Overview
The Siemens 3RT1056-6XJ46-0LA2 is a high-performance 3-pole power contactor designed for demanding industrial and railroad applications. With a robust AC-3e/AC-3 rating of 185 A and a power rating of 90 kW at 400 V, this contactor is built to handle heavy-duty loads with exceptional reliability.
Its key features include a 72 V DC electronic drive with a wide operating range, an integrated PLC input for enhanced control, and a durable design compliant with the extended rated conditions of railroad standard IEC 60077. This makes it an ideal solution for railway systems, traction applications, and other environments requiring stringent component performance.
Key Benefit
- High Performance & Durability: Rated for 185 A and 90 kW, capable of managing significant electrical loads.
- Versatile Control: Features a 72 V DC electronic drive that tolerates voltage fluctuations (0.7 to 1.25×Uc), ensuring stable operation.
- PLC Integration: The integrated PLC input (24−110 V DC) simplifies control system design and communication, enabling seamless automation.
- Railroad Certified: Complies with IEC 60077 for extended rated conditions, guaranteeing suitability for the rigorous demands of railway systems.
- Flexible Connections: Equipped with busbar connections for the main circuit and screw terminals for the control and auxiliary circuits, offering installation flexibility.
- Comprehensive Auxiliary Contacts: Includes 2 NO (Normally Open) and 2 NC (Normally Closed) auxiliary contacts for feedback and interlocking functions.
Function & Application
- Motor Control: Ideal for switching and controlling motors in various industrial machinery and processes.
- Load Switching: Used for switching high-power resistive loads, transformers, and other electrical equipment.
- Railway Systems: Specifically designed for traction applications, auxiliary power systems, and other electrical circuits on trains and rolling stock.
- Heavy Industry: Suitable for applications in mining, manufacturing, and process industries where reliable power switching is critical.
Technical Specification
- Product Type: Power Contactor
- Product Number: 3RT1056-6XJ46-0LA2
- Rated Operational Current (AC-3e/AC-3): 185 A
- Rated Power (AC-3): 90 kW at 400 V
- Control Voltage (Uc): 72 V DC (Operating range: 0.7-1.25 x Uc)
- PLC Input Voltage: 24-110 V DC
- Number of Poles: 3-pole
- Auxiliary Contacts: 2 NO + 2 NC
- Drive Type: Electronic
- Main Circuit Connection: Busbar
- Control & Auxiliary Circuit Connection: Screw Terminal
- Standards: IEC 60077 (extended rated condition for railroad)
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