Siemens 3RT1966-5AR31 Changeover Operating Mechanism for 3RT126 Contactor, 440-480V AC/DC, Screw Terminal, Size S10 Original Brand New

Overview

The Siemens 3RT1966-5AR31 is a critical accessory designed to function as the changeover operating mechanism (often referred to as a withdrawable coil or solenoid coil) for the Siemens SIRIUS 3RT126 vacuum contactor, typically for size S10. This component is essential for energizing and controlling the main contactor, facilitating reliable switching operations in high-power industrial applications.

It is engineered for versatile AC/DC operation, specifically handling a control supply voltage range of 440 to 480 V across both 50 Hz and 60 Hz frequencies. The mechanism features a Standard/Economy circuit drive for optimized energy consumption and includes robust Screw Terminals for secure and straightforward electrical connection.

Key Features & Function

• Product Type: Changeover Operating Mechanism / Withdrawable Coil
• Compatibility: Designed for use with Siemens SIRIUS 3RT126 Vacuum Contactors (Size S10).
• Control Voltage: 440…480 V AC (50/60 Hz) / DC operation.
• Operating Principle: Standard/Economy circuit drive for efficient power management.
• Connection: Reliable Screw Terminal connection for control circuit wiring.
• Purpose: Enables the switching (ON/OFF) function of the main vacuum contactor.
• Brand & Quality: Genuine Siemens product, part of the proven SIRIUS industrial controls system, ensuring high reliability and long service life.

Benefit

• Enhanced Reliability: Guarantees the precise and dependable actuation of the 3RT126 contactor, minimizing downtime in critical systems.
• Flexible Application: Universal AC/DC voltage capability (440-480V) simplifies spare parts stocking and allows use in diverse power systems.
• Cost-Efficiency: The selectable Economy Circuit feature can reduce holding power consumption once the contactor is closed, leading to energy savings and reduced heat generation.
• Simple Maintenance: The changeover/withdrawable design allows for quick and easy replacement of the coil without completely disassembling the main contactor.
• Secure Wiring: Robust screw terminals provide a durable and reliable connection for industrial environments.

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