Wall box 240v/13A relay, not a socket (for storage heater)? (UK)

Can anybody point me to a relay which can drive a load of 13A or more (in the UK so 240v), and mounts in an existing wall box, but isn’t a socket?

I’m looking to control my storage heating with SmartThings and was expecting it to be fairly simple – naively, it turns out! :slight_smile:

Although is seems there are a number of replacement wall sockets which can handle 13A loads, my electrician tells me that the storage heaters shouldn’t go through a socket, and so I’m looking for something that replaces the wallplate. I’ve found a couple of solutions which go inline into the wire, which I think would work but leaves an extra bit of kit hanging about the room:

as well as the Aotec Heavy Duty one which is rather overpowered for this job.

Can anybody (a) point me to a relay which can mount in a wallbox like this, and/or (b) tell me how to work out whether the two inline relays I found will work with SmartThings? They are Z-Wave/Zigbee, but I’m new to all this and don’t know whether that’s enough …


It’s not just whether they can handle the running draw, it’s whether they can handle the surges as the heater goes on and self regulates.

Personally, I would go with the aeotec. I don’t think it’s overkill for what you describe, I think it is Spec’d for exactly that kind of device class.

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