Siemens 3RH2911-1HA13 is a front-mounted auxiliary switch block for Siemens 3RT2 contactors and 3RH2 auxiliary relays, delivering four contact paths: one normally open (NO) and three normally closed (NC). Terminal pairs are arranged as three NC contacts on terminals 1/2 and a single NO contact on terminals 3/4, with screw terminals for secure wiring. This auxiliary switch provides control feedback in motor‑control circuits, rated for AC-15 operation at 230 V with typical endurance up to 200,000 operating cycles.
