Relay circuit breaker in Home Assistant

Has anyone been able to use any kind of relay circuit breaker (like this https://www.aliexpress.com/item/32979662165.html or this https://www.aliexpress.com/item/4000464773342.html or similar) in Home Assistant?

As you can see, the point is to install this after the actual MCB, and use this as a relay.

But I’ve found no one compatible with Home Assistant.

Does anyone knows if there is any compatible with Home Assistant to be able to turn on/off?
Or how could I configure them?

If you do not need the form factor of a circuit breaker or the current, you can use the sonoff relay modules. Just flash Tasmota/ESPHome on these and you will be happy.
If you need more current, you could always use a solid state relais (something like this) and an ESP with ESPHome to get the same functionalitly. But you will have to build a good enclosure with proper grounding and cooling.

For me these circuit breaker modules are kind of scary. Imagine someone just pulled this circuit breaker and did not know to pull the “real” one. He then works on the electrical system and then someone switches it one remotely… But this is me without knowing anything about your plans.

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If you want to use it behind a actual circuit breaker, you could use a ZMAI-90, widely available on ali.

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What is the advantage over tasmota vs the OEM software?

You can have the oem sonoff software and use the AlexxIT/SonoffLAN custom integration.

After detection of the sonoff you can put it behind your firewall - without internet access - and it would still work.

Yes, that is true, but I like to get rid of chinese manufacturer Firmware that potentially talks to the cloud. Which my router blocks, but I always have to remember blocking a new device … well, I guess its personal preference :wink:

For me, the biggest advantage of Tasmota is you have a unified interface for all your esp8266 devices. My 40+ sonoff devices, my 30+ tuya devices, my 10 shelly 1s, my 2 sinilinks all run Tasmota. Not to have to maintain different integrations for all is a big advantage.

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Woohoo hold it right there! This is quite an impressive collection you have there … So all of your house actuates on wifi?

Most of it runs on Wifi. I don’t have smart bulbs/lights, so I made the switches smart. Plus smart switches and 6 ZMAI-90 for energy monitoring. It quickly adds up.

Sorry for taking over this post, what is your experience with Wireless and reliability?

Can’t complain, they all are very reliable. Although at a given moment my dd-wrt router used as acces point/dhcp server could not handle the load any more, I had to switch to using Pi-hole as dhcp server :slight_smile:
4 access points and a router for wifi at the moment.

@francisp Hmm I see. Personally with the Sonoff, I can’t complain.

With tuya however, I have 3 tuya devices for my outside covers, the integration is a real pain. They go up and down as expected but the status reporting is horribly slow sometimes (if it even does report). Is tasmota compatible out-of-the-box with covers? There should be some interlock on the GPIO by default, otherwise I’m risking some sparks at the moment that I flash them.

@jd1900
I prefer using HS-110 TP-link plugs with energy monitoring (and especially CE/FCC branding). If that’s not possible I use the sonoff solution. Seems quite nasty to me to put some chinese hardware right in the fusebox.

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One side note about circuit breakers - if they are enclosed in a steel enclosure, then you may need an external antenna for wireless signals. The grounded metal enclosure acts like a Faraday cage and stops RF signals.

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