Siemens 3RT2027-2AC20 Power Contactor SIRIUS 3RT2, 32A, 15kW, 24V AC, S0 Original Brand New

Overview

The Siemens 3RT2027-2AC20 is a high-performance power contactor from the globally trusted SIRIUS 3RT2 series. Specifically designed for switching motors up to 15 kW at 400 V (AC-3/AC-3e), this 3-pole contactor is an essential component for efficient industrial control systems and motor starters.

Featuring a robust operating current of 32 A and a highly reliable 24 V AC, 50/60 Hz coil, the 3RT2027-2AC20 ensures precise switching operations. Its innovative spring-loaded terminals (sometimes referred to as spring-type terminals) provide a fast, vibration-proof, and maintenance-free connection, significantly reducing wiring time and increasing reliability in demanding industrial environments.

This unit is size S0 and comes with integrated auxiliary contacts (1 NO + 1 NC) for simplified circuit design and monitoring. The 3RT2027-2AC20 is a direct replacement for the proven 3RT1 series.

Benefit

1. High Reliability & Compact Design: Part of the modular SIRIUS system, offering high contact reliability in a small footprint (Size S0).
2. Fast, Maintenance-Free Wiring: The advanced spring-loaded terminal technology ensures secure, vibration-resistant connections without the need for periodic retightening.
3. Global Use: Approved for worldwide applications (IEC, UL/CSA, CCC), ensuring suitability for international machinery and projects.
4. Integrated Auxiliaries: Built-in 1 NO and 1 NC auxiliary contacts simplify control wiring and reduce the need for separate add-on blocks.
5. Energy Efficiency: Optimized design is ready for high-efficiency IE3/IE4 motors.

Function & Application

The 3RT2027-2AC20 contactor functions as an electrically controlled switch used for remote making and breaking of power circuits.

• Motor Control: Ideal for switching standard three-phase AC motors (direct-on-line starting).
• Load Switching: Used for controlling resistive and non-inductive loads.
• Industrial Automation: Core component in load feeders, motor starter assemblies (e.g., reversing contactor assemblies, wye-delta starters), and overall plant control systems.

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