Siemens 3RT1054 Power Contactor, 115A, 55kW, 110V DC, SIRIUS S6 Original Brand New

Overview

The Siemens 3RT1054-2XF46-1LA2 power contactor is a high-performance switching device from the acclaimed SIRIUS 3RT10 series, specifically designed for reliably switching three-phase motors up to 55 kW (at 400 V). This robust, 3-pole contactor is rated for $115A$ under the standard AC-3 and the new energy-efficient AC-3e utilization categories, ensuring compliance with modern industrial requirements.

It features an advanced electronic drive with a wide 110V DC operating range and includes a versatile PLC input for seamless integration into complex automation systems. Its compact Size S6 design, combined with reliable busbar main connections and user-friendly spring-loaded control terminals, makes it an essential component for any demanding motor control application.

Key Benefit

• Optimized Performance: Rated for $115A$ and $55kW$, meeting the demands of high-power motor applications.
• Future-Proof: Complies with the latest AC-3e standard for efficient switching of highly efficient motors (IE3/IE4).
• Reliable DC Control: Features a wide-range 110V DC electronic drive for reliable operation, even with voltage fluctuations.
• PLC Integration: Includes a dedicated PLC input (24-110V DC) for direct interfacing with modern programmable logic controllers.
• Flexible Connection: Main circuit features robust busbar connections for high current, while control/auxiliary circuits utilize fast, vibration-proof spring-loaded terminals.
• Comprehensive Monitoring: Built-in 2 NO + 2 NC auxiliary contacts provide essential feedback for control and signaling circuits.

Function

The 3RT1054-2XF46-1LA2 functions as a crucial electro-mechanical switch in a motor starter or load feeder. When the 110V DC control voltage is applied to the electronic drive, it closes the three main contacts, allowing the $115A,400V$ load to pass through to the motor. It is primarily used for:

1. Switching three-phase AC motors (standard and high-efficiency).
2. Switching general resistive loads up to $160A$ (AC-1).
3. Acting as a central switching element in modern, energy-efficient control panels.

Technical Highlights

• Electronic Drive: Minimizes power consumption in the control circuit compared to conventional drives.
• Size S6: Compact physical size for its high performance rating.
• Upright Mounting: Optimized for standard cabinet installation.
• Auxiliary Contacts: 2 NO and 2 NC for versatile wiring of interlocking, signaling, and control functions.

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