Siemens 3RT2025-2XJ40-0LA2 Contactor, 17A, 72V DC, Spring-Loaded Original Brand New

Overview

The Siemens SIRIUS 3RT2025-2XJ40-0LA2 is a high-performance traction contactor designed for demanding applications in railway, transportation, and industrial environments where reliable switching under DC voltage is critical. This 3-pole contactor is rated for AC-3e/AC-3 operation at 17 A (or 7.5 kW at 400 V), making it suitable for controlling motors and other resistive loads.

A key feature is its 72 V DC solid-state operating mechanism, which provides a wide operating range of $0.7$ to $1.25$ times the control supply voltage (Uc​). The integration of a varistor ensures robust protection against voltage spikes, enhancing longevity and reliability. The compact Frame Size S0 design, coupled with spring-loaded terminals, makes installation and wiring fast, secure, and vibration-proof.

Key Benefit

• Exceptional Reliability: Solid-state operating mechanism and integrated varistor provide reliable switching and surge protection, minimizing downtime.
• Space-Saving Design: Compact Frame Size S0 allows for high-density panel mounting.
• Fast, Secure Wiring: Spring-loaded terminals offer a quick, maintenance-free connection that is highly resistant to vibration.
• Broad Application: Optimized for traction and DC-powered systems with a nominal control voltage of 72V DC.
• Versatile Control: Includes 1 NO (Normally Open) + 1 NC (Normally Closed) auxiliary contacts for monitoring and interlocking circuits.

Function and Technical Specifications

The 3RT2025-2XJ40-0LA2 functions as a primary switching device for connecting and disconnecting electrical loads. It meets the latest standards for both $\text{AC-3}$ (switching squirrel-cage motors) and the enhanced $\text{AC-3e}$ efficiency class.

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