Contactor & Overload Relay

[rshiggaon]

Hello,

I'm looking for a contactor and overload thermal relay compatible with my motor: Baldor CEM3615T General Purpose Motor, 3 Phase, 5 HP, 1750 RPM, 60 Hz. I have attached pics for the contactor and overload relay.

I couldn't find the exact part on KR, and since I'm not entirely familiar with the technical details, I’d appreciate any guidance or recommendations from this forum. If anyone can share a link to the appropriate part on KR, that would be greatly appreciated.

Thank you!

 

[HeyVern]

You can take it to any electric supply house or motor shop and they will cross reference to the right ones

 

[Greg Pack]

Is the overload tripping on the left contactor? Your overload you currently have is a little small for that motor. It should be set for about 16 amps

 

[Greg Pack]

These should work

https://www.automationdirect.com/adc/shopping/catalog/motor_controls/iec_magnetic_contactors/iec_contactors/sc-e1-24vac

https://www.automationdirect.com/adc/shopping/catalog/motor_controls/iec_overload_relays/thermal_overload_relays/tk-e2-1800

 

[rshiggaon]

Is the overload tripping on the left contactor? Your overload you currently have is a little small for that motor. It should be set for about 16 amps

Yes it did for Bay1, this is the first time it happened. I dont think so it supports 16 amps right?

 

[Fatboy769]

Depending on your incoming voltage, you’re looking somewhere between 15-17 amps. Either way, the overload you have on Bay 1 is too small.

 

[Greg Pack]

Yes it did for Bay1, this is the first time it happened. I dont think so it supports 16 amps right?

Correct. You need an overload that 16 amps falls into range. The one you have now is suitable for a 3HP motor which is also a common motor to be used for a SS bay. 5HP motors are often used for "super bays".

Also wouldn't hurt to buy a "clamp around" amp meter and check running amps. I'm a tool snob and prefer expensive fluke but Randy posted about this one working well:

https://www.amazon.com/AstroAI-Multimeter-Auto-ranging-Capacitance-Non-contact/dp/B08MTTX66X/ref=asc_df_B08MTTX66X?mcid=f6077eed3a3830e28cd8844eba6b3f06&hvocijid=13550279699363012485-B08MTTX66X-&hvexpln=73&tag=hyprod-20&linkCode=df0&hvadid=721245378154&hvpos=&hvnetw=g&hvrand=13550279699363012485&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1012954&hvtargid=pla-2281435180778&th=1