Power Contactors, AC-3 18A, 7.5kW/400V, AC Coil, 3-Pole, Screw Terminals, S0 Size - 3RT2023-1AH20

🔹 Power Contactor with Mirror Contact Elements, Screw Terminals, AC Coil – 3RT2023-1AH20

The Siemens 3RT2023-1AH20 is a SIRIUS 3RT2 series S0 frame 3-pole power contactor designed for reliable switching of three-phase motors up to around 4 kW at 400 V AC. It comes with mirror contact elements, screw terminals, and an AC control coil (typically 48 V AC, 50/60 Hz depending on variant), making it suitable for industrial motor starters, automation panels, and control systems.

This model belongs to the S0 frame size, which is widely used for medium-duty motor applications, offering better thermal performance and durability compared to S00 size contactors.

Based on Siemens SIRIUS 3RT2 S0 series specifications, the 3RT2023 family is generally rated around 9 A AC-3, supporting motors up to approximately 4 kW at 400 V AC, with standard 3-pole switching and auxiliary contact configurations (typically 1 NO + 1 NC depending on version).

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 confirm the actual ON/OFF state of the contactor.

With screw terminals, installation remains strong, vibration-resistant, and suitable for long-term industrial use in control cabinets.

🔹 Key Features

• Siemens SIRIUS 3RT2 series power contactor
• Model: 3RT2023-1AH20
• 3-pole motor switching contactor
• Rated AC-3 current: ~9 A
• Motor rating: ~4 kW @ 400 V AC
• Control coil: AC coil (commonly 48 V AC variant family)
• Mirror contact elements for safety feedback
• Screw terminal connection system
• Compact S0 frame size
• Auxiliary contacts (variant dependent, 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