Are there any supported WiFi switches that are rated for true 16A @ 230V ? I see many now that says 15A, or 3500W.
15A * 230V = 3450W which is more or less the 3500W.
Both Sonoff TH16 and Shelly 1 are rated 16A, but says 3500W. Newer sonoff says 15A.
Just use an SSR. I use one to turn on/off my ducted air conditioning as it uses a lot (60W+) of standby power.
How much A do you need ? I have some tuya-converted tasmota switches rated at 60A.
I need the full 16A. Fuse is rated the same. I can only dream about single phase 32A at home.
I am in EU, so 230V nominal. But I need something that will pass the 230V/16A for 2-3 hours at a time without melting down.
And I think there is a reason Sonoff started to relabel 16A switches as 15A. And everybody writes 3500W.
When I look for tuya on AliX I do not find anything with these specs. The Sonoff TH16 is supposedly the only one rated 16A, but I saw 3500W somewhere as well. Likely a standard relay size.
The reason is simple: in theory we have 230V, in practice it is between 220V and 240V. They just want to play safe.
You can use a normal 230 relay like this one:
So to understand you right (I only understand 75% of written dutch on product page) you suggest I use a Tasmota device to switch 230V mains through a switch like this ? And then have the same or another phase connected directly to the ABB switch, which will then carry the high load ?
I can see this will work. I do not get any power measurement data. Then I would need a clamp on thingie as well. I do have a couple I never got around to use. Low voltage, bought for Pi/Arduino/ESP8266
Shelly? Shelly.cloud
I have some Shelly1, they are great.
Labelled 230V, 16A - but their webpage says 16A, 3500W. Not 3700W / 3.7kW as chargers are usually labelled when 16A. That is equivalent to the new 15A markings on Sonoff.
So I wonder if these things are really designed for 16A over long time periods.
I see some even recommends to create outlet very close to fuses or use 4mm^2 cable to avoid cable heating up too much. Charger comes with 1.5m cable on the 230V side.
Since the cheap charger I buy will default to 10A on power-on, maybe I should just use a Shelly 1PM. The charger will only run 16A when instructed to do so (hold in a button when connecting to power - but this can be hotwired 
). Most of my charging will thus be Shelly turning on the power in the middle of the night - and that at 10A unless charger modded.
With a 9kW battery (plug-in hybrid) 2.3kW might take 4 hours then, but during night that is acceptable.
