3RH2911-1HA31 SIEMENS

The 3RH2911-1HA31 auxiliary switch from Siemens is designed for front mounting on 3RH contactors and 3RT contactor relays, enhancing their switching capabilities. This auxiliary switch features a configuration of 3 normally open (NO) contacts and 1 normally closed (NC) contact, providing versatile options for signaling and control circuits. The current paths are specifically designed with 1 NC contact and 3 NO contacts, optimized for seamless integration with 3RH contactors and 3RT contactor relays. Screw terminals ensure secure and reliable connections. The contact designations are .1/.2 for the NC contact, .1/.2 for the first NO contact, .3/.4 for the second NO contact, and .3/.4 for the third NO contact, facilitating easy identification and wiring. This auxiliary switch expands the functionality of the main device by providing additional contacts for interlocking, signaling, or control purposes. Its robust design ensures reliable performance in demanding industrial environments. By adding this auxiliary switch, users can enhance the control and monitoring capabilities of their motor control systems. It is an essential component for creating sophisticated and reliable control circuits.