Table Saw Motor Starter Switch

[Michael Zerance]

I just picked up a Delta 12/14 (model 34-351) with a 5hp 3-phase motor. I need a motor starter and switch. My preference is for one of the push button units with the large red mushroom stop buttons that I will mount on the bottom of the fence rail towards the front left.

I found one for a Delta Unisaw but it is labeled 1-phase, however it has three terminals. Is it possible that this switch can be used with 3-phase:

505948 505949505950

[Michael Zerance]

Nevermind...this switch isn't the correct amperage

[Bill Dufour]

I prefer a separate contactor+adjustable overloads mounted anywhere and a push button station mounted where convient. This also allows me to mount a off switch on the back if desired or a foot bar switch.
I prefer to use a 120 or 240 volt coil and avoid a transformer. I also like a lighted mushroom off.
How many amps+volts

BilL D

Like this . I can not read the coil voltage
https://www.ebay.com/itm/256087235792?hash=item3b9ffd1cd0:g:88EAAOSwg2Vkboj L&amdata=enc%3AAQAIAAAA8GhzlF86RPK8eWbHUTWlmHMWscfDJ cut3tQpb9Y9CuBejyDz6QuIyqT4e%2FyEtnZebKT1Z1qrIfbSV BhWcY%2FscnY4r0uRnJQT1MhD30%2BWqdaBUy8hb5Kx6%2BT%2 Fj7lf3WPfp7W50z2ScdFtqAumWs02VV13GZosFQyh32%2FA5Ry p5R3VsITv%2FI6jXZ4QgSDM1ddbe%2Bp9PWLC2cOLF48ax9s1a tanHl2bqu4f0r17hqn49cYC9eC2wSS6FOcYy63aUimMNG9MCv6 rj%2BfiN%2F9UgqDGdalQKFm66tkAq2wJlFlnJl%2FgPZ3YlIx 87HcpJHX06BL98A%3D%3D%7Ctkp%3ABk9SR6Dk04e-Yg

[Michael Zerance]

I prefer a separate contactor+adjustable overloads mounted anywhere and a push button station mounted where convient. This also allows me to mount a off switch on the back if desired or a foot bar switch.
I prefer to use a 120 or 240 volt coil and avoid a transformer. I also like a lighted mushroom off.
How many amps+volts

BilL D


Like this . I can not read the coil voltage
https://www.ebay.com/itm/256087235792?hash=item3b9ffd1cd0:g:88EAAOSwg2Vkboj L&amdata=enc%3AAQAIAAAA8GhzlF86RPK8eWbHUTWlmHMWscfDJ cut3tQpb9Y9CuBejyDz6QuIyqT4e%2FyEtnZebKT1Z1qrIfbSV BhWcY%2FscnY4r0uRnJQT1MhD30%2BWqdaBUy8hb5Kx6%2BT%2 Fj7lf3WPfp7W50z2ScdFtqAumWs02VV13GZosFQyh32%2FA5Ry p5R3VsITv%2FI6jXZ4QgSDM1ddbe%2Bp9PWLC2cOLF48ax9s1a tanHl2bqu4f0r17hqn49cYC9eC2wSS6FOcYy63aUimMNG9MCv6 rj%2BfiN%2F9UgqDGdalQKFm66tkAq2wJlFlnJl%2FgPZ3YlIx 87HcpJHX06BL98A%3D%3D%7Ctkp%3ABk9SR6Dk04e-Yg

Yes, I like that idea. I could install a smaller push button switch station on the front rail and the contactor on the back of the saw.

It's 240v, 5hp, 3-phase. I assume the amps are around 16 but I haven't been able to get a good look at the motor tag yet.

[Bill Dufour]

I would rather have a used USA made contactor then a new made in China one. I think it will last longer. Buying used, an empty enclosure will cost more then the guts by themselves.
Bill D

[Michael Zerance]

Does it make a difference if the push button station has momentary switches or latching switches?

[Aaron Inami]

I generally recommend a magnetic switch for something like a table saw. I'm not sure if Bill's link is a magnetic switch/contactor.

Here's a 5HP 3-phase example:

https://www.amazon.com/Big-Horn-18835-220-240-Volt-12-18-Amp/dp/B002LVUWIG/

I have never seen a large mushroom "OFF" button on a switch with this amount of power. They are all usually for the lower current 120V stuff (only good up to 1.5 HP).

[Bill Dufour]

Momentary switches are much safer. At least for start switches. If you lose power the tool with shut down and not restart until power is restored and then the start switch has to be pressed. With latching on switches it can start as soon as it is plugged in. Or if power comes on while you are touching then blade trying to figure out what has happened.
For a contactor a push button switch is very low fractional amps. I have never seen a mushroom switch rated for more then 5 amps or so.
Bill D

[Bill Dufour]

I'm not sure if Bill's link is a magnetic switch/contactor.

the title says contactor overload. Magnetic switch is a recent vocabulary term to describe a self contained contactor with push button station integrated into the enclosure. Overloads may not be included, often not.
Bill D

[Aaron Inami]

Based on your definition, "Momentary switches" and "Magnetic switches" are essentially the same thing. Once hitting the "ON" button, the contactor will be engaged until you hit the "OFF" button or you lose A/C power (like un-plugging the power cord). It prevents the machine from automatically restarting when A/C power is turned back on. It's a safety thing. You don't necessarily need it on all tools (like dust collector), but it's important on any tool that could cause injury.

[Michael Zerance]

Thanks for the info, guys.

[Michael Schuch]

my go to for motor starters has always been thebay:
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1311&_nkw=motor+starter+3+phase&_sacat=0&LH_TitleDesc=0&_odkw=motor+sttaarter&_osacat=0

[Michael Zerance]

Found this one on eBay for $80. They state in the ad that it is branded NHD, "a trusted manufacturer used for many years as OEM equipment by Delta Woodworking Machinery, Powermatic, Jet and many other well known machinery manufacturers.".

https://www.ebay.com/itm/153828114073?var=453862796613&_trkparms=amclksrc%3DITM%26aid%3D777008%26algo%3DP ERSONAL.TOPIC%26ao%3D1%26asc%3D20221115143056%26me id%3Db252377d55304a8d852bda2d3caa9c1c%26pid%3D1016 12%26rk%3D1%26rkt%3D1%26itm%3D453862796613%26pmt%3 D0%26noa%3D1%26pg%3D4375194%26algv%3DRecentlyViewe dItemsV2&_trksid=p4375194.c101612.m4236&_trkparms=parentrq%3Af4d12f361890a8cc3c4273fefffde 5ca%7Cpageci%3A3eda06e9-3abd-11ee-a253-7e54806f3fc3%7Ciid%3A1%7Cvlpname%3Avlp_homepage

505999

Thoughts?

[Michael Zerance]

Or this one which looks to be the right type and vintage to match the saw but I think they're asking too much for it:

https://www.ebay.com/itm/255736007790

506000

[Aaron Inami]

The $375 Allen-Bradley switch is NOT a magnetic switch, so it is not recommended. It is likely priced at $375 because it's "vintage". The seller is hoping a rich "collector" is going to buy it at this price, but the value is just not there.

The other ebay item is very similar to the Amazon link I posted. The Amazon item is $20 cheaper.

[Bill Dufour]

A motor starter is a different name for a contactor. It often includes overloads. I would only buy adjustable overloads now. No need to buy separate heaters to match the load. You can add overloads to any switch.
Bill D

[Warren Lake]

Id like the cover for an old dovetailer then put danfoss contactor inside. have some old danfoss with round corners so old it looks Art Deco

[Jason White]

Grizzly sells them.

[Michael Zerance]

Okay, here's what I've come up with:

This starter mounted on the back of the saw:

506046 506047
https://www.ebay.com/itm/284252967472?hash=item422ecc1230:g:P7QAAOSwEo5gciF f&amdata=enc%3AAQAIAAAAwKe2PQZYpSWgBr%2BOf%2FI25xHkR ZSlwOiVVUjo%2FJXrhI6Nn4G%2BdyNfvTt74p1h4FvoGcEzH%2 FuGWr37LJuLPKJX%2BcBmOTeqOhq0bf%2BRRZypjBNGN72RFJZ mGN7LjiLF9uPFw3qPJYRR8Yt5YnXk4E3ODHQopZeTXsTgywTQ% 2FcrmwkPgiknw0mPzjvLbLEbvNLjFQd%2BQbZdk3NbQNs19Ukf bwmxYleQcWqKO9L8dQQ4chhX1UOrnzvsKJq9ES9yBhihaVA%3D %3D%7Ctkp%3ABk9SR7CQhPa-Yg


with this switch (or similar) mounted on the front rail:

506048 506049

https://www.ebay.com/itm/124774492627?_trkparms=amclksrc%3DITM%26aid%3D1110 013%26algo%3DHOMESPLICE.SIMRXI%26ao%3D1%26asc%3D25 3144%26meid%3D6ef65f7d778d4d2ba430da14353211bc%26p id%3D101196%26rk%3D1%26rkt%3D12%26sd%3D25617504869 8%26itm%3D124774492627%26pmt%3D1%26noa%3D0%26pg%3D 2047675%26algv%3DPromotedRVI%26brand%3DAllen-Bradley&_trksid=p2047675.c101196.m2219&amdata=cksum%3A1247744926276ef65f7d778d4d2ba430da1 4353211bc%7Cenc%3AAQAIAAAA8BFMeJ9vNoeV5R6diewUBS3C GaDYU66O1YiFBWzRfpEr8x9E0KfquNiRQmJIRsrTPWGrLixuw9 jFVIF9kbEMqxtBjTXiV0xy4cQfeW1IIHCuXdtV2hL33Tnh8Q3i DCkhFVMFiV%252F4pf8xbXQwnNq9A35bSjHrmbqP2COyF%252B UqwvvjA79n10SGUYUfWDf2am8NfNOFrD6pS3GOWvv4GEITSqVU fyYXYqQpY8NIx0GB%252BqV6min%252BIpCx9%252FdCZ37Cix Yr6dD2S0%252Fy33ifWfihF6BJSEDTeDQnzDt7O%252BZ0X9Cb 1Uaa8Kxfoe%252BAdyJLXAD%252FI652vw%253D%253D%7Camp id%3APL_CLK%7Cclp%3A2047675&epid=170027553

Thoughts?

[Steven Cooper2]

I've got a motor starter that might be rated at 5hp, I'll go take a look. it's an old allen bradley if you are interested.

I replaced it with a VFD.

edit: Only 3hp...

[Michael Zerance]

I've got a motor starter that might be rated at 5hp, I'll go take a look. it's an old allen bradley if you are interested.

I replaced it with a VFD.

edit: Only 3hp...

Thanks for checking

[Bill Dufour]

That looks fine. I prefer a mushroom off switch so can use my knee to turn it off

[Michael Zerance]

Thanks for the suggestions, fellas. I got the saw wired up and running so I figured I would post an update on this thread. I used the starter and switch that I posted previously. I also wired in a limit switch to be used as an emergency stop but I have yet to construct the foot operated lever that will trigger it.

Eventually I will restore the saw but this is how she sits currently:

518367

518368

[jim sauterer]

That’s a beast nice saw happy cutting.

[Bill Dufour]

Feel free to add another "off" switch on the back or side near the back. Helps if you are one guy pulling big pieces off the back of the saw.
I bought a rope switch to use as a foot "off" switch. Took too much pull to be easy to adapt so I am still thinking. My lathe has a mechanical foot brake and off switch setup on it.
Bill D

[Bill Dufour]

My 12/14 saw I unbolted the 5" tall plinth and added a 5" tall rolling base.
Bill D

[Michael Zerance]

Feel free to add another "off" switch on the back or side near the back. Helps if you are one guy pulling big pieces off the back of the saw.
I bought a rope switch to use as a foot "off" switch. Took too much pull to be easy to adapt so I am still thinking. My lathe has a mechanical foot brake and off switch setup on it.
Bill D

Good idea, I'll think about it.


My 12/14 saw I unbolted the 5" tall plinth and added a 5" tall rolling base.
Bill D

Eventually it will be bolted to an outfeed table along with the Grizzly saw that sits at a right angle to this saw. For service and maintenance, I can use the forklift to move it around.