Siemens 3RT1056-6XF46-0LA2 Power Contactor 185A, 90kW, 110V DC, Rail Application Original Brand New

Overview

The Siemens 3RT1056-6XF46-0LA2 is a high-performance 3-pole power contactor engineered for demanding industrial and rail applications. This model is part of the SIRIUS 3RT series and is designed to handle a wide range of loads, featuring a rated operational current of 185 A at 400 V and a motor power rating of 90 kW. It is specifically optimized for applications requiring extended rated conditions, making it an ideal choice for the railroad industry where reliability and durability are paramount.

The contactor operates with a 110 V DC electronic drive and includes a PLC input for flexible control (24-110 V DC). Its robust design is complemented by practical connection methods: a busbar for the main circuit and screw terminals for the control and auxiliary circuits. It comes equipped with two normally open (NO) and two normally closed (NC) auxiliary contacts, providing versatile control options. The 3RT1056-6XF46-0LA2 meets the stringent requirements of the IEC 60077 standard, confirming its suitability for rail applications.

Key Features & Benefit

High Power Handling: Rated for 185 A and 90 kW, it’s suitable for large motors and heavy-duty industrial loads.

• Railroad Certified: Adheres to IEC 60077 standards, ensuring compliance and reliable operation in rail environments.
• Flexible Control: Features a wide-range PLC input (24-110 V DC), allowing for seamless integration into various control systems.
• Versatile Auxiliary Contacts: Includes 2 NO + 2 NC auxiliary contacts, enabling complex control schemes and signaling.
• Reliable Electronic Drive: The 110 V DC electronic coil ensures efficient and reliable switching, with a wide voltage tolerance (0.7-1.25 x Uc).
• Robust Connections: Offers a secure busbar connection for the main circuit and screw terminals for the control circuit, simplifying installation and maintenance.

Function

The Siemens 3RT1056-6XF46-0LA2 functions as an electrically controlled switch used to turn a power circuit on and off. It is primarily used for controlling electric motors and other heavy-duty loads. The electronic drive with its integrated PLC input allows for precise and reliable remote control, making it a critical component in automated systems. Its compliance with IEC 60077 means it can withstand the vibrations, temperature fluctuations, and electrical transients common in railway applications, ensuring the safety and operational continuity of rail systems.

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