🔹 Siemens SIRIUS 3RT2 Power Contactor – 3RT2028-1AC20 (AC-3 Duty, 3-Pole, 24V AC Coil, S0 Size, 38A Class, 3NO Auxiliary Contacts)
The Siemens 3RT2028-1AC20 is a high-performance SIRIUS 3RT2 series 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 a compact yet robust construction suitable for industrial control panels and automation systems.
This model features a 3-pole configuration with durable screw-type terminals, ensuring secure wiring connections and long-term operational stability in demanding electrical environments.
It is equipped with a 24V AC coil variant (AC20), making it suitable for standard industrial control circuits where AC control voltage is used for motor switching applications.
A key feature of this variant is its integrated auxiliary contact configuration (3NO), providing reliable feedback and control signal integration in motor control and automation systems.
Built on the Siemens SIRIUS modular platform, it supports seamless integration with overload relays and accessory modules, enabling flexible and scalable panel design.
With strong electrical endurance, high switching capacity, and stable performance under frequent operations, this contactor ensures dependable operation in industrial environments.
• Genuine Siemens SIRIUS 3RT2 Series Contactor
• Model: 3RT2028-1AC20
• 3-Pole heavy-duty switching design
• AC-3 duty optimized for motor control applications
• 24V AC coil (AC20 variant)
• S0 frame size (38A class)
• Screw terminal connection for secure wiring
• Integrated auxiliary contacts (3NO)
• Compact modular design for panel integration
• High electrical and mechanical endurance
• Compatible with Siemens overload relays & accessories
• Suitable for industrial automation systems
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2028-1AC20 |
| Product Type | Power Contactor |
| Frame Size | S0 |
| Poles | 3 Pole |
| Utilization Category | AC-3 Duty |
| Rated Current | ~38 A |
| Power Rating | ~18.5 kW @ 400V |
| Coil Voltage | 24V AC (AC20) |
| Auxiliary Contacts | 3NO |
| Terminal Type | Screw Terminals |
| Mounting Type | Panel / DIN Rail (via accessories) |
| Brand | Siemens |
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