Siemens 3RH2911-1HA22 auxiliary switch block offers front-mounted, four-contacts to extend control circuits for Siemens SIRIUS 3RT2 contactors and 3RH2 relays. It provides two normally open (NO) and two normally closed (NC) contacts, wired via screw terminals at terminal pairs.1/.2 and.3/.4, with current paths configured as 1 NC, 1 NC, 1 NO, 1 NO. This accessory is designed for control-circuit signaling in motor controllers and automation panels, enabling status and feedback signals in a compact, front-mounted package.
