The Siemens SIRIUS 3RT2916-1CB00-ZX90 is an RC-element surge suppressor sized for the S00 contactor frame. It clips directly onto the contactor coil terminals — no extra wiring or DIN-rail space needed. The 9 mm depth means it adds almost nothing to the panel depth when mounted on a standard 35 mm rail, and the 28 mm width keeps it within the contactor's own footprint.
Voltage range and coil compatibility
This suppressor covers AC coils from 24 to 48 V at both 50 and 60 Hz, and DC coils from 24 to 70 V. That's a single part number for mixed-voltage panels where some contactors run on 24 VDC control and others on 48 VAC — the RC element handles both without a separate selection. The AC/DC input type means the same unit works across both supply families, simplifying BOM management.
Clip-on fastening to the contactor coil terminals — no tools, no bracket. The suppressor sits in any mounting position, so it works in vertical or horizontal panel layouts without derating. The -25 to +60 °C operating range covers most control cabinet environments; storage from -40 to +80 °C handles shipping and warehouse extremes.