Auxiliary Switch Block for 3RT2 and 3RH2
The Siemens 3RH2911-1HA12-Z W97 is a front-mounted auxiliary switch block designed for 3RT2 contactors and 3RH2 contactor relays. It provides one normally open and two normally closed contacts, wired via screw terminals, with the NO on the third contact position. Listed as active — valid for new builds and spares.
Integration Fit
Mounts directly to the front of 3RT2 contactors or 3RH2 contactor relays. The 1 NO + 2 NC configuration gives you a spare NC for feedback or interlocking while keeping one NC free for the holding circuit. Screw terminals match standard panel wiring practice — no special tooling needed.