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9x Siemens 3RH1921-1CA10 Auxiliary Contact Block 1NO Front Mount for 3RT1 / 3RH1
Model: Siemens SIRIUS 3RH1921-1CA10 snap‑on auxiliary switch block with 1 normally open (1NO) contact.
Ratings: 10 A general use up to 690 V AC, insulation voltage 690 V, surge voltage 6 kV; conforms to IEC 60947‑5‑1 and is UL/CSA listed.
Mounting / compatibility: Front/top‑mounted block with screw terminals, suitable for Siemens SIRIUS contactors and relays size S0–S12 (3RT102/3/4 and related 3RH1 relays).
Function: Provides an additional auxiliary 1NO contact for signaling, interlocking or PLC inputs in motor control panels.
Condition section
Lot of 9 modules removed from working equipment; plastic housings, latches and terminals in good cosmetic shape.
Light cosmetic wear from prior installation; labels remain readable and terminal screws turn freely.
