Overview
The Siemens 3RT2045-1AG24 is a high-performance SIRIUS Power Contactor designed for reliable switching of motors and demanding industrial loads. This robust 3-pole contactor is rated for 80 A (AC-3e/AC-3) and a maximum motor power of 37 kW at 400 V. Part of the SIRIUS modular system, the 3RT2045-1AG24 offers a compact design (Size S3) and high contact reliability, making it an ideal choice for modern machine building and plant engineering.
Benefit
- High Reliability: Engineered by Siemens, this SIRIUS 3RT2 contactor ensures long-term operational reliability for critical motor control and industrial applications.
- Simplified Design: The integrated 2 NO + 2 NC auxiliary contacts and removable auxiliary switch minimize component count and simplify system wiring.
- Flexible Integration: The modular SIRIUS system allows for seamless combination with motor circuit breakers and other components to build complete, tested load feeders.
- Global Use: Approved to international standards (IEC and UL/CSA), making it suitable for machinery and plants destined for worldwide export.
- Easy Maintenance: Features a secure screw terminal connection method for robust and simple installation and maintenance.
Function & Application
The 3RT2045-1AG24 Power Contactor is primarily used for switching 3-phase AC motors and resistive loads up to 80 A. Typical applications include:
- Controlling large pump systems and fans.
- Starting and stopping heavy-duty conveyors and machinery.
- Integration into complex industrial automation and control panels.
- General use in HVAC and machinery requiring a high-power switching element.
For more information on the Siemens 3RT2045-1AG24 or to explore our full range of industrial control components, visit turll today!













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