Siemens 3RH2911-2GA04 SIRIUS Auxiliary Switch 4 NC, Front-Mount, Spring-Loaded Terminals Original Brand New

Overview

The Siemens 3RH2911-2GA04 is a high-quality, front-mountable auxiliary switch from the SIRIUS line, designed to enhance the functionality of specific Siemens contactor relays. This compact and reliable module provides four normally closed (NC) contacts, offering a robust solution for signaling and control applications. Its innovative spring-loaded terminal technology ensures fast, secure, and vibration-proof wiring, significantly reducing installation time and maintenance efforts. Physically coded to prevent incorrect mounting, this auxiliary switch is compatible only with the Siemens 3RH2140 and 3RH2440 contactor relays, ensuring seamless integration and optimal performance in industrial control systems.

Key Benefit

• Reliable Performance: Engineered by Siemens, a global leader in industrial automation, for consistent and long-lasting operation.
• Fast and Easy Installation: Spring-loaded terminals allow for quick, tool-free wiring, saving time and labor costs.
• Vibration-Proof Connection: The robust spring-loaded mechanism provides a secure and reliable connection, even in demanding industrial environments subject to vibrations.
• Safety and Compatibility: The physical coding feature guarantees correct installation, preventing potential wiring errors and ensuring safe operation. It is specifically designed to work in tandem with 3RH2140 and 3RH2440 contactor relays, adhering to the EN 50011 standard.
• Space-Saving Design: Its front-mounting capability allows it to be integrated directly onto the contactor, minimizing the overall panel footprint.

Function

• Adds Four Normally Closed (NC) Contacts: Expands the switching capacity of the base contactor relay.
• Signal Transmission: Ideal for sending status signals to a PLC, HMI, or other control devices.
• Interlocking and Control: Used in safety circuits and complex control schemes for interlocking functions.
• Auxiliary Switching: Provides additional switching points for various control tasks, such as triggering lights, alarms, or other relays.

Technical Specification

• Product Number: 3RH2911-2GA04
• Contact Configuration: 4 NC (Normally Closed)
• Terminal Designations: 51/52, 61/62, 71/72, 81/82
• Current Path: 1 NC, 1 NC, 1 NC, 1 NC
• Mounting Type: Front-mountable
• Terminal Type: Spring-loaded terminal
• Coding: Physically coded
• Compatibility: Exclusively compatible with Siemens contactor relays 3RH2140 and 3RH2440 (according to EN 50011).

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