Siemens 3RT1066-6XJ46-0LA2 Power Contactor 300A, 160kW, 72V DC Coil Original Brand New

Overview

The Siemens 3RT1066-6XJ46-0LA2 is a high-performance, three-pole power contactor engineered for demanding industrial and specialized applications, particularly within the rail industry. As part of the SIRIUS 3RT series, this contactor is designed for robust and reliable switching of three-phase AC motors and other loads up to 300A at AC-3e/AC-3. With an impressive rated power of 160 kW at 400V, it provides the superior performance required for heavy-duty motor control.

A key feature is its innovative electronic drive and a wide-range 72V DC coil, which operates reliably from 0.7 to 1.25 times the rated control voltage (Uc​). This intelligent design ensures stable operation even with voltage fluctuations. The contactor also features a versatile PLC input for control signals ranging from 24V to 110V DC, making it highly compatible with modern automation systems.

Benefit

• Exceptional Durability: Built to withstand harsh operating environments, including those found in railroad applications, thanks to its extended rated condition and IEC 60077 certification.
• High Performance: Capable of handling significant loads up to 300A and 160kW, suitable for large motors and industrial machinery.
• Reliable Operation: The electronic drive and wide-range 72V DC control voltage (Uc​) ensure stable and reliable switching, even under fluctuating power conditions.
• Versatile Connectivity: Equipped with a busbar connection for the main circuit for efficient power distribution, and screw terminals for the control and auxiliary circuits for secure wiring.
• Advanced Integration: Features a PLC input for direct control from automation systems, simplifying integration into existing control architectures.
• Integrated Auxiliary Contacts: Includes two normally open (NO) and two normally closed (NC) auxiliary contacts, providing immediate feedback for status monitoring and interlocking applications.

Function

The Siemens 3RT1066-6XJ46-0LA2 functions as a remotely operated switch for controlling power to electrical loads, primarily three-phase AC motors. When a control voltage is applied to the electronic drive, an electromagnet is energized, causing the main power contacts to close and allow current to flow to the motor. The auxiliary contacts change state simultaneously, providing feedback to the control system. The electronic drive ensures precise and quiet switching, while the robust mechanical design guarantees a long service life.

Technical Specification

• Product Type: Power Contactor
• Part Number: 3RT1066-6XJ46-0LA2
• Rated Current (AC-3e/AC-3): 300 A
• Rated Power: 160 kW at 400 V
• Number of Poles: 3
• Control Supply Voltage (Uc​): 72 V DC (Operating Range: 0.7×Uc​ to 1.25×Uc​)
• PLC Input: 24 - 110 V DC
• Auxiliary Contacts: 2 NO + 2 NC
• Drive: Electronic
• Main Circuit Connection: Busbar
• Control/Auxiliary Circuit Connection: Screw Terminal
• Rated Condition: Extended, Railroad IEC 60077
• Manufacturer: Siemens

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