Siemens 3RT2026-1AV04 SIRIUS 3RT2 Power Contactor, 25A, 11kW, 400V AC Coil, Size S0, 2NO+2NC, Screw Terminal Original Brand New

Overview

The Siemens 3RT2026-1AV04 is a high-performance 3-pole power contactor from the SIRIUS 3RT2 modular system, designed for reliable switching of motors and other industrial loads. This compact Size S0 contactor is rated for 25 A (AC-3e/AC-3) and an operational power of 11 kW at 400 V. It features a robust 400 V AC, 50 Hz coil voltage and is equipped with a integrated, removable auxiliary switch block providing 2 Normally Open (NO) and 2 Normally Closed (NC) contacts.

The main and auxiliary circuits utilize secure screw terminals for easy and dependable wiring. As part of the SIRIUS family, the 3RT2026-1AV04 is known for its high contact reliability, long mechanical service life, and worldwide approvals (e.g., IEC and UL/CSA), making it an IE3/IE4-ready component for modern, efficient load feeders.

Technical Specification

• Product Number (MPN): 3RT2026-1AV04
• Product Brand Name: SIRIUS
• Contactor Type: Power Contactor for switching motors, AC switching
• Frame Size: S0
• Poles: 3-pole
• Rated Operational Current (AC-3/AC-3e, 400 V): 25 A
• Rated Operational Power (AC-3, 400 V): 11 kW
• Control Supply Voltage (Coil): 400 V AC, 50 Hz
• Auxiliary Contacts: 2 NO + 2 NC (Removable auxiliary switch block)
• Main Circuit Connection: Screw Terminal
• Rated Insulation Voltage (Ui): 690 V (for main and auxiliary circuit)
• Mechanical Service Life (typical): 10,000,000 operating cycles
• Standards: IE3/IE4-ready, IEC, UL/CSA Approved

Benefit & Advantages

• Space-Saving Design: Part of the compact SIRIUS modular system (Size S0).
• High Reliability: Exceptional contact reliability and robust mechanical service life.
• Integrated Monitoring: Comes with 2 NO and 2 NC integrated auxiliary contacts, simplifying design and reducing accessory complexity.
• Universal Application: Approved for worldwide use (IEC, UL/CSA) and climate-resistant, suitable for diverse industrial environments.
• Simplified Wiring: Features user-friendly screw terminals and is compatible with various accessories and link modules for reduced wiring expense.
• Future-Proof: IE3/IE4-ready for compliance with modern energy efficiency standards for motor starting.

Function / Application

The Siemens 3RT2026-1AV04 Power Contactor is the central switching element in low-voltage load feeders. Its primary function is the switching (ON/OFF) of 3-phase AC motors and other resistive or inductive loads up to 11 kW (400V).

It is typically combined with thermal or electronic overload relays (e.g., SIRIUS 3RU2) to create a complete motor starter, protecting the motor from overcurrent. The integrated 2 NO + 2 NC auxiliary contacts provide signaling and interlocking functions for automation and control systems (PLCs).