The DR06D03 is a 1-phase Solid-state Relay with DIN rail mount, SeriesOne DR. DC output, AC or DC control. Zero-crossing (resistive loads) or random turn-on (inductive loads) output. Fits standard 35mm DIN-rail. Load voltage ratings of 1 to 60VDC. UL 508 Endurance rating for enhanced reliability. UL Class I and II, Division 2, for Hazardous Locations.