Siemens SIRIUS auxiliary switch block, 1NO+1NC, side-mount, screw terminal, Size S0...S12, 3RH1921-1DA11-0KR0.
| Parameter | Value |
|---|---|
| Weight | 1.36 kgs |
This is a Siemens SIRIUS auxiliary switch block, order code 3RH1921-1DA11-0KR0, with one normally-open and one normally-closed contact. It mounts laterally on contactors in the Size S0 through S12 frame range, using the EN 50012 interface. The 10 mm screw terminals accept standard panel wiring.
The manufacturer lists this part as a phased-out product. The official successor is the SIRIUS 3RH2 series.
This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
The official successor is the SIRIUS 3RH2 series, which uses the same mounting footprint and contact configuration.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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