
SIEMENS 3RH1921-1FA40 AUXILIARY SWITCH BLOCK New
Need something we currently don't have available? Our sourcing team can help you find what you need
Built for control panel and machine builders, the Siemens SIRIUS 3RH1921-1FA40 auxiliary switch block extends the signaling and interlocking capabilities of your contactors with dependable, accurate feedback. Designed for industrial automation environments, it helps implement status indication, permissive circuits and interlocks with consistent performance across a wide range of applications.
Its front-mount design integrates neatly with Siemens SIRIUS contactors, reducing assembly time and wiring complexity while maintaining a compact footprint in the control cabinet. A robust contact system provides stable switching for AC and DC control circuits, and screw terminals enable secure, service-friendly connections for reliable operation over the long term.
Whether you are standardizing a bill of materials or upgrading installed bases, the 3RH1921-1FA40 delivers a practical, cost-effective way to expand functionality without compromising on quality, and it is backed by a 1-year warranty to support your project commitments.
- Brand: Siemens
- Series: SIRIUS
- Model: 3RH1921-1FA40
- Mounting type: Front-mount auxiliary switch block
- Compatibility: SIRIUS 3RT/3RH contactors
- Connection type: Screw terminals
- Output type: Dry contact (auxiliary)