The Siemens 3RF3190-1AA06 is a 1-pole SIRIUS 3RF31 solid-state relay in the 22.5 mm wide housing. It is rated for 90 A continuous load current across a 48-600 VAC supply, controlled by a 24 VDC input. The 22.5 mm width fits standard DIN-rail enclosures, but the 'for mounting on available cooling surfaces' note is critical: this relay dissipates heat through its baseplate and requires a properly sized heatsink or panel-mount surface to carry the full 90 A. Without adequate thermal management, the current must be derated per the manufacturer's curve.
This class of solid-state relay is used in industrial control panels for switching heater loads, lamp banks, solenoids, and motor contactor coils where silent, bounce-free switching is needed. The 1-pole configuration handles single-phase loads. The 48-600 VAC range covers common global line voltages (230 VAC, 400 VAC, 480 VAC) without needing a different variant.
RoHS compliant since 15-01-24. No UL or CSA listing is stated in the available documentation.
Screw terminal connections for line and load. The 22.5 mm width matches standard DIN-rail terminal block spacing. The relay requires an external heatsink or panel-mount surface for heat dissipation — it is not self-cooled. Verify the mounting surface's thermal capacity against the 90 A load before commissioning.