🔹 Siemens SIRIUS 3RT2 Power Contactor – 3RT2026-2XB400LA2 (AC-3 Duty, 3-Pole, 24V DC Coil, S0 Size, 25A Class, Extended Operating Range, 1NO+1NC Auxiliary)
The Siemens 3RT2026-2XB400LA2 is a high-performance SIRIUS 3RT2 series traction-grade power contactor designed for reliable switching of motors and industrial loads under AC-3 duty applications. It belongs to the S0 frame size category, offering compact construction with enhanced electrical endurance and stable performance in demanding industrial environments.
This model features a 3-pole configuration with robust screw-type terminals, ensuring secure and vibration-resistant wiring connections suitable for continuous industrial operation.
It is equipped with a 24V DC coil variant (XB400LA2) and a solid-state operating mechanism with integrated varistor, providing improved switching stability and coil protection against voltage surges. It also supports an extended operating range (0.7–1.25 Us) for reliable performance under fluctuating control voltages.
The contactor typically includes an integrated auxiliary contact configuration (1NO + 1NC), enabling accurate 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, making it suitable for modern industrial control panels and high-reliability applications.
With strong mechanical life, high electrical endurance, and stable switching behavior, this contactor is designed for continuous-duty industrial environments.
• Genuine Siemens SIRIUS 3RT2 Series Contactor
• Model: 3RT2026-2XB400LA2
• 3-Pole heavy-duty switching design
• AC-3 duty optimized for motor control applications
• 24V DC coil (XB400LA2 variant)
• Solid-state operating mechanism
• Integrated varistor for surge 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 systems
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2026-2XB400LA2 |
| 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 | 24V DC (XB400LA2) |
| Operating Mechanism | Solid-state electronic drive |
| Auxiliary Contacts | 1NO + 1NC |
| Terminal Type | Screw Terminals |
| Special Features | Extended operating range, varistor protection |
| Mounting Type | Panel / DIN Rail (via accessories) |
| Brand | Siemens |
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