Siemens SIRIUS 3RH2911-2XA40-0MA0 Auxiliary Switch Block, Front Mount, 4 NO, Spring Terminal Original Brand New

Overview

The Siemens 3RH2911-2XA40-0MA0 is a high-quality, front-mounted auxiliary switch block from the SIRIUS line, designed to expand the control and signaling capabilities of SIRIUS 3RT2 Power Contactors and 3RH2 Contactor Relays. This instantaneous switching module features 4 Normally Open (NO) contacts, providing reliable status feedback and interlock control circuits. Its innovative spring-loaded terminal technology ensures fast, vibration-proof, and maintenance-free wiring for seamless integration into your control system.

Key Features / Function

• Part Number: 3RH2911-2XA40-0MA0
• Product Type: Auxiliary Switch Block (Instantaneous)
• Mounting Location: Front-mountable, snaps onto the contactor/contactor relay base unit.
• Contact Configuration: 4 NO (Normally Open) instantaneous contacts.
• Terminal Designation: Clearly marked terminal numbers (53/54, 63/64, 73/74, 83/84) for quick identification of the current paths (1 NO, 1 NO, 1 NO, 1 NO).
• Connection Type: Spring-loaded terminals (Spring-type terminal connections) for quick, reliable, and tool-free wiring.
• Compatibility: Specifically designed for use with the SIRIUS range: 3RT2 Contactors (Sizes S00 to S3) and 3RH2 Contactor Relays.
• Safety Features: Includes product function of “positively driven operation” according to IEC 60947-5-1 (with 3RH2) and “mirror contact” according to IEC 60947-4-1 (with 3RT2), essential for safety-related applications.
• High Reliability: Typical mechanical service life of 10 million operating cycles.
• IP Protection: IP20 on the front.

Benefit

• Enhanced Control: Easily add four extra Normally Open contacts to your base contactor/relay for complex control and signaling requirements.
• Fast Installation: Front snap-on mounting allows for quick and secure installation without tools.
• Time-Saving Wiring: Spring-loaded terminal technology reduces wiring time significantly compared to screw terminals, saving labor costs.
• Maintenance-Free: The robust spring connection provides a reliable, permanent connection that is resistant to vibration and thermal cycling, minimizing maintenance needs.
• Universal Compatibility: Versatile accessory for a wide range of SIRIUS 3RT2 contactor sizes (S00, S0, S2, S3) and 3RH2 contactor relays.

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