Siemens SIRIUS 3RT1066-6AU36 Power Contactor, 3-Pole, 300A, 160 kW, 240-277V AC/DC Coil, Busbar/Screw Terminal Original Brand New

Overview

The Siemens SIRIUS 3RT1066-6AU36 is a high-performance, 3-pole power contactor designed for reliable switching of electric motors and other heavy industrial loads. As part of the globally recognized SIRIUS 3RT1 series, this robust contactor offers exceptional operational reliability, long mechanical and electrical lifespan, and compact dimensions for efficient use of cabinet space. It is specifically engineered for use in demanding applications, adhering to both AC-3 and the latest AC-3e efficiency categories.

Function & Application

The 3RT1066-6AU36 functions as a main switching device in motor control and industrial automation systems. It is primarily used for switching 3-phase AC motors (up to $160\text{ kW}$) and resistive loads. Its wide-range $240\text{ – }277\text{ V AC/DC}$ conventional coil simplifies inventory and allows for flexible use across various control voltages, ensuring reliable operation even with voltage fluctuations. The combination of main busbar connections and control circuit screw terminals facilitates robust power connections and secure auxiliary wiring.

Benefit

• High Performance & Reliability: Rated for $300\text{ A}$ (AC-3/AC-3e) and $160\text{ kW}$ power, ideal for heavy-duty industrial motor applications.
• Flexible Control: Universal $240\text{ – }277\text{ V AC/DC}$ (UC) conventional coil drive allows for use in both AC and DC control systems with a single device.
• Integrated Auxiliary Contacts: Comes standard with $2\text{ NO }+2\text{ NC}$ auxiliary contacts, reducing the need for external components and simplifying wiring.
• Space Efficiency: Part of the compact SIRIUS modular system (Size S10) for high packing density in control cabinets.
• Global Standard Compliance: Meets major international standards (IEC, UL/CSA), making it suitable for global use and export.
• Robust Connectivity: Features secure busbar connections for the main power circuit and reliable screw terminals for control and auxiliary circuits.

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