Siemens 3RT1975-5AS32 Changeover Operating Mechanism for 3RT107/3RT127/3RT147 Contactors 500-550V AC/DC Original Brand New

Overview

The Siemens 3RT1975-5AS32 is a high-performance changeover operating mechanism designed specifically for the SIRIUS series of Siemens contactors, including models 3RT107, 3RT127, and 3RT147. This essential component ensures reliable and seamless switching operations, making it ideal for a wide range of industrial control applications. With its versatile AC/DC operation and robust design, the 3RT1975-5AS32 provides a secure and efficient solution for your electrical systems.

Key Benefit

• Optimized Performance: Engineered to perfectly complement Siemens 3RT contactors, guaranteeing smooth and reliable changeover functions.
• Universal Voltage: Operates efficiently on both AC (50-60 Hz) and DC power supplies within a 500-550 V range, providing flexibility in various setups.
• Enhanced Reliability: Features a robust “Standard, economy circuit” operating mechanism for stable and consistent performance over the long term.
• Fast and Secure Installation: Utilizes modern spring-type terminals, allowing for quick, tool-free wiring and ensuring a vibration-proof connection.
• Saves Space: Its compact design integrates seamlessly with the associated contactors without requiring significant additional panel space.
• Cost-Effective: The “economy circuit” feature helps reduce power consumption during operation, leading to lower energy costs.

Function

The Siemens 3RT1975-5AS32 acts as the control interface for a pair of SIRIUS 3RT contactors. When integrated, it facilitates a changeover function, enabling the electrical system to switch between two different circuits (e.g., from a main power source to a backup generator or between different motor directions). The operating mechanism receives the control signal and mechanically switches the contactors, ensuring that one circuit is opened before the other is closed.

This “break-before-make” action is critical for preventing short circuits and ensuring the safety and integrity of the connected equipment. The spring-type terminals provide a reliable electrical connection that resists loosening from vibration, which is a common issue in industrial environments.

Technical Specification

• Product Type: Changeover Operating Mechanism
• Product Number: 3RT1975-5AS32
• Compatible Contactors: Siemens SIRIUS 3RT107, 3RT127, 3RT147
• Operating Voltage: 500 – 550 V
• Operating Frequency: 50…60 Hz (AC operation)
• Operating Mechanism: Standard, economy circuit
• Terminals: Spring-type terminal
• Manufacturer: Siemens
• Series: SIRIUS

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