The auxiliary switch for contactors from Siemens is a reliable solution for expanding auxiliary contacts in the control circuit. With a flexible design, this auxiliary switch allows for easy tool-free installation, significantly simplifying the setup process. It is compatible with contactors 3RT2 and auxiliary contactors 3RH2, offering up to four instantaneous switching contacts and up to two early-make contacts. The auxiliary switches are available in various versions, can be mounted from the front or the side, and can be used as forcibly guided contact elements. Thanks to the continuous screw and spring clamp connections, the auxiliary switch is suitable for both AC and DC applications. The SIRIUS system modular design ensures ease of use and high efficiency in application.

• Tool-free installation for easy setup
• Up to four instantaneous switching contacts
• Can be used as forcibly guided contact elements
• Suitable for AC and DC applications.