3RH2911-1NF11 SIEMENS

The 3RH2911-1NF11 auxiliary switch block from Siemens is designed for front mounting on 3RH contactors and 3RT contactor relays. It features a combination of one normally open (NO) and one normally closed (NC) contact, providing versatile switching options for control circuits. This auxiliary switch block is equipped with screw terminals for secure and reliable electrical connections. The contact arrangement allows for signaling and interlocking functions within the control system. Specifically, the NO contact is associated with current path .3/.4, while the NC contact corresponds to current path .1/.2. This configuration facilitates monitoring the state of the main contactor or relay. The 3RH2911-1NF11 enhances the functionality of the main switching device by providing additional contacts for control and indication purposes. It is suitable for a wide range of industrial applications where reliable auxiliary switching is required. Its robust design ensures durability and long-term performance in demanding environments. This auxiliary switch block is an essential component for building comprehensive and efficient control systems.