Siemens 3RT1066-6NF36 SIRIUS Power Contactor, 300A, 160kW, 96-127V UC Original Brand New

Overview: Siemens 3RT1066-6NF36 SIRIUS Power Contactor

The Siemens 3RT1066-6NF36 is a robust and high-performance SIRIUS 3RT10 power contactor designed for switching motors and non-inductive loads up to 300 Amperes in industrial applications. Classified under the highly efficient AC-3e/AC-3 utilization category, this 3-pole contactor handles motor power up to 160 kW at 400 V.

Part of the modular SIRIUS system, the 3RT1066-6NF36 (Size S10) features an advanced electronic drive for precise control, operable with a wide 96-127 V AC/DC (Uc) control supply voltage. It is equipped with a dedicated 24V DC PLC input, ensuring seamless integration with modern automation systems.

Benefit & Advantages

• High Performance: Capable of switching heavy loads with a $300\text{ A}$ current rating and $160\text{ kW}$ power, ideal for large motor applications.
• IE3/IE4 Motor Ready (AC-3e): Optimized for use with modern, highly efficient IE3 and IE4 motors, ensuring future-proof compliance and energy savings.
• Flexible Control: The electronic wide-range coil (96-127V AC/DC) simplifies component selection and is globally applicable.
• Direct PLC Integration: The dedicated $24\text{ V DC}$ PLC input provides a simple and reliable interface to digital control systems.
• Space-Saving Design: Its compact SIRIUS modular design allows for high packing density in control cabinets.
• Easy Installation: Features robust Busbar connections for the main circuit and reliable Screw Terminals for the control and auxiliary circuits.
• High Contact Reliability: Part of the established Siemens SIRIUS family, guaranteeing long mechanical and electrical life.

Function

The Siemens 3RT1066-6NF36 serves as a key component in motor control and switching systems. Its primary function is the safe and reliable switching of a 3-phase motor load in both AC-3 (standard motor starting) and the new AC-3e (high-efficiency motor starting) applications. The integrated auxiliary contacts (2 NO + 2 NC) provide essential feedback and control signals to the higher-level automation system (PLC, HMI, etc.).

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