Siemens 3RT2028-2BG40 SIRIUS 3RV2 Contactor 38A, 18.5kW, 125V DC, Spring-Loaded Terminal, Size S0 Original Brand New

Overview

The Siemens 3RT2028-2BG40 is a high-performance SIRIUS 3RV2 power contactor designed for reliable and efficient switching of electric motors. This 3-pole contactor is rated for AC-3e/AC-3 operation, handling up to 38 A and 18.5 kW at 400 V. Its compact S0 size makes it ideal for space-constrained applications.

The integrated 1 NO + 1 NC auxiliary contacts provide enhanced control and feedback. With its innovative spring-loaded terminals, the 3RT2028-2BG40 ensures a vibration-proof and maintenance-free connection, saving installation time and improving long-term reliability.

Key Features & Benefit

• High Performance: Capable of switching motors up to 18.5 kW (at 400V) and a rated operational current of 38 A, making it suitable for a wide range of industrial applications.
• Reliable and Durable: Part of the trusted Siemens SIRIUS 3RV2 family, known for its robust construction and long service life.
• Space-Saving Design: The compact Size S0 form factor allows for high-density panel layouts, optimizing valuable cabinet space.
• Efficient Power Consumption: Designed for optimal energy efficiency during operation.
• Quick & Easy Installation: The innovative spring-loaded terminals eliminate the need for tools, ensuring a fast, simple, and secure wire connection. This technology provides a permanent, low-resistance connection that is highly resistant to vibration.
• Versatile Control: Operates on a 125 V DC control voltage, offering flexibility in different control system architectures.
• Enhanced Functionality: Comes equipped with built-in 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts for signaling and interlocking purposes.

Function

• Motor Switching: Controls the on/off state of electric motors in industrial machinery, pumps, fans, and conveyor systems.
• Load Switching: Used for switching resistive loads, lighting circuits, and other electrical loads in automation systems.
• System Integration: The auxiliary contacts allow for seamless integration into control circuits for status indication (e.g., motor running), interlocking, and safety functions.
• Energy Management: Facilitates the control of power to machinery, contributing to efficient energy usage.

Technical Specification

• Product Type: Power Contactor
• Product Number: 3RT2028-2BG40
• Manufacturer: Siemens
• Series: SIRIUS 3RV2
• Rated Operational Current (AC-3e/AC-3): 38 A
• Rated Power (AC-3): 18.5 kW at 400 V
• Number of Poles: 3-pole
• Control Supply Voltage: 125 V DC
• Auxiliary Contacts: 1 NO + 1 NC
• Terminal Type: Spring-loaded terminal
• Size: S0

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