38457644 is an OEM Ingersoll Rand replacement temperature probe that was used on some of their medium size refrigerated and high temp dryers. This attaches to the inside of the dryer below the controller.
This contactor was used on the following Ingersoll Rand refrigerated air dryer:
Part #: 38457412
Part #: 38457511
Part #: 38457537
Part #: 88343124
Part #: 38459616