The Omron G3NA-440B-UTU-2 DC5-24 is a panel-mount solid state relay from the G3NA series, switching AC loads up to 40 A across 200 to 480 VAC. Zero-cross switching means the output turns on at the AC voltage zero point, reducing inrush and EMI on resistive or lightly inductive loads — useful for heater banks, lamp banks, or transformer primaries where soft start matters.
Rated 40 A output with or without a heat sink — the same figure, so the datasheet likely assumes a specific thermal mounting surface. In practice, plan for a heat sink or metal panel to keep the junction temperature within limits at full load. The 200–480 VAC output range covers 208, 240, 277, 400, and 480 V line voltages. Input current draw is 40 A — that's the load current, not the control current; the control side is a low-current DC input compatible with most PLC digital outputs. Finger-safe construction and screw terminals for field wiring. Body dimensions 1.1 in deep, 1.69 in wide, 2.28 in high. LED indicator for output status. Surface-mount style bolts to a panel or heat sink.