Siemens SIRIUS 3RT2026-2AG20 Power Contactor 25A, 11kW, 110V AC, Spring Terminal S0 Original Brand New

Overview

The Siemens 3RT2026-2AG20 is a high-performance, 3-pole power contactor from the globally recognized SIRIUS 3RT20 product family. Designed for switching motors and other resistive loads, this robust device meets the latest standards (AC-3e/AC-3) with a rated operating current of 25 A and a power rating of 11 kW at 400 V.

It features a reliable 110 V AC, 50/60 Hz operating coil and includes integrated 1 NO + 1 NC auxiliary contacts. The innovative spring-loaded terminal technology ensures fast, vibration-proof, and maintenance-free wiring, making it ideal for modern industrial control panels. Its compact Size S0 design is perfect for space-saving installations.

Benefit

1. High Reliability & Performance: Part of the SIRIUS modular system, offering excellent switching performance and high contact reliability for industrial applications.
2. Fast & Secure Wiring: Spring-loaded terminals (also known as spring-type or spring-clamp terminals) drastically reduce wiring time and maintenance by providing a reliable, vibration-proof connection without the need for periodic retightening.
3. Space-Saving Design: The compact Size S0 contactor helps optimize panel space, a critical factor in control panel design.
4. Integrated Auxiliary Contacts: The built-in 1 NO and 1 NC contacts simplify control circuit wiring and minimize the need for external auxiliary blocks.
5. Global Standard Compliance: Meets major international standards like IEC and UL/CSA, ensuring suitability for worldwide use and compliance (IE3/IE4 ready).

Function

The Siemens 3RT2026-2AG20 functions as an electromechanical switching device used primarily for remotely controlling electrical loads, particularly motors.

• Motor Control: It reliably starts and stops 3-phase AC motors up to 11 kW at 400V.
• Coil Operation: When the $110\text{V AC}$ control voltage is applied to the coil, it generates a magnetic field, pulling the armature to close the 3-pole main contacts.
• Auxiliary Signaling: The $1\text{NO}+1\text{NC}$ auxiliary contacts provide feedback or interlock signals to the control system, indicating the contactor’s current switching status.

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