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switch contacts

  1. Grossel

    Rotary switch - draw properly

    Hi. Having an old thread from 2018 - now closed, so this is a kind of solution for that: https://www.electro-tech-online.com/threads/rotary-switch-how-to-draw-properly-in-chematic.153069/ Thing is I actually found a schematic that have setting up a function table - assuming that is the way to...
  2. Grossel

    Rotary switch - how to draw properly in chematic?

    Hi forum. Have an switch with 12 connections, and there is 7 possible positions. It is taken from a small substation and had being used on the analog voltmeter to switch between meassuring L1-L2, L2-L3, L3-L1, L1-N, L2-N, L3-N and 0 (no connections between any poles). It is pretty much the same...
  3. R

    Derating a switch's load rating with inductive load

    I am selecting a switch to energize a 3/4 hp AC motor. I am concerned about the prospect of contact arcing with such an inductive load. If a switch is rated at 25A @ 125 VAC, it will handle the continuous current, but might there be a reliability issue over time due to contact arcing at turn on?

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