Siemens SIRIUS 3RT7045-1AG20 Contactor, 3-Pole, AC-3 80A/37kW, 110V AC Coil, Size S3, Screw Terminal Original Brand New

Overview

The Siemens SIRIUS 3RT7045-1AG20 is a high-performance 3-pole contactor from the trusted SIRIUS series, designed for controlling AC motors up to 80A (37kW) at 400V. This robust and reliable device is built to handle frequent switching operations in a variety of industrial applications. Featuring a 110V AC control voltage coil (50/60 Hz), it offers versatile integration into standard control circuits. The compact Size S3 design and secure screw terminals ensure easy and reliable installation, making it an ideal choice for motor control, switching resistive loads, and general power distribution within control cabinets.

Key Benefit

• High Performance: Capable of controlling motors up to 37kW (at 400V), providing reliable and efficient power switching.
• Durable and Long-Lasting: Engineered for a high number of switching cycles, ensuring a long service life and reduced maintenance costs.
• Space-Saving Design: The compact Size S3 form factor allows for efficient use of space within control panels and electrical enclosures.
• Easy Installation: Features robust screw terminals for secure wiring connections and quick mounting.
• Global Standard Compliance: Adheres to international standards, ensuring safe and reliable operation in diverse industrial environments.
• Seamless Integration: Part of the comprehensive Siemens SIRIUS modular system, allowing for easy expansion with auxiliary contacts and other accessories.

Function

• Motor Control: Acts as a main switching element to start and stop AC motors in industrial machinery, pumps, fans, and conveyor systems.
• Resistive Load Switching: Suitable for switching resistive loads like heating elements and lighting circuits.
• Remote Switching: Enables the remote control of power circuits when paired with an appropriate control system.
• Safety and Protection: Provides a means of disconnecting power to equipment in emergency stop situations.

Technical Specification

• Product Type: Contactor
• Manufacturer: Siemens
• Model: 3RT7045-1AG20
• Series: SIRIUS 3RT7
• Poles: 3-Pole
• Operating Current (AC-3): 80A
• Motor Power (AC-3):
  • 37kW at 400V
  • 45kW at 500V
  • 55kW at 690V
• Control Coil Voltage: 110V AC, 50/60 Hz
• Frame Size: S3
• Terminals: Screw Terminals
• Main Circuit Connections: Screw type
• Auxiliary Contacts: Not integrated (can be added separately)
• Mounting: DIN rail or screw mounting
• Standards: IEC 60947-4-1, EN 60947-4-1

Application

• Industrial automation and control systems
• Pump control
• HVAC systems
• Material handling and conveying equipment
• Machine tools
• General power switching applications

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