HAC Solid State Contactors Crydom HAC Series Panel Mount Solid State Contactors (SSCs) are created for control of high power AC loads such as heaters, motors, lights, pumps, solenoids, transformers, etc., where long life and reliable AC switching are required. The HAC Series offers AC solid state power control through Crydom's AC power switching technology and control circuitry. Advanced thermal design provides performance for loads rated up to 150Arms from 48VAC to 660VAC.