Siemens SIRIUS 3RT20 Power Contactor S3, 95A, 45kW, 24V AC Original Brand New

Overview: Siemens SIRIUS 3RT2046-1AB00 Power Contactor, Size S3

The Siemens 3RT2046-1AB00 is a high-performance 3-pole power contactor from the SIRIUS 3RT20 series, engineered for switching motors and other resistive loads in industrial automation applications. This robust device is classified under utilization category AC-3e/AC-3, confirming its suitability for standard and highly efficient motor switching. Featuring a compact, modern design, the Size S3 contactor offers high contact reliability and is designed for seamless integration into load feeders using the modular SIRIUS system. It is IE3/IE4-ready, supporting energy-efficient motor systems.

Benefit

• High Performance in a Compact Design: Size S3 power density saves space in control cabinets while handling substantial load current (95A).
• Energy Efficiency Ready: Compliant and optimized for use with highly efficient IE3/IE4 motors.
• High Reliability: Exceptional mechanical service life (typically 10 million operating cycles) ensures long-term, maintenance-free operation.
• Simplified Wiring: Features user-friendly screw terminals for secure and straightforward connection of main and auxiliary circuits.
• Modular System Compatibility: Integrates seamlessly with other components in the Siemens SIRIUS modular system, including overload relays, auxiliary switches, and function modules, simplifying design and assembly.

Function

The 3RT2046-1AB00 contactor functions as an electrically operated switch for the main circuit of a motor. When the 24V AC coil is energized, the three main contacts close, connecting the 400V power supply to the load (typically a 45 kW motor). The integrated 1 NO (Normally Open) and 1 NC (Normally Closed) auxiliary contacts provide essential feedback or control signals to the control system for interlocking, signaling, and other auxiliary functions.

Application

This contactor is ideal for a wide range of industrial applications, including:

• Switching 3-phase AC motors (up to 45 kW at 400V)
• Controlling large heating elements or lighting circuits
• Use in motor control centers (MCCs)
• Integration into complex machinery and processing plants

To complete your motor control setup and explore compatible accessories, visit Turll for more of our wide range of high-quality industrial automation products.