Siemens 3RT1056-6XB46-0LA2 Power Contactor 185A, AC-3, 90kW, 400V, 24-110V DC Original Brand New

Overview

The Siemens 3RT1056-6XB46-0LA2 is a robust, 3-pole SIRIUS power contactor designed for reliable switching of motors and heavy industrial loads. Featuring an electronic drive with a 24 V DC operating voltage, this unit is specifically engineered to meet extended rated conditions and comply with the stringent railroad standard IEC 60077, making it ideal for rolling stock and railway infrastructure applications. It handles high currents up to 185 A (AC-3e/AC-3) and powers motors up to 90 kW at 400 V.

Benefit

• High Power Capacity: Supports up to 185 A and 90 kW for demanding industrial and railway loads.

• Reliable Control: Electronic drive ensures precise operation with PLC input range 24–110 V DC.

• Flexible Connectivity: 3-pole main circuit with 2 NO + 2 NC auxiliary contacts for seamless integration.

• Durable and Compliant: Screw terminal control and extended rated condition certified to IEC 60077 standards.

• Industrial & Railway Ready: Designed specifically for extended conditions in railway and heavy-duty industrial environments.

Function & Features

• Main Circuit: 3-pole, busbar connection

• Control Circuit: Screw terminals, 24 V DC control

• Auxiliary Contacts: 2 Normally Open (NO) + 2 Normally Closed (NC)

• Drive Type: Electronic

• Rated Condition: Extended, suitable for railway applications

• Compliance: IEC 60077

Application

This contactor is the ideal choice for switching:

• High-power motors in heavy industry and manufacturing.
• Railway traction and auxiliary circuits (compliance with IEC 60077).
• Switching resistive and inductive loads (AC-3/AC-3e).
• Applications requiring precise, digitally controlled high-current switching.

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