Siemens 3RT2017-2LF41 SIRIUS 3RT2 Power Contactor, 12A, 5.5kW/400V, 3-Pole, 110V DC Coil, Spring-Loaded Terminal, Size S00 Original Brand New

Overview

The Siemens 3RT2017-2LF41 is a high-performance, 3-pole SIRIUS 3RT2 power contactor designed for switching motors and other resistive loads up to $5.5\text{ kW}$ (at $400\text{ V}$). Part of the reliable SIRIUS modular system, this compact Size S00 contactor features a durable $110\text{ V DC}$ control coil, making it ideal for low-voltage industrial control systems. It is equipped with spring-loaded terminals for fast, reliable, and vibration-proof wiring, ensuring maximum operational reliability. An integrated varistor provides robust surge suppression, protecting the coil and extending the device's lifespan.

Benefit and Advantages

• Fast, Maintenance-Free Wiring: The innovative spring-loaded terminal technology allows for quick, tool-free wiring and provides a secure, gas-tight, vibration-proof connection, significantly reducing installation and maintenance time.
• High Reliability: The integrated varistor effectively dampens switching surges in the $110\text{ V DC}$ coil, protecting sensitive control electronics and increasing the overall service life of the contactor.
• Space-Saving Design: The compact S00 frame size minimizes space requirements in the control cabinet, allowing for high packing density within the SIRIUS modular system.
• IE3/IE4 Ready: Fully suitable for controlling high-efficiency motors, meeting the stringent demands of the new AC-3e utilization category.
• Global Standard Compliant: Approved worldwide (e.g., IEC and UL/CSA), ensuring suitability for global applications and machinery export.

Function and Application

The Siemens 3RT2017-2LF41 is primarily used as a main contactor in low-voltage industrial control systems.

• Function: It is an electromechanical switching device used to reliably switch 3-phase AC motors and resistive loads on and off. The $110\text{ V DC}$ coil controls the main contacts, while the $1\text{ NO}$ auxiliary contact is used for signaling and interlocking circuits.
• Applications:
  • Switching of three-phase asynchronous motors up to $5.5\text{ kW}$.
  • Integration into automated machinery and motor starters (direct-on-line, reversing, wye-delta).
  • Controlling heating elements, lighting systems, and other resistive loads.
  • Use in systems requiring robust DC coil control and surge protection.

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