Siemens 3MT8140-1AN27 Contactor AC-3, 140A/75kW, 400V, 4NO4NC, 220 VAC, 50/60 Hz, 3-pole, size S6 Original Brand New

Overview

The Siemens 3MT8140-1AN27 is a robust and high-performance AC-3 contactor designed for demanding industrial applications. This 3-pole contactor is engineered to handle substantial power loads, making it an ideal choice for controlling AC motors up to 75kW at 400V. Featuring a compact size S6 design and reliable screw terminals, it ensures secure and efficient connections in various electrical systems. With a versatile 220 VAC coil (50/60 Hz) and a comprehensive 4NO+4NC auxiliary contact configuration, the 3MT8140-1AN27 offers exceptional flexibility and control for complex automation tasks.

Function

The primary function of the Siemens 3MT8140-1AN27 contactor is to safely and reliably switch electrical circuits, particularly those powering AC motors. In an AC-3 utilization category, it is specifically designed for switching squirrel-cage motors during normal operation, including making and breaking the motor current while the motor is running. The 220 VAC coil energizes an electromagnet, which in turn closes or opens the main power contacts, thereby controlling the flow of electricity to the connected load. The integrated auxiliary contacts (4 Normally Open, 4 Normally Closed) provide additional signaling and interlocking capabilities for control circuits and automation systems.

Key Features

• High Current Rating: Rated at 140A for AC-3 applications, suitable for heavy-duty motor control.
• Powerful Motor Control: Capable of controlling motors up to 75kW at 400V.
• Versatile Coil Voltage: Operates with a 220 VAC control voltage (50/60 Hz) for broad compatibility.
• 3-Pole Design: Configured for three-phase motor control application.
• Size S6: Compact yet powerful design for efficient panel space utilization.
• Screw Terminals: Ensures secure and reliable electrical connections, facilitating easy installation and maintenance.
• Comprehensive Auxiliary Contacts: Equipped with 4 Normally Open (NO) and 4 Normally Closed (NC) auxiliary contacts for enhanced control and signaling.
• Robust Construction: Built by Siemens for durability and long-term reliability in industrial environment.
• AC-3 Utilization Category: Optimized for switching squirrel-cage motor.

Application

The Siemens 3MT8140-1AN27 contactor is ideally suited for a wide range of industrial application, including:

• Motor control for pumps, fans, compressors, and conveyor.
• Industrial automation system.
• HVAC system.
• Power distribution panel.
• Machine control applications requiring reliable switching of high-power load.

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