Siemens 3RH1921-1-1CA01 Auxiliary Contact Block Lot of 2

The Siemens 3RH1921-1-1CA01 auxiliary contact block expands control circuit functionality by adding supplementary switching contacts to motor starters and contactors. This lot includes two units, providing redundant switching capability for interlocking, signaling, and status monitoring applications. Designed for seamless integration with Siemens SIRIUS control components, these blocks deliver reliable contact performance across industrial duty cycles. The compact modular design allows straightforward mounting without requiring extensive rewiring or system reconfiguration. Ideal for complex automation sequences, safety interlocks, and diagnostic feedback circuits, these auxiliary contacts enhance system flexibility while maintaining the robustness demanded by manufacturing environments.

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