The Siemens 3RF3190-3AA04 is a 1-pole semiconductor relay from the SIRIUS 3RF31 family, in a 22.5 mm wide housing. It's rated for 90 A continuous load current at 48-460 VAC, with a 24 VDC control voltage. The ring cable lug connection is designed for mounting the relay onto a customer-supplied heatsink or panel surface — this is not a self-contained unit with an integral heatsink, so the thermal design is on you. The 90 A rating means this relay can handle substantial resistive or moderate inductive loads — think large heaters, industrial ovens, or motor starters in a panel where you need silent, bounce-free switching.
For compliance documentation: RoHS compliant since 15-Jan-2024, and REACH Article 33 declares lead (CAS 7439-92-1) above 0.1% w/w. No UL or CSA listing appears on the record, so verify site acceptance if your spec requires those marks.
Ring cable lug connection bolts to a metal surface that acts as the heatsink. 90 A rating assumes adequate thermal management. The 24 VDC control voltage is standard for PLC or relay logic outputs. No built-in snubber or MOV is mentioned, so for inductive loads like contactor coils or solenoid valves, add an external RC snubber or varistor across the load to protect the SSR from voltage spikes.