Siemens SIRIUS 3RT2035-3AC20 Power Contactor, 41A, 18.5kW, 24V AC Coil, Spring Terminal, Size S2 Original Brand New

Overview

The Siemens 3RT2035-3AC20 power contactor is a highly efficient, compact, and reliable switching device from the SIRIUS 3RT2 series, designed for switching motors and other resistive loads up to $18.5\text{ kW}$ at $400\text{ V}$. As a core component in any industrial control system, this 3-pole contactor is rated for $41\text{ A}$ (AC-3e/AC-3) and utilizes a standard $24\text{ V AC}$ coil voltage.

It features a robust screw terminal connection for the main circuit and a user-friendly, vibration-proof spring-loaded terminal for the control and auxiliary circuits, ensuring fast and secure wiring. The integrated $1\text{ NO}+1\text{ NC}$ auxiliary contacts simplify integration into complex control systems.

Benefit & Features

• Compact Design, High Performance: Part of the SIRIUS modular system, offering maximum performance in a space-saving Size S2 form factor.
• IE3/IE4 Ready: Optimized for use with high-efficiency motors, future-proofing your control applications.
• Dual Connection Technology: Combines reliable screw terminal connections for the high-current main circuit with fast, maintenance-free, and vibration-proof spring-loaded terminals for the control wiring.
• Enhanced Reliability: Integrated $1\text{ NO}+1\text{ NC}$ auxiliary contacts reduce complexity and ensure immediate operational status feedback.
• Global Standard Compliant: Approved for worldwide use (e.g., IEC and UL/CSA), making it ideal for international machinery.
• Energy Efficiency: Low power loss, contributing to energy savings and reduced heat in the control cabinet.
• Wide Application Range: Suitable for standard motor switching, lighting control, and other resistive load applications.

Function

The 3RT2035-3AC20 contactor functions as an electrically controlled switch, primarily used for switching 3-phase motors (AC-3e/AC-3). When the $24\text{ V AC}$ control coil is energized, it closes the three main power contacts, allowing current up to $41\text{ A}$ to flow to the load. The auxiliary contacts simultaneously change state ($1\text{ NO}$ closes, $1\text{ NC}$ opens) to provide feedback to the PLC or control system, ensuring safe and reliable operation in motor starters and control panels.

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