Siemens 3RT2036-3XJ44-0LA2 Traction Contactor 51A, 72V DC, S2 Original Brand New

Overview

The Siemens 3RT2036-3XJ44-0LA2 is a high-performance traction contactor from the SIRIUS 3RT2 range, engineered for reliable switching of motors in demanding industrial and rail applications. This robust 3-pole device is rated for Ie​ of 51 A under AC-3e/AC-3 conditions, handling a formidable 22 kW at 400 V. Designed for versatility and minimal maintenance, it features a 72 V DC solid-state operating mechanism with an integrated varistor for surge suppression, ensuring maximum operational lifespan and coil protection.

The size S2 frame offers a compact yet powerful solution, and the integrated auxiliary contacts (2 NO + 2 NC) provide essential feedback and interlocking capability. The main circuit utilizes durable screw terminals, while the control and auxiliary circuits feature convenient, time-saving spring-loaded terminals. Furthermore, this model includes a removable auxiliary switch for flexible configuration.

Key Benefit

• Enhanced Reliability: Solid-state operating mechanism and integrated varistor deliver superior switching accuracy and extended coil life, reducing downtime.
• High Performance: Capable of handling $51\text{ A}$ (AC-3) and $22\text{ kW}$ power ratings, suitable for heavy-duty motor control.
• Flexible Connections: Combination of robust screw terminals for the main circuit and quick-wiring spring-loaded terminals for control allows for easy installation and maintenance.
• Versatile Control: Operates efficiently on a wide control voltage range (0.7−1.25∗Uc​) with a nominal 72 V DC coil voltage, ideal for various DC control systems.
• Space & Cost Efficient: Size S2 footprint is optimized for control panel space, and the integrated $2\text{ NO}+2\text{ NC}$ auxiliary contacts and varistor reduce the need for external components.

Application

The Siemens 3RT2036-3XJ44-0LA2 is primarily designed for switching motors and non-inductive loads in railway and industrial applications where a reliable DC-operated contactor is essential. Its combination of a solid-state mechanism and integrated varistor makes it a perfect fit for environments requiring high switching consistency and immunity to voltage spikes.

To explore pricing, availability, and our full range of Siemens SIRIUS contactors and industrial control products, visit Turll today!