Backorder available · Factory lead time 2–3 weeks.
The Siemens 3RT2028-2FB44-3MA0 is a high-performance SIRIUS 3RT2 Power Contactor designed for switching motors and other resistive loads in industrial control applications. As a key component in the SIRIUS modular system, this size S0 contactor combines a compact design with robust capabilities, ensuring reliable and energy-efficient operation.
It is rated for AC-3e/AC-3 operation up to 38 Amps and 18.5 kW at 400V. The coil operates on a 24 V DC voltage, and for enhanced protection and operational life, it includes a plugged-in diode combination to suppress coil opening voltage peaks. Its main features include a secure spring-loaded terminal connection for quick, vibration-proof wiring and integrated auxiliary switches (2 NO + 2 NC) for monitoring and control circuits.
The Siemens 3RT2028-2FB44-3MA0 primarily functions as an electromechanical switching device for safely and reliably switching three-phase loads, most commonly AC motors. It is suitable for applications requiring high switching frequency, remote control of machinery, and integration into automated systems (PLC-controlled systems utilizing a 24 V DC output).
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| SKU / Model | 3RT2028-2FB44-3MA0 |
|---|---|
| Weight | 0.709 kg |
| Dimensions | 108.5 × 54 × 163 mm |
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