Siemens 3RT2028-2BF40 Power Contactor 3-Pole, 38A, 18.5 kW, 110V DC, Auxiliary Contacts Original Brand New

Overview

The Siemens 3RT2028-2BF40 is a high-performance power contactor designed for demanding industrial electrical applications. Engineered for AC-3e/AC-3 operations, it efficiently controls motors up to 18.5 kW at 400 V. Its robust design ensures long-lasting performance, while auxiliary contacts provide flexible control options. Ideal for automation systems, machinery, and motor control centers.

Key Features & Benefits

• High Load Capacity: Supports 38 A, 18.5 kW / 400 V, suitable for medium-duty motors.

• Flexible Control: Includes 1 NO (Normally Open) + 1 NC (Normally Closed) auxiliary contacts for versatile circuit integration.

• Reliable Performance: Spring-loaded terminals ensure secure, vibration-resistant connections.

• Compact Design: Size S0 offers space-efficient installation in control panels.

• Durable & Safe: Designed to meet industrial standards, providing safe and reliable operation in harsh environments.

• Wide Application: Perfect for motor starters, automation systems, and industrial control setups.

Function

The Siemens 3RT2028-2BF40 operates as a three-pole AC contactor for switching and controlling electric motors and other AC loads. The DC coil (110 V) allows precise control, while the auxiliary contacts facilitate signaling and interlocking in complex circuits. It ensures efficient motor protection, reduced downtime, and streamlined industrial operations.

Technical Specifications

• Type: Power Contactor

• Poles: 3

• Current Rating: 38 A

• Power Rating: 18.5 kW / 400 V

• Coil Voltage: 110 V DC

• Auxiliary Contacts: 1 NO + 1 NC

• Terminal Type: Spring-loaded

• Size: S0

• Standards Compliance: AC-3e / AC-3

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