Siemens 3RT1075-6SF36 SIRIUS Power Contactor, 400A, 200kW, F-PLC Input Original Brand New

Overview

The Siemens 3RT1075-6SF36 is a high-performance SIRIUS power contactor designed for reliable and heavy-duty motor switching applications in industrial environments. Part of the robust SIRIUS 3RT1 series, this 3-pole contactor is engineered for use in the AC-3e/AC-3 utilization category, rated for a maximum operational current of 400 A and a motor power of 200 kW at 400 V.

A key feature is its electronic wide-range AC/DC coil (96-127 V) with an integrated F-PLC input (24 V DC), making it ideal for modern, safety-oriented control systems and flexible power applications. The main circuit employs a secure busbar connection, while the control and auxiliary circuits use reliable screw terminals. This model includes generous integrated auxiliary contacts (2 NO + 2 NC).

Key Benefits and Advantages

• High Performance: Capable of switching large motors up to $200\text{kW}$ at $400\text{V}$, suitable for demanding industrial machinery and infrastructure.
• Safety Integration (F-PLC Ready): The dedicated F-PLC input at $24\text{V DC}$ simplifies integration into fail-safe circuits and safety-related control systems, enhancing operational security.
• Flexible Operation: The electronic wide-range coil design accommodates both AC and DC control voltages ($96-127\text{V}$), reducing parts inventory and simplifying installation.
• Robust Connectivity: Busbar connections for the main circuit ensure reliable, high-current power distribution, while screw terminals for control offer proven security for wiring.
• Space-Saving Design: Despite its high current rating, the SIRIUS series maintains a compact footprint for efficient panel space utilization.
• Global Standards Compliance: Designed and certified for worldwide use, including compliance with both IEC and the new AC-3e utilization category standards.

Functions and Typical Applications

Functions:

• Motor Switching: Primary function for switching three-phase asynchronous motors (DOL starting).
• Load Control: Switching of resistive, inductive, and capacitive loads (AC-1, etc.).
• Electrical Isolation: Providing a means of power isolation for maintenance and safety.

Typical Applications:

• Heavy-duty pump and fan control
• Conveyor systems and material handling
• Large machine tools and manufacturing equipment
• Wind turbine applications
• Power distribution and control panels requiring high current ratings.

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