Siemens 3RT1975-5AF32 Changeover Operating Mechanism, 110-127V AC/DC Original Brand New

Overview

The Siemens SIRIUS 3RT1975-5AF32 is a vital accessory, specifically a Changeover Operating Mechanism (Solenoid Coil), designed for use with the high-performance Siemens 3RT1 series power contactors, specifically models 3RT107, 3RT127, and 3RT147 (Sizes S6/S10/S12).

This mechanism enables the electrical control and switching of the main contactor by generating the magnetic force required for operation. It supports a versatile AC (50-60 Hz) and DC control supply voltage range of 110 V to 127 V. Featuring reliable Spring-type terminals, the 3RT1975-5AF32 ensures fast, secure, and vibration-proof wiring, minimizing installation and maintenance time in industrial control applications.

Benefits & Advantages

• Universal Voltage Control: True AC/DC operation (110-127V) allows for simplified selection and application flexibility across different control systems, reducing stock complexity.
• High Reliability: As a genuine Siemens SIRIUS component, it guarantees optimal performance, durability, and reliable switching with compatible 3RT1 contactors.
• Fast & Secure Wiring: The innovative Spring-type terminal technology provides a gas-tight, vibration-resistant connection, drastically cutting down installation time and eliminating the need for periodic screw retightening.
• Designed for Heavy-Duty Contactors: Perfectly matched for the high-current switching capabilities of the 3RT107, 3RT127, and 3RT147 contactor series.
• Cost Efficiency: Minimizes downtime and maintenance due to its robust and reliable connection method.

Function

The 3RT1975-5AF32 functions as the heart of the contactor’s electrical control system. When the specified control voltage (110-127V AC or DC) is applied to its terminals, it energizes the coil to create a magnetic field. This field pulls the armature, changing the position of the main contacts, which in turn switches the power on or off to the connected load (e.g., motor). The ‘Changeover Operating Mechanism’ designation indicates it’s the core electrical drive for the contactor’s switching function.

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