The Siemens 3RT2025-1AF00 is a SIRIUS 3RT2 series S0 frame 3-pole power contactor designed for reliable switching of three-phase motors up to 7.5 kW at 400 V AC. It features mirror contact elements, screw terminals, and a 110 V AC control coil (50/60 Hz), making it suitable for industrial motor control, automation panels, and HVAC starter systems.
This model belongs to the S0 size range, which is used for medium-duty motor applications and offers higher current handling and thermal capacity compared to S00 contactors.
According to Siemens SIRIUS technical datasheets, the 3RT2025 series is rated at 17 A AC-3, supporting motor loads up to 7.5 kW at 400 V AC, with 3 NO main contacts and auxiliary contacts (typically 1 NO + 1 NC) depending on configuration.
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 the real switching state of the contactor for safe operation.
With screw terminals, installation remains robust, vibration-resistant, and suitable for long-term industrial use in control cabinets.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2025-1AF00 |
| Product Type | Power Contactor |
| Contactor Configuration | 3 Pole |
| Rated Current (AC-3) | 17 A |
| Motor Rating | 7.5 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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