Siemens 3RT1055-2XB46-0LA2 Power Contactor 150 A, 75 kW / 400 V, 24 V DC PLC Input Original Brand New

Overview

The Siemens 3RT1055-2XB46-0LA2 is a high-performance power contactor designed for heavy-duty industrial and railway applications. Engineered for reliability and efficiency, this contactor handles AC-3e/AC-3 loads up to 150 A and motors up to 75 kW at 400 V. Its electronic drive ensures fast and precise switching, while auxiliary contacts provide versatile control and signaling options. With spring-loaded terminals and busbar main circuit integration, installation and maintenance are simplified. The device complies with IEC 60077 standards for extended rated conditions in railroad environments.

Key Benefit

• High Power Handling: Supports 150 A and 75 kW / 400 V, suitable for large motors and industrial equipment.

• Flexible Control: PLC input voltage range of 24–110 V DC ensures compatibility with modern automation systems.

• Reliable Operation: Electronic drive with 3-pole configuration guarantees smooth switching and minimal contact wear.

• Extended Rated Condition: IEC 60077 compliance for safe, reliable railway applications.

• Ease of Installation: Busbar main circuit and spring-loaded terminals reduce wiring complexity and downtime.

Functions & Features

• AC-3e/AC-3 rating for industrial motor control

• 3-pole main circuit configuration

• 2 NO + 2 NC auxiliary contacts for control and signaling

• Electronic drive for precise switching

• Busbar-compatible main circuit

• Spring-loaded terminal auxiliary circuit

• PLC input voltage: 24–110 V DC

• Rated for extended conditions in railway applications

• Compliant with IEC 60077

Application

The Siemens 3RT1055-2XB46-0LA2 is ideal for switching and controlling electric motors and drives in:

• Railroad Vehicles & Infrastructure (Traction systems, auxiliary converters)
• Heavy Industrial Machinery
• Automation Systems requiring high current switching
• Motor Control Centers (MCCs)

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