Siemens 3RT2028-1FB40 SIRIUS Power Contactor, 38A, 18.5kW, 24V DC, S0 Size Original Brand New

Overview

The Siemens 3RT2028-1FB40 is a high-performance SIRIUS power contactor designed for demanding industrial applications. This 3-pole contactor, part of the S0 size family, is engineered to handle a rated operational current of up to 38 A for AC-3e/AC-3 applications and a power rating of 18.5 kW at 400 V.

The integrated 24 V DC coil with a plugged-in diode combination ensures reliable and efficient operation, while the included 1 normally open (NO) and 1 normally closed (NC) auxiliary contacts provide flexible control and signaling options. Its robust design and screw terminals make for easy and secure installation, providing a dependable solution for motor control and power switching tasks.

Key Features & Benefit

• High Power Capacity: Rated for 38 A and 18.5 kW, capable of handling significant loads for a wide range of industrial motors.
• Energy Efficient: The 24 V DC coil with a plugged-in diode combination minimizes power consumption and reduces heat generation.
• Built-in Auxiliary Contacts: The 1 NO + 1 NC contacts offer versatile control and feedback capabilities, simplifying circuit design.
• Compact S0 Size: Space-saving design allows for integration into compact control panels without sacrificing performance.
• Reliable Screw Terminals: Provides a strong and secure connection, ensuring long-term operational stability and safety.
• Versatile Application: Ideal for controlling motors, heating systems, and other power switching applications in industrial environments.

Function

• Motor Control: Serves as a primary component for starting, stopping, and reversing three-phase motors.
• Power Switching: Safely and reliably switches power to various electrical loads.
• Load Interruption: Capable of interrupting high currents under fault conditions to protect downstream equipment.
• Signaling: The auxiliary contacts can be used to provide status feedback to PLCs, control circuits, or indicator lights.

Technical Specification

• Product Number: 3RT2028-1FB40
• Product Type: Power Contactor
• Size: S0
• Number of Poles: 3
• Operational Current (AC-3e/AC-3): 38 A
• Operational Power (AC-3e/AC-3): 18.5 kW at 400 V
• Coil Voltage: 24 V DC
• Auxiliary Contacts: 1 NO + 1 NC
• Connection Type: Screw Terminal
• Diode Combination: Plugged-in
• Series: SIRIUS

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