Crydom DRH Series Solid State Contactors Crydom DRH series DIN Rail mount solid-state contactors with ratings up to 20 A per channel at 600 V ac. The DRH Series is ideal for heating applications and can be used to control (start/stop) 3 phase motors of up to 5 HP at 480 V ac. It is an effective solution for replacement of electromechanical contactors in commercial and industrial applications that require frequent switching. DRH Series contactors have an innovative design that increases the airflow thus improving thermal performance. Featuring over-temperature protection to avoid overheating in case of a fan malfunction. Features and Benefits Over-voltage protection Alarm output in case of over-temperature Enclosed heat sink Zero voltage and instantaneous turn-on output Multicolour LED with input status and alarm indication cULus listed and CE compliant Ratings up to 20 A at 600 V ac Fits standard 35 mm DIN Rail Fan controlled through thermistor and microprocessor to optimise fan operation