Siemens SIRIUS 3RT2037-3XF40-0LA2 Traction Contactor, S2, 65A, 30kW, 110V DC Coil, Spring-Loaded/Screw Terminals Original Brand New

Overview: Siemens 3RT2037-3XF40-0LA2 Traction Contactor

The Siemens 3RT2037-3XF40-0LA2 is a high-performance, 3-pole traction contactor from the SIRIUS 3RT2 family, designed for reliable switching of motors under demanding conditions, especially in applications like rail transport or other environments requiring robust, extended operating ranges. This Size S2 power contactor is rated for 65 A (AC-3e/AC-3) and handles up to 30 kW at 400 V.

Benefit

1. High Reliability in Tough Environments: Specifically designed as a traction contactor with an extended operating and temperature range, ensuring performance under harsh ambient conditions.
2. Space-Saving and Modular: Part of the modular Siemens SIRIUS system (Size S2), offering compact design and simple integration with other low-voltage components.
3. Enhanced Coil Protection: The integrated varistor suppresses switch-off voltage peaks, protecting the control circuit and prolonging the coil's lifespan.
4. Flexible & Robust Wiring: Features secure screw terminals for the high-current main circuit and time-saving, vibration-proof spring-loaded terminals for control wiring.
5. Globally Compliant: Climate-resistant and approved for worldwide use (e.g., IEC and UL/CSA), making it suitable for global applications and IE3/IE4 ready.

Function & Application

The Siemens 3RT2037-3XF40-0LA2 functions as a robust power contactor for switching three-phase AC motors (AC-3/AC-3e) and other high-current loads.

• Function: Switches loads up to 65 A / 30 kW, utilizing a reliable 110 V DC electronic drive for coil actuation. The auxiliary contacts (1 NO + 1 NC) provide feedback and interlocking capability within control circuits.
• Ideal Applications:
  • Traction Systems: Motor control in trains, trams, and other rail applications.
  • Heavy Industrial Machinery: Switching motors in challenging industrial settings.
  • Any application requiring a contactor with an extended control voltage operating range and resilience to extreme ambient temperatures.

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