Shelly USA officer says Dimmer Gen3 won't work in US electrical systems. Any idea why?

    • Autor

    This was shared by the Doug Roberson, the Shelly USA CTO, in the Shelly USA reddit.

    Seems odd that Dimmer 2 (Gen 1) works fine in the US, as does Dimmer 1 PM Pro and Dimmer 2 PM Pro.

    I can't really think of any reason why, except perhaps

    1) a design mistake made it not work at 60 Hz, or,

    2) design choices that allowed 200 watt load at 230 volts produced a current-limited design that would only allow dimming 100 watts at 120 volts. ANd this seemed too puny to market.

    Due to the fact the pro Dimmer series does contain a fuse for the current to the load(s) (IIRC 3.15A), the rated wattage at 110V AC is cut in halves. Thus, reason 2 seems to be appropriate…

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