Siemens 3MT8140-1AQ27 AC-3 Contactor 140A, 75kW, 4NO+4NC, 380V AC Original Brand New

Siemens 3MT8140-1AQ27 AC-3 Contactor – High-Performance Industrial Switching

Overview

The Siemens 3MT8140-1AQ27 is a robust and high-performance 3-pole AC-3 industrial contactor, meticulously engineered for demanding electrical switching applications. Designed as part of Siemens’ renowned S6 size range, this contactor offers exceptional reliability and durability, making it an ideal choice for controlling large industrial motors, resistive loads, and other critical power circuits. With its impressive 140A rated operational current and ability to manage up to 75kW at 400V, the 3MT8140-1AQ27 ensures efficient and safe operation in various industrial environments. Its integrated 4 NO (Normally Open) and 4 NC (Normally Closed) auxiliary contacts provide extensive flexibility for control and signaling circuits, while the convenient screw terminals simplify wiring and installation.

Key Benefit

• Exceptional Power Handling: Rated for 140A (AC-3) and 75kW at 400V, capable of managing heavy inductive loads like motors, ensuring reliable performance in demanding applications.
• Enhanced Control Flexibility: Equipped with 4 Normally Open (NO) and 4 Normally Closed (NC) auxiliary contacts, allowing for intricate control logic, feedback, and interlocking systems.
• Robust & Durable Design (Size S6): Built to withstand rigorous industrial conditions, offering a long operational lifespan and reducing maintenance requirement.
• Easy Installation: Features secure and reliable screw terminal for straightforward wiring, minimizing installation time and effort.
• Global Compatibility: Designed to operate on 380 VAC at 50/60 Hz, ensuring suitability for a wide range of international electrical standard.
• Siemens Quality Assurance: Benefit from Siemens’ reputation for high-quality, reliable electrical components, providing peace of mind and consistent performance.
• Optimized for Motor Control: Specifically designed for AC-3 utilization category, making it perfectly suited for starting, stopping, and reversing squirrel-cage motor.

Function

The Siemens 3MT8140-1AQ27 contactor serves as a crucial electrical switch in power circuits, primarily functioning to:

• Switch Power to Motor: Efficiently makes and breaks the connection to large industrial motors, providing control over their operation.
• Control Resistive Load: Can be used to switch high-power resistive load in various heating or lighting application.
• Isolate Circuit: Provides a means to safely isolate electrical circuits for maintenance or emergency situation.
• Enable Automation: Acts as an interface between control circuit (e.g., PLC, pushbutton) and power circuit, enabling automated operation of machinery.
• Provide Auxiliary Signaling: The 4NO+4NC auxiliary contact offer vital feedback on the contactor’s status (open/closed) to control systems or for interlocking with other devices.

Application

• Industrial Motor Control System
• HVAC System
• Pumping Station
• Conveyor System
• Industrial Machinery
• Lighting Circuit (High Power)
• Heating Element
• Power Distribution Board
• Automation and Process Control

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