The Siemens 3RT2024-1AG20 is a SIRIUS 3RT2 series S0 frame 3-pole power contactor designed for switching three-phase motors up to 5.5 kW at 400 V AC. It features mirror contact elements, screw terminals, and an AC control coil (110 V AC, 50/60 Hz), making it suitable for industrial motor starters, control panels, HVAC systems, and automation applications.
This model belongs to the S0 size range, which is widely used for medium-duty motor control applications and offers a good balance between compact size and higher current capacity.
According to Siemens SIRIUS datasheets, the 3RT2024 series is rated at 12 A AC-3, supporting motors up to 5.5 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 essential for PLC interlocking, safety circuits, and machine status monitoring, ensuring the controller can verify the actual switching state of the contactor for safe operation.
With screw terminals, the device ensures strong, vibration-resistant wiring suitable for long-term industrial use in control cabinets.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2024-1AG20 |
| Product Type | Power Contactor |
| Contactor Configuration | 3 Pole |
| Rated Current (AC-3) | 12 A |
| Motor Rating | 5.5 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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