Siemens 3RT2036-3XF40-0LA2 Traction Contactor, 51A, 22kW, 110V DC, S2, SIRIUS Original Brand New

Overview

The Siemens 3RT2036-3XF40-0LA2 is a high-performance SIRIUS 3RT2 traction contactor (Size S2) engineered for reliable switching of motors, particularly in demanding industrial and railway applications (traction). This 3-pole contactor is designed for extended application ranges, offering superior performance with a compact design and high contact reliability.

Featuring a powerful 110 V DC solid-state operating mechanism and an integrated varistor for surge protection, it ensures a long service life under tough ambient conditions. The combination of screw terminals for the main circuit and spring-loaded terminals for the control/auxiliary circuit provides flexible and vibration-proof wiring solutions.

Benefit & Features

• Reliability in Harsh Environments: Specifically designed as a traction contactor with an extended operating and temperature range, making it ideal for railway and other extreme applications.
• High Performance in a Compact Size: Part of the SIRIUS modular system, offering robust 51A/22kW switching performance in a space-saving S2 frame size.
• Enhanced Coil Protection: The solid-state operating mechanism with an integrated varistor provides reliable surge suppression, protecting the coil and ensuring a longer operational lifespan.
• Flexible Wiring: Combines screw terminals for secure, high-current main circuit connections with fast, maintenance-free spring-loaded terminals for control/auxiliary wiring.
• IE3/IE4 Ready: Fully prepared for use with highly efficient IE3 and IE4 motors.
• Simplified Design: Includes 1 NO + 1 NC integrated auxiliary contacts to reduce complexity and wiring effort.

Application/Function

The Siemens 3RT2036-3XF40-0LA2 functions as a robust power contactor for switching 3-phase AC motors and other electrical loads. Its traction-rated design makes it the preferred choice for applications that require high endurance and resilience against fluctuations, including:

• Railway and Transportation Systems
• Heavy Industrial Motor Switching
• Direct On Line (DOL) Starters
• Controlling resistive and moderately inductive loads (AC-3e/AC-3)

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