The Siemens 3RT2023-1AG208K is a SIRIUS 3RT2 series S0 frame 3-pole power contactor designed for reliable switching of three-phase motors up to 4 kW at 400 V AC. It comes with mirror contact elements, screw terminals, and a 110 V AC control coil (50/60 Hz), making it suitable for industrial motor starters, control panels, and automation systems.
This model belongs to the S0 size range, which is commonly used for medium-duty motor loads and offers higher performance and thermal capacity compared to S00 frame contactors.
According to Siemens SIRIUS technical data, the 3RT2023 series supports AC-3 operation around 9 A, suitable for approximately 4 kW motor loads at 400 V AC, with standard 3-pole switching and auxiliary contact configurations (typically 1 NO + 1 NC depending on variant).
The mirror contact elements provide mechanically linked feedback of the main contacts, which is important for PLC interlocking, safety circuits, and machine status monitoring, ensuring the controller can verify whether the contactor is truly ON or OFF.
With screw terminals, the installation is strong, vibration-resistant, and suitable for long-term industrial operation in control cabinets.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2023-1AG208K |
| Product Type | Power Contactor |
| Contactor Configuration | 3 Pole |
| Rated Current (AC-3) | ~9 A |
| Motor Rating | 4 kW @ 400 V AC |
| Coil Type | 110 V AC |
| Auxiliary Contact | 1 NO + 1 NC (variant dependent) |
| Contact Feedback | Mirror Contact Elements |
| Terminal Type | Screw Terminals |
| Frame Size | S0 |
| Application | Motor Control & Power Switching |
| Brand | Siemens |
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