Description
Siemens 3RH2911-1FA22 Auxiliary Switch Overview
The Siemens 3RH2911-1FA22 is a side-mount auxiliary switch block designed for use with Siemens 3RT and 3RH series contactors and contactor relays. Featuring a 2NO/2NC (two normally open, two normally closed) contact configuration with screw-type terminals, this auxiliary switch provides dependable supplementary switching for control circuits in HVAC, industrial, and building automation applications.
Key Features
- 2NO/2NC contact configuration for versatile control circuit integration
- Screw-type terminal connections for secure, tool-assisted wiring
- Side-mount design compatible with Siemens 3RT and 3RH series contactors
- Compact, snap-on installation for fast field assembly
- Suitable for use in motor starters, contactors, and control relay applications
- Designed for use in commercial and industrial HVAC control panels
Applications
- Auxiliary control and signaling circuits on motor starters
- Interlocking and status indication in HVAC control panels
- Building automation and electrical distribution systems
- Industrial machinery and process control equipment
Why Choose the Siemens 3RH2911-1FA22
Siemens auxiliary switches are engineered for long service life and consistent performance in demanding environments. The screw terminal design ensures a vibration-resistant connection, while the 2NO/2NC contact arrangement offers maximum flexibility for both interlock and feedback circuits. This switch block is a trusted solution for HVAC technicians and electrical contractors who require reliable auxiliary contact expansion on Siemens contactor assemblies.
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