🔹 Siemens SIRIUS 3RT2 Power Contactor – 3RT2026-2XF400LA2 (AC-3 Duty, 3-Pole, 110V DC Coil, S0 Size, 25A Class, Extended Operating Range, 1NO+1NC Auxiliary)
The Siemens 3RT2026-2XF400LA2 is a high-reliability SIRIUS 3RT2 series traction-grade power contactor designed for switching motors and industrial loads under AC-3 duty applications. It belongs to the S0 frame size category, offering compact construction with strong electrical endurance and stable performance in demanding industrial environments.
This model features a 3-pole configuration with durable screw-type terminals, ensuring secure and vibration-resistant wiring connections suitable for industrial control panels and switchgear systems.
It is equipped with a 110V DC coil variant (XF400LA2) and an electronic operating mechanism with integrated varistor protection, providing improved switching stability and coil protection against voltage surges.
A key feature of this variant is its extended operating range (0.7–1.25 Us), ensuring reliable operation even under fluctuating control voltage conditions, making it suitable for harsh industrial and traction applications.
The contactor typically includes an integrated auxiliary contact configuration (1NO + 1NC), enabling precise feedback and control signal integration in automation and motor control systems.
Built on the Siemens SIRIUS modular platform, it allows seamless integration with overload relays and accessory modules, supporting flexible and scalable panel design for modern industrial installations.
With high mechanical life, strong electrical endurance, and stable switching performance, this contactor is engineered for continuous-duty industrial operation.
• Genuine Siemens SIRIUS 3RT2 Series Contactor
• Model: 3RT2026-2XF400LA2
• 3-Pole heavy-duty switching design
• AC-3 duty optimized for motor control applications
• 110V DC coil (XF400LA2 variant)
• Electronic drive mechanism with varistor protection
• Extended operating range (0.7–1.25 Us)
• S0 frame size (25A class)
• Screw terminal connection for secure wiring
• Integrated auxiliary contacts (1NO + 1NC)
• High electrical and mechanical endurance
• Suitable for industrial automation and traction applications
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2026-2XF400LA2 |
| Product Type | Power Contactor |
| Frame Size | S0 |
| Poles | 3 Pole |
| Utilization Category | AC-3 Duty |
| Rated Current | ~25 A |
| Power Rating | ~11 kW @ 400V |
| Coil Voltage | 110V DC (XF400LA2) |
| Operating Mechanism | Electronic drive |
| Protection | Integrated varistor |
| Special Feature | Extended operating range |
| Auxiliary Contacts | 1NO + 1NC |
| Terminal Type | Screw Terminals |
| Mounting Type | Panel / DIN Rail (via accessories) |
| Brand | Siemens |
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