The Siemens 3RF3190-1AA24 is a SIRIUS 3RF31 solid-state relay, 1-pole, in a 22.5 mm housing. It is rated for 90 A continuous load current across a 48-460 VAC supply range, with a control voltage of 110-230 VAC. The screw terminal version is designed for mounting on available cooling surfaces — meaning the installer provides the heatsink, not the relay itself.
Integration notes
The 22.5 mm width matches standard DIN-rail component spacing, though the relay itself requires an external heatsink — plan for thermal management in the panel layout. The screw terminals accept the load and control wiring directly; no socket or base required. The control voltage range (110-230 VAC) means it can be driven directly from a line-voltage PLC output or a separate control transformer.