dry contact connection for heating

    hello I want to connect my shelly plus 1 to the dry contacts of my electronic heating card

    but in the instructions for my heating it specifies that the dry contacts must not be supplied with 230v

    so I'm a bit afraid I wouldn't want to make a mistake in the connections and I couldn't find a tutorial for this type of connection

    if someone can help me by clearly telling me how to connect the wires to the box to avoid burning out my electronic heating board

    Welcome to the forum!

    To the issue: If a dry contact of an appliance shouldn’t be connected to mains voltage, the shelly (which shall be activated by the contact) MUST be supplied by a low voltage power supply! The Shelly plus 1PM has a separate pin (+12V) to connect a 12V stabilised DC supply. Plus should be connected to the +12V pin and Minus/GND to pin L.

    Please have a glimpse at the forum’s lexicon:

    [Blockierte Grafik: https://smarthome-forum.eu/index.php?media/755-ar768-tasterschaltung-12vdc-v1-png/]

    Just imagine the manual switch in the diagram above is your dry contact!

    This and other diagrams are to be found there…

    „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)

    Einmal editiert, zuletzt von thgoebel (23. Oktober 2022 um 15:14)