Siemens 3RT2038-3NF30 SIRIUS 3RT2 Power Contactor, 80A, 37kW, 400V, AC-3e/AC-3, 83-155V AC/DC Coil, Spring-Loaded Terminals Original Brand New

Overview

The Siemens SIRIUS 3RT2038-3NF30 is a highly reliable, high-performance 3-pole power contactor designed for switching motors and industrial loads up to 80 A and 37 kW at 400 V (AC-3e/AC-3 utilization category). As a key component of the SIRIUS modular system, this contactor provides exceptional switching capacity within a compact Size S2 footprint. It is engineered for efficient operation in a wide range of industrial control applications, offering both robust power connections and quick, vibration-proof control wiring.

Benefit

• High Performance in a Compact Design: Maximum efficiency and power density with 80 A and 37 kW switching capacity in a small Size S2.
• Versatile Control: Wide-range 83-155 V AC/DC operating coil simplifies inventory and ensures reliable operation across varying control voltages.
• Enhanced Reliability: Integrated varistor provides effective surge suppression, protecting the coil and extending the contactor’s service life.
• Fast & Secure Wiring: Main power circuit uses robust screw terminals, while the control and auxiliary circuits feature quick, vibration-proof spring-loaded terminals for faster installation and maintenance-free operation.
• Standardized Integration: Seamlessly fits into the SIRIUS modular system, simplifying the creation of load feeders and motor starters.

Function and Applications

The 3RT2038-3NF30 power contactor is primarily used for the switching of electric motors and other resistive or inductive loads.

• Function: It is an electromechanical switching device that controls the flow of electrical power to a load based on a control signal from a PLC, push button, or other automation device. The combination of $1\text{ NO}+1\text{ NC}$ auxiliary contacts allows for easy integration into interlocking and signaling circuits.
• Typical Applications:
  • Switching 3-phase AC motors (direct-on-line starting).
  • Integration into complex motor starter combinations (e.g., reversing starters).
  • Switching resistive and highly inductive loads in industrial automation, HVAC, pumping systems, and conveying technology.

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