What the G3TB-OA202PZ DC5-24 is
G3TB-OA202PZ DC5-24 from Omron is a solid state relay built for direct soldering onto a printed circuit board, classified as a board-mount relay for PC board integration rather than a socketed or DIN-rail module (cites:,). It falls under the broader Solid State Relays category on the line card, sitting in the Electronic Parts and Devices top-level grouping, so it is sourced and handled as an electronic component rather than a panel-mounted device (cites:,).