Siemens 3RT1975-5AB32 SIRIUS Changeover Operating Mechanism for 3RT107, 3RT127, 3RT147 Contactors, AC/DC 23-26V Coil, Spring-Type Terminal Original Brand New

Overview

The Siemens 3RT1975-5AB32 is a high-performance Changeover Operating Mechanism designed specifically as a replacement or spare part for the heavy-duty SIRIUS 3RT1 power contactors. This versatile solenoid coil accessory is compatible with the 3RT107, 3RT127, and 3RT147 series contactors, ensuring seamless integration and reliable function within industrial control systems. It is engineered for universal control, supporting both AC (50-60 Hz) and DC operation.

Key Specification

• Product Number: 3RT1975-5AB32
• Brand: Siemens SIRIUS
• Accessory Type: Changeover Operating Mechanism (Solenoid Coil)
• Contactor Compatibility: 3RT107, 3RT127, 3RT147
• Control Supply Voltage: 23 … 26 V (UC)
• Operation: AC (50…60 Hz) / DC
• Operating Mechanism Modes: Standard Circuit, Economy Circuit
• Terminal Type: Spring-type terminal
• Product Life Cycle Status: Active Product (as per Siemens)

Benefit

• Universal Compatibility: Works across a range of high-current SIRIUS 3RT1 contactors (3RT107, 3RT127, 3RT147), simplifying inventory and maintenance.
• Flexible Control: Dual AC/DC operation capability (23-26V) allows for use in diverse control voltage environments.
• Energy Efficiency: Features a selectable Economy Circuit mode, reducing power consumption and operating costs during continuous operation.
• Reliable Connection: Utilizes robust Spring-type terminals for fast, vibration-proof, and maintenance-free wiring, improving system reliability.
• Genuine Quality: A genuine Siemens SIRIUS accessory, guaranteeing optimal performance and longevity for your contactor system.

Function

The 3RT1975-5AB32 operating mechanism is the core component that generates the magnetic force required to close (pick-up) and hold closed (hold) the main contacts of the attached power contactor. It allows the contactor to be controlled by a low-voltage (23-26V) signal, isolating the control circuit from the high-power circuit. The Changeover function enables a flexible switching response, while the Standard/Economy Circuit feature manages power consumption, using higher power for initial pick-up and then dropping to a lower holding power in economy mode.

Application

Ideal for use in various industrial and commercial applications requiring reliable motor control and switching, including:

• HVAC systems
• Pumping stations
• Conveyor systems
• Machine tools
• Industrial automation and control panels

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