Fuse F1 in Shelly Pro Dimmer 2 PM -- does anyone know the value?

    • Autor

    I need to replace fuse F1. Does all the load current go through this fuse? in this case I can calculate an appropriate value based on my expected loads. Or does it only protect the electronics in which case it should be smaller. It seems to have died when I had a load connected that was only supposed to be 50 watts (120 v) but it may have had a lot of inrush current (LED transformer or driver) or something else may have been wrong with the wiring of the load. (Chandelier was installed by an electrician who wasn't available when I connected dimmer).

    Divergent from all other Shellies, the current of the two appliances goes through the fuse F1!

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    It is a Picofuse (SMD type) with 3,15A slow blow. Unfortunately, I didn’t search for a replacement yet…

    Moreover, a second fuse is mounted at the power supply submodule: A fusible resistor, which was used with Dimmer2 yet.

    „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)

    „Comment is free, but facts are sacred“ (C.P. Scott, britischer Verleger)

    2 Mal editiert, zuletzt von thgoebel (23. Juli 2024 um 08:52)

    By the way: Running with the specs (400W for both channels), 3,6A are flowing at 110V AC. Slightly more than the specified tripping current of the fuse. Tssss…

    „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)

    „Comment is free, but facts are sacred“ (C.P. Scott, britischer Verleger)