Siemens SIRIUS 3RT2025-1FB44-3MA0 Power Contactor, Size S0, 17A, 7.5kW, 24V DC, 2 NO + 2 NC Aux Contacts Original Brand New

Overview

The Siemens SIRIUS 3RT2025-1FB44-3MA0 is a robust and reliable power contactor designed for the switching of motors and other industrial loads. As part of the SIRIUS modular system, it offers a compact design and seamless integration into control panels. This 3-pole contactor is rated for AC-3e/AC-3 applications up to 17 A and 7.5 kW at 400 V, making it suitable for a wide range of demanding motor control tasks.

Its 24 V DC operating coil, complete with a plugged-in diode combination, ensures reliable and efficient operation. The integrated 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts provide excellent flexibility for complex control and signaling circuits. The captive auxiliary switch design prevents accidental loss of contacts, while the secure screw terminals ensure a quick and durable electrical connection. With its size S0 form factor, it provides a powerful solution in a space-saving design.

Key Benefit

• High Performance: Capable of handling loads up to 17 A and 7.5 kW, suitable for medium-duty motor applications.
• Versatile Control: The 24 V DC coil with a diode combination offers efficient and stable control.
• Enhanced Functionality: Comes with 2 NO and 2 NC auxiliary contacts for versatile control and monitoring circuit integration.
• Reliable Connections: Screw terminals provide a secure and vibration-resistant connection, reducing maintenance needs.
• Space-Saving Design: Its compact size S0 footprint allows for efficient use of panel space.
• Safety & Durability: The captive auxiliary switch design ensures components remain secure during installation and operation.
• Quality Assurance: As a Siemens SIRIUS product, it guarantees high-quality, long-lasting performance and compliance with international standards.

Function

• Motor Switching: Effectively switches and controls the power supply to three-phase motors.
• Load Control: Suitable for switching various resistive, inductive, and capacitive loads.
• Control Circuit Integration: The auxiliary contacts enable the interlocking, signaling, and control of other devices in an automation system.
• Overload Protection (when combined with a thermal overload relay): Forms a complete motor starter for protection against overcurrents.

Technical Specification

• Product Number: 3RT2025-1FB44-3MA0
• Product Type: Power Contactor
• Rated Operational Current (AC-3e/AC-3): 17 A
• Rated Power (AC-3e/AC-3): 7.5 kW at 400 V
• Number of Poles: 3-pole
• Operating Coil Voltage: 24 V DC
• Auxiliary Contacts: 2 NO + 2 NC
• Connection Type: Screw Terminal
• Size: S0
• Features: Plugged-in Diode Combination, Captive Auxiliary Switch

Application

• Motor control and starting
• Industrial machine automation
• HVAC systems
• Pump and fan control
• Conveyor systems
• General industrial electrical circuits

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