🔹 Siemens SIRIUS 3RT2 Power Contactor – 3RT2038-1AH20 (AC-3 Duty, 3-Pole, 120V AC Coil, S3 Size, ~80A Class, 1NO + 1NC Auxiliary)
The Siemens 3RT2038-1AH20 is a heavy-duty SIRIUS 3RT2 series power contactor designed for reliable switching of motors and industrial loads under AC-3 / AC-3e duty applications. As part of the S3 frame size category, it offers high switching performance, robust construction, and dependable operation for demanding industrial motor control and power distribution systems.
This model features a 3-pole configuration with durable screw-type terminals, ensuring secure electrical connections and long-term reliability in industrial environments.
It is equipped with a 120V AC coil (AH20 variant), making it suitable for control circuits, motor starters, and automation systems requiring 120V AC control voltage.
The contactor includes integrated auxiliary contacts (1NO + 1NC), providing reliable feedback, interlocking, and control signal integration for enhanced operational safety and automation functionality.
Built on the Siemens SIRIUS modular platform, it supports seamless integration with overload relays and accessories, enabling flexible and scalable panel designs.
With high electrical endurance and strong switching capability, the 3RT2038-1AH20 is well-suited for heavy-duty industrial applications requiring reliable motor control and long service life.
• Genuine Siemens SIRIUS 3RT2 Series Contactor
• Model: 3RT2038-1AH20
• 3-Pole heavy-duty switching design
• AC-3 / AC-3e duty optimized for motor control applications
• 120V AC coil (AH20 variant)
• S3 frame size (~80A class)
• Screw terminal connection for secure wiring
• Integrated auxiliary contacts (1NO + 1NC)
• High electrical and mechanical endurance
• Compatible with Siemens overload relays & accessories
• Suitable for industrial automation and motor control systems
• Modular and scalable panel design
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2038-1AH20 |
| Product Type | Power Contactor |
| Frame Size | S3 |
| Poles | 3 Pole |
| Utilization Category | AC-3 / AC-3e |
| Rated Current | ~80 A |
| Power Rating | ~37 kW @ 400V |
| Coil Voltage | 120V AC (AH20) |
| Auxiliary Contacts | 1NO + 1NC |
| Terminal Type | Screw Terminals |
| Mounting Type | Panel Mount |
| Brand | Siemens |
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