Siemens 3RT2047-1AK60-1AA0 Power Contactor, 110A, 55kW, S3 Original Brand New

Overview

The Siemens 3RT2047-1AK60-1AA0 is a robust, 3-pole SIRIUS 3RT2 power contactor engineered for reliable switching of electric motors and other heavy-duty loads. Part of the SIRIUS modular system, this size S3 contactor offers high performance in a compact, climate-resistant design. It is rated for an operational current of 110 A (at AC-3, 400V) and a maximum motor power of 55 kW (at 400V). The integrated control coil operates on a flexible voltage of 110 V AC (50 Hz) / 120 V AC (60 Hz).

This unit comes standard with screw terminals for secure, conventional wiring and includes 1 Normally Open (NO) + 1 Normally Closed (NC) integrated auxiliary contacts, simplifying your control circuit design. Its upright mounting position allows for flexible installation in industrial control panels.

Benefit

• High Performance in a Compact Design: The SIRIUS 3RT2 series maintains high current switching capacity while minimizing panel space compared to older models (replaces the proven 3RT1 series up to 55 kW).
• Globally Approved & IE3/IE4 Ready: Meets international standards (e.g., IEC, UL/CSA) and is optimized for use with high-efficiency IE3/IE4 motors.
• Simplified Design: Integrated 1NO+1NC auxiliary contacts reduce complexity and wiring effort. The front connections further ease installation.
• Modular Flexibility: Compatible with the comprehensive SIRIUS modular system, allowing easy expansion with auxiliary switch blocks, overload relays (e.g., 3RU2, 3RB3), and functional modules.
• Reliable Operation: Designed for high contact reliability and a long mechanical service life (typically 10 million operating cycles).

Function and Application

The 3RT2047-1AK60-1AA0 Power Contactor is primarily used in industrial and commercial applications for:

• Motor Switching: Safely and reliably switching 3-phase AC electric motors (up to 55kW).
• Industrial Control Systems: Serving as the main switching element in control circuits for pumps, compressors, HVAC systems, conveyors, and machine tools.
• Resistive Load Switching (AC-1): Capable of switching resistive loads up to 130 A (at 400V).
• Complete Load Feeders: It is the core component when combined with a circuit breaker (e.g., 3RV2) and an overload relay (e.g., 3RU2/3RB3) to create a complete, tested load feeder solution.

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