Load on switch?

    Hi all, Merry Christmas.

    I have a question regarding the Shelly 1pm.

    I am planning to switch a high load (12 A), and my question is regarding the load that goes through the switch, in order to make the right choice about it.

    Studying the diagram, I can not understand the load that goes through the switch. Is it just opening/closing a circuit by voltage difference, without any current going through, or will the 12A go through the switch?

    Thank you in advance!

    Why did you chose a Shelly 1PM? Do you need energy metering? If not, you should consider to use a Shelly 1 or Shelly plus 1! Both types can switch 16A.

    But if energy metering is essential, I would recommend to use a Shelly EM and a contactor (relay). Energy metering with Shelly EM happens with a current clamp. Thus, a contactor can be used, with higher rated current as the tiny relay in the Shelly 1PM.

    And by the way: Welcome to the forum!

    „Habt Geduld. Alle Dinge sind schwierig, bevor sie einfach werden!“ (aus Frankreich)

    „Nothing in life is to be feared, it is only to be understood.“ (Marie Curie, 1867-1934)

    „Es reicht nicht“, rief Schiller, „Gedankenfreiheit zu fordern, man muß auch denken können, sonst fordert man Gedankenlosigkeitsfreiheit und die ist die Freiheit zur Dummheit, welche wiederum die schlimmste Unfreiheit überhaupt ist!“
    (Aus „Besuch aus Weimar“ von Gert Heidenreich, Schriftsteller, *1944 in Eberswalde)

    Hi thgoebel!

    Thanks for your response. I have handy here some Shelly 1's and some 1pm's. I prefer to use the pm's since they have temperature protection. Also, using a contactor is not an option for now, since it's for an old house and I would like to avoid removing the wires and adding more in the conduits, since most old houses here have broken in-floor conduits.

    So my plan is to switch this high load with the 1pm, just to have overtemp protection, and also use a switch I have handy. But it doesn't feel OK for me since I do not know the amperage that will flow through the switch. I don't know the rating of the switch I have here (it's just a normal lighting switch), so I am looking to find if it's safe, and also solve the question "what flows through the switching circuit in shelly 1 pms".

    Thank you again for your answer!

    The rating of the relay contact of a Shelly 1PM is 16A @230V AC. So far, so good… The (manual) switch to activate a Shelly doesn’t guide the load current. Hence, the switch may be much smaller than expected. The switch has to be rated for mains voltage only!

    „Habt Geduld. Alle Dinge sind schwierig, bevor sie einfach werden!“ (aus Frankreich)

    „Nothing in life is to be feared, it is only to be understood.“ (Marie Curie, 1867-1934)

    „Es reicht nicht“, rief Schiller, „Gedankenfreiheit zu fordern, man muß auch denken können, sonst fordert man Gedankenlosigkeitsfreiheit und die ist die Freiheit zur Dummheit, welche wiederum die schlimmste Unfreiheit überhaupt ist!“
    (Aus „Besuch aus Weimar“ von Gert Heidenreich, Schriftsteller, *1944 in Eberswalde)

    That's what I thought, but couldn't find the info in the Shelly manuals. It is clear that the (manual) switch runs on mains voltage, but what goes through didn't seem clear to me.

    Thanks a lot.

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