Siemens – 3RH1911‑2FA22 – Sirius S00 Snap‑on Auxiliary Switch Block, 2 NO + 2 NC

Main Features

• Manufacturer: Siemens – Sirius Classic series  

• Model/MPN: 3RH1911‑2FA22

• Device Type: Auxiliary snap-on switch block for motor starters and contactors (Size S00)  

• Contact Configuration: 4 poles – 2 Normally Open (NO) + 2 Normally Closed (NC)  

• Current/Voltage Ratings: 10 A resistive at up to 690 VAC per contact  

• Connection Type: Spring‑type or cage‑clamp terminals; DIN EN 50005 front‑mount design  

• Mechanical / Electrical Endurance:

  • Mechanical lifetime: ~10 million cycles

  • Electrical endurance: ~200,000 cycles (AC‑15/230 V)  

• Environmental & Protection:

  • Front-side IP20 protection

  • Operating –25 °C to +60 °C; storage –55 °C to +80 °C  

  • Insulation withstand voltage: 690 V; impulse resistance: 6 kV  

• Mounting & Form Factor:

  • Snap attaches to front of S00-size contactors (e.g. 3RT1015–RT1617 range)

  • Lightweight (~60 g), compact block  

• Lifecycle Note: Discontinued by Siemens; direct replacement available – 3RH2911‑2FA22 Sirius S0 series