The Siemens 3RT1924-5AG61 is a SIRIUS magnet coil designed for Size S0 contactors with screw terminals. It operates on AC control supply voltage, rated at 100 V at 50 Hz and 110 V at 60 Hz, drawing 0.8 to 1.1 A at 50 Hz. This is a phased-out product; the official preferred successor is the SIRIUS 3RT2924-5AG61.
This coil is marked as a phased-out product. The manufacturer lists the SIRIUS 3RT2924-5AG61 as the official preferred successor type. For a line-down replacement on a panel originally built with the 3RT1924-5AG61, the 3RT2924-5AG61 is the direct drop-in intended by the manufacturer.
This is a replacement coil, not a complete contactor. It mounts onto the Size S0 contactor frame (screw terminal variant). The AC coil draw of 0.8 to 1.1 A at 50 Hz is the inrush/holding current range — important for verifying the control transformer sizing in the panel.