Siemens 3RT1055-2AB36 Power Contactor 150A, 75kW, 23-26V AC/DC, Spring-Loaded Terminals Original Brand New

Overview

The Siemens 3RT1055-2AB36 is a high-performance SIRIUS 3RT power contactor designed for demanding industrial applications. This robust 3-pole contactor is engineered to switch motors and other electrical loads with exceptional reliability and efficiency. With a rated operational current of 150 A for AC-3e/AC-3 and a power rating of 75 kW at 400 V, it is perfectly suited for heavy-duty tasks in motor control systems. Its versatile 23-26 V AC/DC control voltage and integrated 2 NO + 2 NC auxiliary contacts provide flexible integration into a wide range of control circuits. The innovative spring-loaded terminals for the control and auxiliary circuits ensure a fast, secure, and vibration-proof connection, while the busbar main circuit connection simplifies installation.

Key Features & Benefit

• High Performance: Handles up to 150 A (AC-3e/AC-3) and 75 kW at 400 V, making it ideal for powerful motor applications.
• Energy Efficiency: The contactor meets the latest AC-3e efficiency standards, helping to reduce energy consumption and operating costs.
• Versatile Control: Operates on a wide-range control voltage of 23-26 V for both AC (50-60 Hz) and DC, offering flexibility in different power systems.
• Integrated Auxiliary Contacts: The built-in 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts simplify wiring for interlocking, signaling, and control functions, saving space and cost.
• Secure & Fast Connection: Spring-loaded terminals for the control and auxiliary circuits ensure a quick, tool-free, and highly reliable connection that resists vibrations.
• Busbar Main Circuit Connection: The main circuit features a busbar connection, allowing for easy and clean integration into existing busbar systems.
• Durable & Reliable: Part of the trusted Siemens SIRIUS 3RT series, known for its long service life, high switching capacity, and operational reliability in harsh industrial environments.
• Space-Saving Design: Its conventional design optimizes space within control cabinets, which is crucial for modern industrial setups.

Function

• Motor Switching: Primarily functions as a robust switch for controlling the start, stop, and direction of three-phase AC motors.
• Load Management: Effectively manages the switching of resistive and inductive loads.
• Control System Integration: Serves as a critical component in motor starters, control panels, and automation systems, providing reliable and safe switching.
• Safety & Interlocking: The integrated auxiliary contacts are used for feedback, status indication, and safety interlocking to prevent simultaneous operation of conflicting loads.

Technical Specification

• Product Type: Power Contactor
• Manufacturer: Siemens
• Product Number: 3RT1055-2AB36
• Rated Operational Current (Ie): 150 A (AC-3e/AC-3 at 400V)
• Rated Power (kW): 75 kW (at 400V)
• Control Supply Voltage (Uc): 23-26 V AC (50-60 Hz) / DC
• Number of Poles: 3-pole
• Auxiliary Contacts: 2 NO + 2 NC
• Main Circuit Connection: Busbar
• Control & Auxiliary Circuit Connection: Spring-loaded terminal
• Drive: Conventional
• Operating Temperature: -25°C to +60°C
• Standards: IEC 60947, VDE 0660, UL, CSA

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