Siemens 3RT1056-2XB46-0LA2 Power Contactor AC-3 185A, 90 kW, 24 V DC Original Brand New

Overview

The Siemens 3RT1056-2XB46-0LA2 power contactor is designed for heavy-duty industrial applications requiring reliable switching and control of AC loads. With an AC-3e/AC-3 rating of 185 A and a power capacity of 90 kW at 400 V, it delivers consistent performance under demanding conditions. Equipped with a 24 V DC PLC input, this contactor ensures seamless integration into automated systems.

Designed for extended rated conditions and compliance with IEC 60077, this contactor is perfect for railways and industrial automation where high reliability and safety are critical. The combination of electronic drive for the main circuit and spring-loaded terminals for control and auxiliary circuits ensures efficient operation and easy installation.

Key Features / Function

• Rated AC-3e / AC-3: 185 A

• Power Capacity: 90 kW / 400 V

• PLC Input Voltage: 24-110 V DC

• 3-pole main circuit with busbar connection

• Auxiliary Contacts: 2 NO + 2 NC

• Drive Type: Electronic

• Control & Auxiliary Circuit: Spring-loaded terminal

• Compliant with IEC 60077 for railroad applications

• Designed for extended rated conditions

Benefit

• High Reliability: Built for demanding industrial and railway environments.

• Efficient Automation Integration: Supports PLC input for smart control.

• Durable Construction: Long service life with minimal maintenance.

• Flexible Installation: Busbar main circuit and spring-loaded terminals for easy wiring.

• Safety Compliant: Meets international IEC 60077 standards.

Application

The Siemens 3RT1056-2XB46-0LA2 is primarily used for switching high-power motors in:

• Railway and Traction Systems: Due to its special IEC 60077 extended rating.
• Industrial Motor Control (DOL, FVNR, etc.)
• High-current resistive and inductive load switching.
• Heavy-duty industrial machinery and plant engineering.

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