Siemens 3RT2018-2XF41-2LA2 SIRIUS Contactor Traction, 16A, 7.5kW, DC Control, S00 Frame Original Brand New

Overview

The Siemens 3RT2018-2XF41-2LA2 is a high-performance SIRIUS traction contactor designed for demanding applications in railway and other traction systems. This 3-pole contactor is built for AC-3e/AC-3 operational class, capable of handling 16 A and 7.5 kW at 400 V. Its robust design features a solid-state operating mechanism with an integrated varistor, ensuring reliable switching and protection against voltage spikes. The 72-125 V DC control voltage range (0.7−1.25×Uc​) provides flexible power options. This model includes 1 normally open (NO) auxiliary contact and utilizes a convenient spring-loaded terminal system for fast and secure wiring. The compact S00 frame size and suspended mounting position make it ideal for space-constrained installations.

Key Benefit

• Reliable Performance: Engineered for the rigorous demands of traction applications, offering consistent and safe operation.
• Space-Saving Design: The compact S00 frame size allows for efficient use of panel space.
• Enhanced Protection: Integrated varistor protects the control circuit and prolongs the lifespan of the contactor by suppressing voltage surges.
• Flexible Control: The wide DC control voltage range ($72-125$ V) accommodates various power supply configurations.
• Quick Installation: Spring-loaded terminals simplify wiring, reducing installation time and ensuring a vibration-proof connection.
• Built-in Auxiliary Contact: The integrated 1 NO auxiliary contact provides additional signaling or interlocking functionality without the need for external add-ons.

Function

• Switching and Control: Acts as a primary switching device for electrical loads, specifically motors in traction applications.
• Circuit Protection: The integrated varistor provides surge suppression for the control coil.
• Signal Output: The auxiliary contact can be used to signal the status of the main contacts (e.g., to a PLC or control system).
• Load Management: Ideal for high-inrush current applications typical in motor starting.

Technical Specification

• Product Number: 3RT2018-2XF41-2LA2
• Product Type: Traction Contactor
• Rated Operational Current (Ie): 16 A
• Rated Operational Power (P): 7.5 kW at 400 V
• Number of Poles: 3-pole
• Operational Class: AC-3e / AC-3
• Control Supply Voltage (Us): 72-125 V DC
• Control Type: Solid-state operating mechanism with integrated varistor
• Auxiliary Contacts: 1 NO (Normally Open)
• Terminal Type: Spring-loaded terminal
• Frame Size: S00
• Mounting Position: Suspended mounting

Application

• Railway and tram systems
• Electric vehicles and machinery
• Industrial automation
• Motor control in demanding environments

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