NEW Siemens 3RH1921-1LA11 Auxiliary Switch Block 1NO+1NC SIRIUS Contactor DIN

All the best /Klaus

Brand new, never used Siemens 3RH1921-1LA11 auxiliary switch block—ideal for extending contacts on SIRIUS contactor relays in control panels and automation.

• Brand: Siemens

• Model: 3RH1921-1LA11

• Condition: New in original box, never used. Clean terminals, all parts present (see photos).

• Technical Specifications:

  • Configuration: 1 NO (Normally Open) + 1 NC (Normally Closed) contact

  • Voltage rating: Up to 690V AC/DC (IEC 60947-5-1)

  • Current rating: 10A maximum

  • Mounting: Snap-on, front mount for SIRIUS S0, S2, S3, S6, S10, S12 contactors, fits standard DIN EN50005

  • Terminals: Screw type (top entry)

  • Auxiliary function: Additional signal contacts for control/status indication

• Main Features:

  • Simple and secure installation—no extra tools needed, compatible with Siemens SIRIUS contactors, motor starters, and relays

  • Extends control and feedback capability for automation, safety circuits, and motor protection

  • Robust and reliable, suitable for OEM panel building, upgrades, and industrial field repairs

• Background / Collector Info:

  • Siemens is globally recognized for quality automation and industrial control

  • This model is popular among OEMs, electrical contractors, and industrial technicians for expansion and maintenance

Ships fast from Denmark in original Siemens box—see photos for condition and part label.