Siemens 3RT2045-3KB44-3MA0 Power Contactor 80A, 37kW, 3-Pole, Integrated Varistor Original Brand New

Overview

The Siemens 3RT2045-3KB44-3MA0 is a premium power contactor designed for industrial automation and control systems. With an AC-3e/AC-3 rating of 80 A and capable of handling up to 37 kW at 400 V, this 3-pole contactor ensures reliable and efficient switching for motors and heavy machinery. Equipped with an integrated varistor and captive auxiliary contacts (1 NO + 1 NC), it offers enhanced protection and versatility. Its frame size S3 and PLC-compatible output make it perfect for modern automated setups.

Key Features & Function

• Rated for AC-3e/AC-3 switching: 80 A, 37 kW / 400 V

• 3-pole configuration with 24 V DC control voltage

• Integrated varistor for surge protection and extended component life

• Auxiliary contacts: 1 NO + 1 NC for monitoring and control

• Main circuit: screw terminal; control & auxiliary circuit: spring-loaded terminal

• Frame size: S3

• Suitable for PLC outputs and industrial automation applications

• Captive auxiliary switch for easy installation

Benefit

• Reliable Motor Control: Safely handles heavy industrial motors up to 37 kW.

• Enhanced Protection: Integrated varistor absorbs voltage spikes, preventing damage.

• Ease of Integration: Compatible with PLC systems, simplifying automation projects.

• Durable Construction: High-quality terminals ensure secure connections and long operational life.

• Versatile Monitoring: Auxiliary contacts allow real-time status monitoring and remote control.

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