The Auxiliary Switch Block from Siemens is a versatile auxiliary switch specifically designed to expand auxiliary contacts in control circuits. With four normally open contacts, this switch provides a reliable solution for various applications in drive technology. Installation is simple and tool-free, allowing for quick setup. The switch is physically coded and can only be combined with auxiliary relays 3RH2140 and 3RH2440, enhancing safety and reliability. The use of spring-loaded terminals ensures a stable electrical connection. The Auxiliary Switch Block is available in both front and side mounting options, offering flexibility in application. It is part of the SIRIUS modular system, known for its efficiency and modernity.

• Four normally open contacts for flexible applications
• Tool-free mounting on relays 3RT2 and 3RH2
• Physically coded for secure combination
• Spring-loaded terminals for stable electrical connections.