DRH AC-Output Solid State DIN Rail Contactors Crydom DRH 3 Phase AC Output Solid State DIN Rail Contactors combine the advantages of solid state design with the functionality and ease of use of an electromechanical contactor. The DRH Series features 20Amps on each channel and is intended to switch any resistive as well as inductive loads. It is an ideal solution in any heating application in market segments such as plastic, packaging, HVAC, food & beverage, printing and medical.