The Siemens 3RT2018-1AB02 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 a 24 V AC control coil (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 a higher-capacity option compared to 12A contactors and suitable for medium-duty motor switching applications.
According to Siemens official catalogue data, the 3RT2018-1AB02 includes 1 NC auxiliary contact, 3 NO main contacts, and screw terminal connections, 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, allowing the controller to verify the true ON/OFF state of the contactor and improve operational safety.
With screw terminals, wiring remains secure, vibration-resistant, and suitable for long-term industrial use.
• Siemens SIRIUS 3RT2 series power contactor
• Model: 3RT2018-1AB02
• 3-pole motor switching contactor
• Rated AC-3 current: 16 A
• Motor rating: 7.5 kW @ 400 V AC
• Control coil: 24 V AC (50/60 Hz)
• Mirror contact elements for safety feedback
• Screw terminal connection system
• Compact S00 frame size
• 1 NC auxiliary contact
• High electrical endurance and reliability
• Suitable for industrial automation and MCC panels
• Compatible with Siemens SIRIUS modular accessories
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2018-1AB02 |
| Product Type | Power Contactor |
| Contactor Configuration | 3 Pole |
| Rated Current (AC-3) | 16 A |
| Motor Rating | 7.5 kW @ 400 V AC |
| Coil Type | 24 V AC (50/60 Hz) |
| Auxiliary Contact | 1 NC |
| Contact Feedback | Mirror Contact Elements |
| Terminal Type | Screw Terminals |
| Frame Size | S00 |
| Application | Motor Control & Power Switching |
| Brand | Siemens |
No reviews yet.