Siemens 3RT2045-1NE30 Power Contactor 80A, AC-3, 37 kW, 3-Pole, 48–80V AC/DC, S3 Size Original Brand New

Overview

The Siemens 3RT2045-1NE30 is a high-performance industrial power contactor designed for demanding motor control and power switching applications. Engineered for reliability and efficiency, this contactor supports AC-3 and AC-3e applications, handling up to 80 A and 37 kW at 400 V.

With a 48–80 V AC/DC coil, integrated varistor surge protection, and 1 NO + 1 NC auxiliary contacts, it ensures robust electrical performance and enhanced operational safety.
Its S3 size and screw terminal design allow easy installation and long-term durability in industrial automation environments.

Function

• Power Switching: Ideal for motor starters and power circuits up to 37 kW / 400 V

• AC-3 / AC-3e Rated: Suitable for starting and stopping squirrel-cage motors

• Wide Coil Voltage Range: 48–80 V AC/DC, compatible with flexible control systems

• Integrated Varistor: Provides surge suppression and protects coil circuits

• Auxiliary Contacts: Includes 1 NO + 1 NC for signaling and interlocking

Technical Features

• Current Rating: 80 A

• Poles: 3-pole design

• Frequency: 50/60 Hz

• Terminal Type: Screw terminal

• Size: S3

• High mechanical endurance for long service life

• Robust construction for industrial applications

Benefit

• Enhanced equipment protection via built-in varistor surge suppression

• Reliable operation in harsh industrial environments

• Flexible installation due to wide coil voltage compatibility

• Reduced downtime with durable electromechanical design

• Optimized for industrial automation, motor control centers, and control panels

• Cost-effective choice for heavy-duty switching applications

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