The Siemens 3RT2018-1AP02 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 features mirror contact elements, screw terminal connections, and an AC/DC control coil (230 V AC, 50/60 Hz), making it suitable for motor control centers (MCCs), automation systems, HVAC applications, and industrial power distribution systems.
This model belongs to the compact S00 frame size and is rated for AC-3 / AC-3e duty up to 16 A, making it suitable for medium-duty motor switching applications with stable coil performance for both AC and DC control supply compatibility (depending on variant design).
According to Siemens SIRIUS datasheets, the 3RT2018-1AP02 includes 3 NO main contacts, 1 NC auxiliary contact, screw terminals, and S00 size construction, ensuring reliable integration in industrial control panels.
The mirror contact elements provide mechanically linked feedback of the main contacts, which is essential for PLC interlocking, safety circuits, and machine monitoring systems, allowing the controller to verify the actual ON/OFF status of the contactor for safe operation and diagnostics.
With screw terminals, wiring remains secure, vibration-resistant, and suitable for long-term industrial use.
• Siemens SIRIUS 3RT2 series power contactor
• Model: 3RT2018-1AP02
• 3-pole motor switching contactor
• Rated AC-3 current: 16 A
• Motor rating: 7.5 kW @ 400 V AC
• Control coil: 230 V AC (50/60 Hz) (AC/DC compatible variant family)
• Mirror contact elements for safety feedback
• Screw terminal connection system
• Compact S00 frame size
• 3 NO main contacts + 1 NC auxiliary contact
• High electrical endurance and reliable switching
• Suitable for industrial automation and MCC panels
• Compatible with Siemens SIRIUS modular accessories
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2018-1AP02 |
| Product Type | Power Contactor |
| Contactor Configuration | 3 Pole |
| Rated Current (AC-3) | 16 A |
| Motor Rating | 7.5 kW @ 400 V AC |
| Coil Type | 230 V AC 50/60 Hz (AC/DC variant family) |
| Auxiliary Contact | 1 NC |
| Main Contacts | 3 NO |
| Contact Feedback | Mirror Contact Elements |
| Terminal Type | Screw Terminals |
| Frame Size | S00 |
| Application | Motor Control & Power Switching |
| Brand | Siemens |
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