Siemens 3RH2911-1AA01 SIRIUS Front Auxiliary Switch, 1NC, Screw Terminal for 3RT2/3RH2 Contactors Original Brand New

Overview

The Siemens 3RH2911-1AA01 is a high-quality, front-mounted auxiliary switch block from the SIRIUS modular system, designed to seamlessly integrate with Siemens 3RT2 power contactors and 3RH2 contactor relays. This essential component expands the control circuit capabilities of your contactor, providing reliable feedback and signaling.

It features a single Normally Closed (NC) contact, clearly identified by terminal designations 71/72, and utilizes robust screw terminals for secure, top-entry cable connection. Its snap-on mounting ensures quick, tool-free installation and optimal performance in industrial control applications.

Benefit

• Seamless Integration: Designed specifically for the SIRIUS 3RT2 contactor and 3RH2 contactor relay series, ensuring perfect fit and function.
• Reliable Performance: Features a positively driven NC contact, compliant with IEC 60947-5-1, making it suitable for safety and interlocking circuits.
• Quick Installation: Simple front snap-on mounting allows for tool-free installation, significantly reducing assembly time.
• Durable Connection: The robust screw terminal connection guarantees a secure and reliable electrical path for industrial environments.
• Enhanced Control: Adds an essential Normally Closed contact to your control circuit for signaling, interlocking, and status indication.

Function

The 3RH2911-1AA01 auxiliary switch is used to expand the number of auxiliary contacts on a main contactor or contactor relay. When the main contactor is de-energized, the 1 NC contact (71/72) is closed, providing a control signal. When the main contactor is energized, the NC contact opens, changing the state in the control circuit. This is crucial for interlocking circuits, indication lights, and logic control within automation panels.

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