HOT: Need Commercial HVAC / Electrical Parts supplier & advice

[theGinsue]

I have a work trailer with 4 HVAC units that aren't working. My electrician has found a bad part, but we don't know what it is, just that it's a "contactor" (see image. UPDATE: He pulled the part and found a part description.)
We need to identify this part & find a source in the Denver area for this part ASAP.

Any help is appreciated. If you have constructive help, please call me at 719-325-6824.

Thomas / Ginsue