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Magnetic Safety Switch Wiring

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Forum topic by csask posted 01-29-2016 03:00 PM 417 views 0 times favorited 3 replies Add to Favorites Watch
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csask

8 posts in 318 days


01-29-2016 03:00 PM

Hi All, I just picked up a used Delta 36-474 (contractor) TS. It was wired for 220v, but I wanted to switch it over to 110v for the time being until I get a chance to wire up a 220 outlet in my garage. So I rewired the motor and plug for 110v but it won’t start. I can hear buzzing at the power switch so it is getting power. It came with a magnetic safety switch (from Canwood Industrial ie House of Tools, model # is MS1-09D which turns out to be sourced from here: “www.nhdi.com.tw/engContactorAC-Star_MS1IP65.html” I believe).

I know just enough electrical to get myself into trouble. Do I need to rewire the switch for 110v, or will it even work with 110v?

Thanks,
Clint


3 replies so far

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MrUnix

4220 posts in 1662 days


#1 posted 01-29-2016 04:23 PM

Their web site doesn’t seem to have any wiring diagrams for the switch, but based on the specs for the MS1-09D, it is suitable for up to a 2HP motor at 240V, but only a 0.5HP motor at 120V. I’m pretty sure that saw has more than a half horse motor, so that switch isn’t really appropriate for it on low voltage.

Is there any markings or wiring diagrams on the switch or under the cover? Post some pictures.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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csask

8 posts in 318 days


#2 posted 01-29-2016 05:17 PM

I noticed that HP rating at 120V and was a little concerned also. You’re correct, the motor is rated at 1.5 – 2 HP. There was a wiring diagram on the inside of the switch cover box. I’ll take a pic later today and post. Just looking online I could get a replacement (not magnetic but I do like the big paddle) that’s good for 110 and 220, and is cheap. Thoughts?

Thanks,
Clint

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csask

8 posts in 318 days


#3 posted 01-30-2016 02:08 AM

Here’s the wiring diagram

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