Testing a Nema size 3 motor starter?

[930dreamer]

How can I test this motor starter, i.e. the 120 volt coil.

 

[rat55chevy]

Apply 120 to the screws with red wires. Power on the left ground or common on the right. Make sure its clamped down if ur bench testing.

 

[930dreamer]

10-4 on having the starter clamped down, that thing clunks when it closes, thanks. And the coil works.

 

[Mr. T]

Even if the coil works it might be worth it to pull the cover and see what shape the contacts are in.

 

[wyliesdiesels]

Even if the coil works it might be worth it to pull the cover and see what shape the contacts are in.

The contacts may be pitted and burnt...

 

[930dreamer]

I'll look into the contacts. Thanks

 

[OccupantRJ]

Some contacts can get expensive to replace, so be aware of that.

 

[Mr. T]

Even if they look a bit pitted and burnt you can usually clean them up and get more life out of a beast like that.

 

[930dreamer]

I have a 30hp 3 phase motor that I was going to use this starter for, this would be for a rotary phase converter.