What this RC suppressor does and where it fits
The 3RT1926-1CB00 is a SIRIUS RC-element surge suppressor designed to mount directly onto Siemens Size S0 contactors, suppressing voltage spikes from the coil when it de-energizes.
Lifecycle reality — phased out, successor ready
This part is a phased-out product per Siemens. The preferred successor is 3RT2926-1CB00, which drops into the same S0 footprint and covers the same voltage range. For new builds or BOM updates, the successor is the recommended path. For existing installations needing a like-for-like spare, the 3RT1926-1CB00 is still sourced through independent distribution against an RFQ.
Temperature limits and compliance baseline
RoHS compliance date is marked as 07/01/2006 — the part meets the original EU RoHS deadline.