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Old 03-22-2020, 10:06 PM
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Sky Campbell Sky Campbell is offline
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Join Date: May 2002
Location: Gainesville FL
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Ive never seen a mdr fail in the on position. Knowing how they work you would understand how thatís impossible unless you lay it on its side or hold it upside down. I donít think you can find anyone that would consider a ssr to be more reliable then a mdr. Maybe someone will prove me wrong but I highly doubt it.

That said I would use mdr relays for my positive cutoff and a scr to control my power. The scr if tuned correctly (reducing the gain, using soft start and only delivering as much power needed) can possibly double the life of wire elements.
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