designed for switching heavy loads. I have had 3 installed for over 10 years switching large sotroage heaters on and off regularly and they are as good today as the day I installed them. Just bought another one for a new heater.If anyone is wondering why the neon does not light up, see my drawing and explaination. This switch is designed for all the connections to be used and not as a light switch. Lighting switches only have one wire in and one wire out. There is no way the neon will light up when one end is not connected. If you don’t know these things, then you really should call in an electrician. Don’t give a product a low rating just because you dont know how to use it.

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J C Eng – January 10, 2026

Easy to fit
Easy to fit and came with the fittings

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IW – January 10, 2026

top quality
This item arrived on time.Its as expected from MK top quality and works very well.

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William Stewart – January 10, 2026

Goodbvalue
Good value for a decent quality replacement water heater switch, easy to install, came with the bolts needed etc.

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Burt – January 10, 2026

Best Make to buy
I bought this to replace a no name make that was fitted since we moved in that failed. This MK one fits perfectly , the screws are easy to access and it looks good and solid.

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PhD9 – January 10, 2026

I had some installation issues
The switch looks the part but the cable connections did give me some problemsThe cable fixing screws are not particularly effective, particularly for the earth cable connections.It took me several attempts to obtain a secure fix for both the supply and load wires.That being said the switch does its job so I will wait a few weeks before checking that the cables remain secure.

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Mr D Timpson – January 10, 2026

Does what it’s meant to do
Quick delivery and a nice switch.What more can anyone say.

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