Siemens 3RT1975-5AP31 SIRIUS Changeover Operating Mechanism for 3RT107/3RT147 Contactors, 220-240V AC/DC, Screw Terminal Original Brand New

Overview

The Siemens 3RT1975-5AP31 Changeover Operating Mechanism is an essential accessory for the high-performance SIRIUS line of power contactors, specifically designed for use with 3RT107 and 3RT147 models. This is a crucial component for controlling the main contacts of the contactor. It features a versatile AC (50-60 Hz) / DC operation with a wide control supply voltage range of 220…240 V.

The mechanism supports both Standard and economy circuit operation, optimizing performance for different application requirements. Installation is secure and reliable via Screw terminals. As a genuine Siemens component, the 3RT1975-5AP31 ensures seamless integration and reliable long-term performance in industrial control systems.

Key Benefit

• Versatile Operation: Supports both AC and DC control voltages (220-240V), simplifying inventory and compatibility across different power systems.
• Cost-Effective Maintenance: Replacing just the changeover operating mechanism (coil) is a lower-cost alternative to replacing the entire contactor, extending the lifespan of your industrial equipment.
• Energy Efficiency: The integrated economy circuit feature can reduce holding power consumption, leading to energy savings and reduced heat generation in the control panel.
• High Reliability: Manufactured by Siemens under the SIRIUS brand, ensuring high quality, reliable operation, and a long service life.
• Easy Installation: Designed for straightforward replacement and connection with robust screw terminals.

Function

The 3RT1975-5AP31 mechanism serves as the electrical drive component, or solenoid coil, for the compatible power contactors. When the specified control voltage (220-240 V AC/DC) is applied, the coil is energized. This action mechanically drives the contactor’s main contacts to switch the power to the motor or load. The changeover operating mechanism provides the force necessary for reliable switching, making it critical for motor starting, stopping, and general industrial load switching applications where the 3RT107 or 3RT147 contactors are used.