Siemens SIRIUS 3RT1056-6SF36 Power Contactor 185A, 90kW, 96-127V AC/DC Electronic Drive Original Brand New

Overview

The Siemens SIRIUS 3RT1056-6SF36 Power Contactor is a high-performance 3-pole switching device designed for reliable motor control and load switching in industrial automation and power distribution applications. As part of the globally recognized SIRIUS modular system, this contactor offers exceptional performance with a rated operational current of 185 A (AC-3e/AC-3) and a power rating of 90 kW at $400\text{ V}$. It features a versatile electronic drive for precise control, accommodating a wide control supply voltage range of 96-127 V AC (50-60 Hz) / DC.

Key Technical Specifications

• Product ID: 3RT1056-6SF36
• Product Series: SIRIUS 3RT10
• Contactor Type: Power Contactor (3-pole)
• Rated Current (AC-3e/AC-3, 400 V): $185\text{ A}$
• Rated Power (AC-3, 400 V): $90\text{ kW}$
• Control Voltage (Uc): $96-127\text{ V AC/DC}$ ($\times (0.8-1.1)$)
• Auxiliary Contacts: 2 NO (Normally Open) + 2 NC (Normally Closed)
• Drive Type: Electronic
• Special Feature: F-PLC input $24\text{ V DC}$ (for safe control)
• Main Circuit Connection: Busbar connection
• Control/Auxiliary Circuit Connection: Screw terminal

Function

The 3RT1056-6SF36 serves to switch and control large motor loads, resistive loads, and other three-phase power consumers. The robust electronic drive unit ensures low-power consumption and reliable switching, making it suitable for modern, energy-efficient control systems, especially those integrating a $24\text{ V DC F-PLC}$ (Functional Safety PLC) for safety-related shutdown. The integrated $2\text{ NO}+2\text{ NC}$ auxiliary contacts provide status feedback and interlock functionality within the control circuit.

Benefits and Features

• High Performance: Handles up to $185\text{ A}$ and $90\text{ kW}$, making it ideal for heavy industrial applications.
• Flexible Control: Universal $96-127\text{ V AC/DC}$ control voltage range with electronic drive simplifies inventory and installation.
• Safety Integration: Dedicated $24\text{ V DC F-PLC}$ input allows direct, safe control from safety PLCs, enhancing machine and personnel safety.
• Durable Design: SIRIUS quality ensures long mechanical and electrical life.
• Easy Installation: Busbar connection for the main circuit and reliable screw terminals for control wiring ensure quick and secure setup.
• Comprehensive Feedback: $2\text{ NO}+2\text{ NC}$ auxiliary contacts for seamless monitoring and control circuit integration.

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