The Siemens 3RT2018-2XB412LA2 is a SIRIUS 3RT2 series 3-pole power contactor designed for reliable switching of three-phase motors up to 7.5 kW at 400 V AC. It comes with mirror contact elements, screw terminals, and a 24 V DC electronic control coil (solid-state compatible design family), making it suitable for modern PLC-based automation and motor control systems.
This model belongs to the compact S00 size range and is part of Siemens’ solid-state / low-power consumption coil variants, designed to reduce coil energy usage and improve control reliability in industrial panels.
According to Siemens SIRIUS 3RT2 S00 series specifications, the platform supports AC-3 operation up to 16 A and 7.5 kW motor loads at 400 V AC, ensuring stable performance in standard motor switching applications.
The mirror contact system provides mechanically linked feedback of the main contacts, which is essential for PLC interlocking, safety circuits, and machine status monitoring, ensuring that the controller always knows the real switching state of the contactor.
With screw terminals, installation remains robust, vibration-resistant, and suitable for long-term industrial operation in control cabinets.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2018-2XB412LA2 |
| Product Type | Power Contactor |
| Contactor Configuration | 3 Pole |
| Rated Current (AC-3) | 16 A |
| Motor Rating | 5.5–7.5 kW @ 400 V AC (family range) |
| Coil Type | 24 V DC (electronic / low consumption type) |
| Auxiliary Contact | 1 NO (series dependent) |
| Contact Feedback | Mirror Contact Elements |
| Terminal Type | Screw Terminals |
| Frame Size | S00 |
| Application | Motor Control & Automation |
| Brand | Siemens |
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