Siemens SIRIUS 3RT2045-1AM20 Power Contactor, 3-Pole, 80A, 37kW, AC-3, 208V AC Coil, Size S3 Original Brand New

Overview

The Siemens SIRIUS 3RT2045-1AM20 is a high-performance 3-pole power contactor from the globally recognized SIRIUS 3RT2 series. Engineered for robust motor switching applications, this reliable component is rated for 80 A (AC-3e/AC-3) and handles a power output of up to 37 kW at 400 V. Featuring a versatile 208 V AC coil (50/60 Hz) and an integrated 1 NO + 1 NC auxiliary contact configuration, it offers exceptional contact reliability and is designed for seamless integration into various control systems. Its compact Size S3 form factor and user-friendly screw terminals ensure easy installation and maintenance.

Benefit

• High Performance: Capable of controlling motors up to 37 kW, providing reliable performance for heavy-duty industrial applications.
• Global Compatibility: Part of the SIRIUS modular system, ensuring optimal matching with other Siemens components and worldwide approvals (IEC, UL/CSA).
• Space-Saving Design: The compact Size S3 allows for efficient panel design and installation.
• Enhanced Control: Integrated 1 NO + 1 NC auxiliary contacts provide immediate feedback and simplified wiring for automation and control circuits.
• Easy & Secure Wiring: Robust screw terminals ensure a secure, vibration-resistant connection for both main and control wiring.
• Long Mechanical Life: Designed for a long service life, minimizing maintenance and downtime (typically 10 million operating cycles).
• Climate-Resistant: Operational in a wide ambient temperature range (-25 to +60 °C).

Function / Application

The Siemens 3RT2045-1AM20 power contactor is primarily used for switching 3-phase AC motors and controlling electrical loads in industrial environments. Typical applications include:

1. Motor Switching (DOL Starters): Controlling the start and stop of electric motors (AC-3/AC-3e duty).
2. General Load Switching: Switching resistive, non-inductive, or weakly inductive loads (AC-1 duty, 125 A at 400 V).
3. Integration into Control Systems: Ideal for use in motor starter combinations, control panels, and automated machinery due to its integrated auxiliary contacts and compatibility with SIRIUS modular components.

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