The Siemens 3RF3150-1AA24 is a SIRIUS 3RF31 solid-state relay, one-pole, in the 22.5 mm DIN-rail housing. It is rated for 50 A continuous load current, with a load voltage range of 48-460 V AC and a control voltage of 110-230 V AC, terminated with screw terminals. This is the part you spec when you need a maintenance-free, no-contact switching solution for resistive or light inductive loads in a control panel — no coil wear, no contact bounce, and silent operation. The 50 A rating is the continuous RMS current the SSR can carry at its rated voltage. The 48-460 V AC load range covers common single-phase line voltages.
RoHS compliance is confirmed since January 15, 2024. No other SVHC substances are flagged in the evidence.
The 22.5 mm width is the standard SIRIUS 3RF3 footprint. Packaging dimensions are 104.00 x 44.00 x 48.00 mm. Because it is a solid-state relay, there is no coil dropout voltage to worry about, but the control circuit draws a small current even when off (leakage through the optocoupler). The 110-230 V AC control input is universal for most industrial AC control voltages — just ensure the control supply is within that range and is AC (not DC, despite the 'AA' in the code indicating AC control).