Siemens 3RT2017-1BB44-3MA0 Power Contactor 12A, 5.5kW, 24V DC with 2 NO + 2 NC Aux Contacts Original Brand New

Overview

The Siemens 3RT2017-1BB44-3MA0 is a high-performance power contactor designed for reliable switching of electrical loads in industrial and commercial applications. As part of the SIRIUS family, this size S00 contactor is engineered for durability and efficiency. It is suitable for AC-3e/AC-3 applications with a rated current of 12 A and a power rating of 5.5 kW at 400 V. The compact design and robust construction make it an ideal choice for motor control, HVAC systems, and other machinery.

Key Features & Benefit

• High Performance: Rated for AC-3e/AC-3 operation, ensuring reliable performance under demanding motor loads.
• Energy Efficient: The 24 V DC coil offers low power consumption, reducing operational costs and heat generation.
• Integrated Auxiliary Contacts: Features two normally open (NO) and two normally closed (NC) auxiliary contacts, providing flexibility for control and signaling circuits. The captive auxiliary switch ensures secure and reliable connections.
• Simple & Secure Installation: Equipped with user-friendly screw terminals for quick and secure wiring. The size S00 form factor allows for space-saving installation in control panels.
• Durable & Reliable: Built with high-quality materials to withstand harsh industrial environments, ensuring a long service life and minimal maintenance.
• Global Standard Compliance: Meets international standards, including IEC and UL, making it suitable for use in a wide range of global applications.

Function

The Siemens 3RT2017-1BB44-3MA0 power contactor functions as an electrically operated switch. When the 24 V DC control voltage is applied to the coil, it creates a magnetic field that pulls the main contacts together, allowing power to flow to the connected load (e.g., an electric motor).

When the control voltage is removed, the magnetic field collapses, and a spring pushes the contacts apart, interrupting the power flow. The integrated auxiliary contacts operate simultaneously with the main contacts and can be used for feedback, interlocking, or control functions within a larger automation system.

Technical Specification

• Product Number: 3RT2017-1BB44-3MA0
• Rated Current (AC-3e/AC-3): 12 A
• Rated Power (AC-3e/AC-3): 5.5 kW @ 400 V
• Number of Poles: 3-pole
• Control Coil Voltage: 24 V DC
• Auxiliary Contacts: 2 NO + 2 NC
• Terminal Type: Screw terminal
• Size: S00
• Features: Captive auxiliary switch

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