3RT14666AF368K | Contactor, 400 A, AC (50…60 Hz) / DC operation 110…127 V UC aux. contacts 2 NO + 2 NC 3-pole – Siemens

Product Overview

The Siemens 3RT14666AF368K is a high-performance contactor designed for industrial applications requiring reliable switching of high currents. It is suitable for both AC and DC operations, making it versatile for various electrical systems.

Key Features

• Rated Current: 400 A
• Operating Voltage: AC (50…60 Hz) / DC 110…127 V
• Auxiliary Contacts: 2 NO (Normally Open) + 2 NC (Normally Closed)
• Poles: 3-pole
• Mounting Type: Screw mounting
• Enclosure Material: Robust plastic housing
• Contact Material: Silver alloy for high durability and low contact resistance
• Coil Voltage: 110…127 V UC
• Mechanical Life: Up to 10 million operations
• Electrical Life: Up to 1 million operations at rated current
• Protection Class: IP20
• Ambient Temperature Range: -25°C to +60°C
• Standards Compliance: IEC/EN 60947-4-1, UL 508, CSA C22.2 No. 14

Applications

The Siemens 3RT14666AF368K contactor is ideal for use in:

• Motor control centers
• Industrial automation systems
• Power distribution systems
• Heating, ventilation, and air conditioning (HVAC) systems
• Pump and compressor controls

Technical Specifications

Additional Information

For more detailed technical information, installation guidelines, and safety instructions, please refer to the official Siemens product documentation or contact Siemens technical support.