Siemens 3RT2028-1AH20 Power Contactor, 38A 18.5kW 400V AC-3, 3-Pole 48V AC Coil, Screw Terminal Original Brand New

Overview

The Siemens 3RT2028-1AH20 SIRIUS 3RT2 Power Contactor is a robust and reliable 3-pole switching device, specifically designed for controlling electric motors and other demanding loads up to 18.5 kW / 400 V (AC-3e/AC-3). As a key component of the SIRIUS modular system, it offers a compact design and high contact reliability, making it the ideal choice for modern, high-density control cabinets. This size S0 contactor features a 48 V AC, 50/60 Hz control coil and comes equipped with an integrated 1 Normally Open (NO) + 1 Normally Closed (NC) auxiliary contact set, all connected via secure screw terminals.

Technical Specification

• Product Type: Power Contactor

• Manufacturer: Siemens

• Product Number: 3RT2028-1AH20

• Rated Operational Current (AC-3): 38 A

• Rated Power: 18.5 kW at 400 V

• Poles: 3-Pole

• Coil Voltage: 48 V AC, 50/60 Hz

• Auxiliary Contacts: 1 NO + 1 NC

• Connection Type: Screw Terminal

• Size: S0

• Category: Industrial Automation / Motor Control

Key Benefit

• Reliable Motor Control: Optimized for AC-3 duty, ensuring smooth operation of electric motors.

• Compact Design: Space-saving S0 size for efficient panel integration.

• High Durability: Built to handle demanding industrial environments.

• Easy Wiring: Screw terminal connections allow fast and secure installation.

• Flexible Application: Suitable for a wide range of automation and control systems.

Function & Application

The 3RT2028-1AH20 contactor is ideal for:

• Controlling three-phase motors

• Power distribution systems

• HVAC equipment

• Industrial machinery

• Conveyor systems

• Pumps and compressors

It can be combined with Siemens overload relays to create a complete motor starter setup, ensuring protection and operational efficiency.

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