Siemens SIRIUS 3RT2038-3AH00 Power Contactor, Size S2, 80A, 48V AC Coil, Spring-Loaded Control Terminals Original Brand New

Overview

The Siemens SIRIUS 3RT2038-3AH00 is a high-performance, 3-pole power contactor from the globally successful SIRIUS modular system. Engineered for switching motors and other loads up to 80 Amps (AC-3e/AC-3), this device ensures reliable and long-lasting operation in industrial control applications. The Size S2 frame offers a compact, yet powerful solution, capable of handling a motor power rating of 37 kW at 400 V.

A key feature of the 3RT2038-3AH00 is its dual terminal technology: screw terminals for the robust main circuit connections and innovative spring-loaded terminals (spring-type) for the control and auxiliary circuits. This combination offers both secure power connections and quick, vibration-proof wiring for the control system, significantly reducing installation time and maintenance needs.

Benefit

1. High Reliability for Motor Control: Rated for AC-3e/AC-3 at 80 A and 37 kW, providing dependable control for powerful three-phase motors.
2. Fast & Secure Wiring: Utilizes time-saving spring-loaded terminals for the control circuit, ensuring a secure, maintenance-free, and vibration-proof connection.
3. Space-Saving Design (Size S2): Offers a high power-to-size ratio, optimizing panel space in industrial enclosures.
4. Integrated Auxiliary Contacts: Includes pre-installed 1 NO + 1 NC contacts, simplifying circuit design and eliminating the need for separate auxiliary switch blocks in many applications.
5. Global Standard & Compliance: Part of the SIRIUS modular system, ensuring seamless integration, worldwide approval (IEC, UL/CSA, etc.), and future-proof design (IE3/IE4 ready).

Function and Application

• Motor Switching: Primary function for the safe and reliable switching of three-phase squirrel-cage motors (AC-3/AC-3e operation).
• Load Switching: Suitable for switching non-motor loads such as heating, lighting, or transformer circuits (AC-1 operation).
• Control Integration: The 48 V AC coil and integrated auxiliary contacts (1NO+1NC) allow for direct control from low-voltage systems and easy feedback into the control circuit (e.g., PLC).
• Ideal for Harsh Environments: Spring-type terminals resist vibration and loosening, making the 3RT2038-3AH00 perfect for machinery and mobile equipment where terminal integrity is critical.

Installation and Compatibility

The Siemens 3RT2038-3AH00 is designed for DIN rail mounting and is compatible with the extensive range of SIRIUS accessories, including:

• Auxiliary switch blocks
• Surge suppressors
• Overload relays (e.g., SIRIUS 3RU2) for building complete, tested load feeders.

For more information on the SIRIUS line and our full range of industrial control products, visit turll today!