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vfd-motor disconnect with early switch 1

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thekman

Electrical
Sep 3, 2009
90
I've Eng-Tip'd and googled and searched various vendor sites, but am not finding a suitable disconnect solution. I am using a 3HP 3ph 208v motor controlled by an appropriate VFD, and want to put a manual LOTO disconnect on the load side of the drive. I don't see anything manual with an auxilliary switch, 'early' or otherwise. Is this not a common practice?
I can probably get away with using an electrically actuated switch (contactor), but would prefer manual, and I don't need any bells or whistles (OLP, PLP, etc)...
Thanks
 
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Haven't needed to look for one for years, but it used to be an available option on several lines of disconnect switches for the US market.
 
I agree with David. Same experience.

Bill
--------------------
"Why not the best?"
Jimmy Carter
 
Nobody will have it built-in to the switch, but lots of people have the switch, then you can add a handle operated aux. contacts.

Go to page 23 of this brochure:

"All auxiliary contacts make after and break before the main switch contacts."

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I don't think the switches in the previous Hubble link aren the ones you want. Try here instead.

xnuke
"Live and act within the limit of your knowledge and keep expanding it to the limit of your life." Ayn Rand, Atlas Shrugged.
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