Siemens 3RH2911-1XA40-0MA0 SIRIUS Auxiliary Switch, 4 NO, Front Mount, Screw Terminal Original Brand New

Overview

The Siemens 3RH2911-1XA40-0MA0 is a high-quality SIRIUS auxiliary switch designed for seamless integration with Siemens 3RT2 contactors and 3RH2 contactor relays. This front-mount auxiliary switch provides four normally open (NO) contacts, essential for expanding the functionality and control capabilities of your industrial applications. Its robust design and reliable screw terminals ensure a secure and long-lasting connection in various automation and control systems.

Key Benefit

• Enhanced Control: Adds four normally open contacts to your existing 3RT2 and 3RH2 devices, allowing for more complex control circuits and signaling.
• Easy Installation: Front-mounting design simplifies installation and saves space, making it ideal for compact control panels.
• Reliable Connections: Features screw terminals for a secure, vibration-resistant, and maintenance-friendly electrical connection.
• Compatibility: Specifically engineered to work perfectly with the Siemens 3RT2 and 3RH2 product lines, ensuring optimal performance and safety.
• Durable and Robust: Built to the high standards of Siemens SIRIUS products, guaranteeing long-term reliability in demanding industrial environments.

Function

This auxiliary switch functions by providing additional contact points for various control and signaling applications. The four normally open (NO) contacts are designated with the terminal numbers 53/54, 63/64, 73/74, and 83/84. When the main contactor or relay is energized, these contacts close, allowing a secondary circuit to be completed. This is crucial for:

• Feedback and Status Indication: Signaling the status of the main contactor to a PLC or control system.
• Interlocking Circuits: Creating safety interlocking systems to prevent unintended machine operation.
• Auxiliary Control: Operating indicator lamps, small relays, or other low-power devices.
• Bypass and Holding Circuits: Implementing complex control logic within your automation setup.

Technical Specification

• Product Number: 3RH2911-1XA40-0MA0
• Type: Auxiliary Switch, Front Mount
• Number of Contacts: 4 Normally Open (NO)
• Terminal Designations: 53/54, 63/64, 73/74, 83/84
• Connection Type: Screw Terminal
• Compatibility: Siemens 3RT2 Contactors and 3RH2 Contactor Relays

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