The Omron G3NA-225B-UTU DC5-24 is a surface-mount solid state relay from the G3NA Series, switching AC loads up to 25 A (with a heat sink fitted) or 35 A without one, controlled by a 5 to 24 VDC input. The phototriac output uses zero-crossing switching, so it turns on near the AC voltage zero — minimizes inrush on resistive and lightly inductive loads like heaters, lamps, and solenoid valves.
The 25 A output current with a heat sink is the continuous rating you design to in a panel — without a heat sink the relay can handle 35 A, but that's a peak or short-duration figure, not a steady-state spec. The 5 to 24 VDC input range means it triggers reliably from a 24 V PLC output or a 5 V logic signal, with a nominal input current draw of 17.4 to 35 mA depending on the applied voltage. The Form A (SPST-NO) switch configuration and screw terminals keep wiring straightforward.
Deployment context
Surface-mounted to a panel or subplate — no DIN-rail clip on this one, so plan for screw-mounting with the appropriate heat sink. Finger-safe construction means the live terminals are shielded from accidental contact, which simplifies panel layout in open-frame builds. The LED indicator gives a quick visual on coil state during commissioning.