Siemens SIRIUS 3RT2025-1AU20 Power Contactor 17A, 7.5kW, 380V AC, S0 Size Original Brand New

Overview

The Siemens SIRIUS 3RT2025-1AU20 is a high-performance power contactor designed for reliable and efficient switching of electric motors and other loads up to 7.5 kW. Part of the renowned SIRIUS modular system, this contactor is engineered for industrial applications, offering exceptional durability and easy integration.

It features a compact S0 size, making it suitable for installations where space is a premium. The 3RT2025-1AU20 is rated for AC-3e/AC-3 duty, ensuring it meets the latest international standards for energy efficiency and operational safety.

Key Benefit

• High Performance: Capable of handling up to 17A and 7.5 kW at 400V, making it ideal for a wide range of motor control applications.
• Space-Saving Design: The compact Size S0 allows for higher density installations in control cabinets.
• Reliable Operation: Built with Siemens’ renowned quality, providing long-term reliability and a long mechanical and electrical service life.
• Versatile Auxiliary Contacts: Includes one normally open (1 NO) and one normally closed (1 NC) auxiliary contact, offering flexible integration into control circuits for signaling and interlocking.
• Easy Installation: Features robust screw terminals for secure and straightforward wiring.
• Global Standards Compliance: Adheres to IEC 60947 and other international standards, ensuring safe and compliant operation worldwide.

Technical Specification

• Product Number: 3RT2025-1AU20
• Rated Current (AC-3e/AC-3): 17 A
• Rated Power: 7.5 kW at 400 V
• Number of Poles: 3
• Operating Voltage: 380 V AC, 50/60 Hz
• Auxiliary Contacts: 1 NO + 1 NC
• Termination Type: Screw Terminal
• Size: S0
• Series: SIRIUS 3RT2
• Product Type: Power Contactor

Functionality

The Siemens 3RT2025-1AU20 functions as an electrically operated switch for a power circuit. When the 380 V AC control voltage is applied to the coil, the main contacts close, allowing power to flow to the connected load. The integrated 1 NO and 1 NC auxiliary contacts change state simultaneously, providing feedback to the control system or enabling interlocking functions with other components.

Its primary function is to safely and remotely switch motor loads, resistive loads, and other electrical equipment, protecting them from overloads and short circuits when used in conjunction with a suitable circuit breaker or fuse.

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