Siemens 3RT1975-5AB31 Changeover Operating Mechanism AC/DC 23-26V Coil for SIRIUS 3RT107 & 3RT147 Contactors Original Brand New

Overview

The Siemens 3RT1975-5AB31 Changeover Operating Mechanism is a critical accessory for the SIRIUS 3RT1 series of power contactors, specifically designed for use with the 3RT107 and 3RT147 contactor models (Size S12). This robust and versatile operating mechanism, often referred to as a coil, ensures reliable performance and operational flexibility in industrial control applications.

It features a universal control voltage range of 23-26V for both alternating current (AC 50/60 Hz) and direct current (DC) applications, simplifying stock-keeping and installation. The unit is engineered for optimal efficiency with both a Standard and economy circuit, providing reduced holding power and energy savings once the contactor is closed. Connection is made easy and secure via Screw Terminals.

Key Benefit

• Universal AC/DC Control: Compatible with a wide control voltage range of 23-26V for both AC (50/60 Hz) and DC power, offering maximum flexibility.
• Energy Efficiency: Incorporates an advanced economy circuit function to significantly reduce continuous holding power consumption after the contactor has been actuated.
• Contactor Compatibility: Perfectly matched for a direct fit and seamless operation with the high-performance Siemens SIRIUS 3RT107 and 3RT147 power contactors.
• Reliable Connection: Equipped with secure and widely-used Screw Terminals for a dependable electrical connection in demanding environments.
• Extended Contactor Lifespan: As a genuine Siemens replacement/accessory, it ensures the contactor operates within original manufacturer specifications, contributing to a longer service life for the entire unit.

Function and Technical Detail

The 3RT1975-5AB31 serves as the solenoid coil that creates the magnetic force necessary to close and hold the main contacts of the power contactor. Its changeover operating mechanism design provides precise control over the contactor’s state.

• Product Number: 3RT1975-5AB31
• Brand: Siemens SIRIUS
• Product Type: Changeover Operating Mechanism / Contactor Coil (Withdrawable Coil for Size S12)
• Compatibility: Siemens Contactors 3RT107, 3RT147 (and potentially 3RT127)
• Control Voltage (UC): 23…26 V AC (50/60 Hz) / 23…26 V DC
• Mechanism Type: Standard, economy circuit
• Terminal Type: Screw terminal
• Weight (Approx.): 1.436 kg

Application

This mechanism is an essential spare part or optional accessory for power distribution and control systems utilizing Siemens SIRIUS 3RT1 contactors in applications such as:

• Motor control and starting
• Switching resistive loads
• Industrial automation machinery
• Building technology systems

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