The Siemens SIRIUS 3RT2946-1CD00 is a surge suppressor built as an RC element, sized for S3 contactors in the 3RT2.4 family. The RC snubber suppresses voltage spikes from inductive loads, protecting PLC outputs and extending contactor life on frequently cycled circuits.
Dimensions are 23 mm deep, 25 mm wide, 55 mm tall — a compact add-on block that clips directly onto the contactor or mounts adjacent on the DIN rail. The S3 size matches the 3RT2.4 contactor footprint, so it slots into the existing panel layout without re-spacing.
Lifecycle status is active (current production). RoHS compliance date is marked as 2006-07-01, covering the EU directive scope.
