3RH2911-1GA13 SIEMENS

The 3RH2911-1GA13 is a front-mounted auxiliary switch designed for use with Siemens contactor relays. This auxiliary switch features a configuration of 1 normally open (NO) and 3 normally closed (NC) contacts, providing versatile switching options for control circuits. The current paths are arranged as 1 NO, 1 NC, 1 NC, and 1 NC, catering to a variety of control applications. It is specifically designed for contactor relays of size S00 and utilizes screw terminals for secure and reliable connections. The physical coding ensures that it can only be combined with contactor relays 3RH2140* and 3RH2440* (according to EN 50011), preventing mismatching and ensuring proper operation. The auxiliary switch contacts are identified as 51/52, 61/62, 71/72, and 81/82 according to standard conventions. This ensures easy integration into existing control systems and facilitates troubleshooting. The front mounting design simplifies installation and maintenance, allowing for convenient access to the auxiliary switch. It enhances the functionality of the contactor relay by providing additional contacts for signaling, interlocking, or other control functions. This auxiliary switch is ideal for applications requiring reliable and versatile auxiliary switching capabilities in conjunction with Siemens contactor relays.