Power Contactors, SIRIUS 3RT2 Series, 3-Pole, Screw Terminals, AC-3 Duty, Coil Variant AC20 - 3RT2025-1AC20

🔹 Power Contactor with Mirror Contact Elements, Screw Terminals, AC Coil – 3RT2025-1AC20

The Siemens 3RT2025-1AC20 is a SIRIUS 3RT2 series S0 frame 3-pole power contactor designed for reliable switching of three-phase motors up to 7.5 kW at 400 V AC. It is equipped with mirror contact elements, screw terminals, and a 24 V AC control coil (50/60 Hz), making it suitable for industrial motor control, MCC panels, HVAC systems, and automation circuits.

This model belongs to the S0 size range, which is widely used in industrial applications where higher durability and current handling are required compared to S00 contactors.

According to Siemens official SIRIUS datasheets, the 3RT2025 series is rated at 17 A AC-3, supporting motor loads up to 7.5 kW at 400 V AC, with standard 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 important 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 panels.

🔹 Key Features

• Siemens SIRIUS 3RT2 series power contactor
• Model: 3RT2025-1AC20
• 3-pole motor switching contactor
• Rated AC-3 current: 17 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 S0 frame size
• Auxiliary contacts: typically 1 NO + 1 NC
• High electrical endurance and reliable switching
• Suitable for industrial automation, MCC panels, and HVAC systems
• Compatible with Siemens SIRIUS modular accessories