The Siemens 3RT2018-1AP01 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, spring-loaded (push-in) terminals, and a 230 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 suitable for medium-duty motor switching applications with fast wiring via spring terminal technology.
According to Siemens catalog data, the 3RT2018-1AP01 includes 3 NO main contacts and 1 NO auxiliary contact, along with DIN rail mounting compatibility and screw/spring clamp terminal options depending on configuration.
The integrated 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 real ON/OFF state of the contactor for safe operation and diagnostics.
With spring-loaded terminals, wiring becomes faster, tool-less, and more vibration-resistant compared to traditional screw terminals, making it suitable for modern industrial control panels.
• Siemens SIRIUS 3RT2 series power contactor
• Model: 3RT2018-1AP01
• 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)
• Mirror contact elements for safety feedback
• Spring-loaded (push-in) terminals for fast wiring
• Compact S00 frame size
• 3 NO main contacts + 1 NO 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 | 3RT2018-1AP01 |
| 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) |
| Auxiliary Contact | 1 NO |
| Main Contacts | 3 NO |
| Contact Feedback | Mirror Contact Elements |
| Terminal Type | Spring-loaded (push-in) |
| Frame Size | S00 |
| Application | Motor Control & Power Switching |
| Brand | Siemens |
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