Siemens 3RT2045-3CP04-3MA0 Power Contactor, 80A, 37kW, 3-Pole, 230V AC, AC-3/AC-3e Original Brand New

Overview

The Siemens 3RT2045-3CP04-3MA0 is a premium-quality power contactor designed for reliable switching of electric motors and power circuits. Built for durability and efficiency, this 3-pole contactor supports AC-3e/AC-3 applications up to 80A and 37kW at 400V, making it ideal for industrial automation and motor control systems. Its integrated plugged-in varistor ensures surge protection, while the spring-loaded terminals simplify installation and maintenance.

Key Benefit

• High Switching Capacity: Handles up to 80A / 37kW at 400V, perfect for demanding motor applications.

• Reliable Surge Protection: Comes with an integrated plugged-in varistor for voltage spike suppression.

• Enhanced Safety: Equipped with 2 NO + 2 NC auxiliary contacts for better control and monitoring.

• Durable Design: Siemens’ S3 size contactor ensures long operational life and mechanical stability.

• Easy Wiring: Screw terminals for main circuits and spring-loaded terminals for control and auxiliary circuits make setup fast and secure.

• Versatile Control Voltage: Operates on 230V AC, 50 Hz, suitable for a wide range of electrical systems.

Application

The 3RT2045-3CP04-3MA0 is ideal for heavy-duty switching applications, including:

• Starting and controlling high-power electric motors (pumps, fans, compressors).
• Switching resistive loads (heating, lighting).
• Integration into automated industrial machinery and control panels.
• Use in reversing starter and star-delta (wye-delta) configurations.

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