Siemens 3MT8120-1AG04 Siemens Contactor AC-3, 120A/55kW, 400V, 2NO2NC, 36 VAC, 50 Hz, 3-pole, size S6 Original Brand New

Overview

The Siemens 3MT8120-1AG04 is a robust and high-performance AC-3 contactor, meticulously engineered for demanding industrial applications. Designed to handle significant power loads, this 3-pole contactor is rated for 120 Amperes (A) and 55 kilowatts (kW) at 400 Volts (V), making it ideal for controlling a wide range of motors and resistive loads. Its compact S6 size ensures efficient use of panel space, while the reliable screw terminals facilitate secure and straightforward wiring. Operating with a 36 VAC, 50 Hz control voltage, the 3MT8120-1AG04 provides dependable switching capabilities for critical electrical systems.

Function

The primary function of the Siemens 3MT8120-1AG04 contactor is to provide remote and automatic switching of electrical circuits, particularly for AC motors and other high-current loads. It acts as an electrically controlled switch, allowing for the safe and efficient starting, stopping, and reversing of machinery. The built-in 2 Normally Open (2NO) and 2 Normally Closed (2NC) auxiliary contacts offer versatile control options, enabling the integration of interlocks, signaling, and feedback loops within complex control systems. Its AC-3 utilization category specifically indicates its suitability for switching squirrel-cage motors during normal operation, including starting, switching off running motors, and occasional inching.

Key Features

• High Current & Power Rating: Handles up to 120A and 55kW at 400V, suitable for heavy-duty industrial motors and loads.
• 3-Pole Design: Optimized for three-phase AC applications, ensuring balanced power distribution.
• AC-3 Utilization Category: Specifically designed for switching squirrel-cage motors, providing reliable performance in motor control applications.
• Versatile Auxiliary Contacts: Features 2 Normally Open (NO) and 2 Normally Closed (NC) contacts for enhanced control and signaling capabilities.
• Compact Size S6: Efficiently designed to save valuable panel space without compromising performance.
• 36 VAC, 50 Hz Coil Voltage: Standard control voltage for integration into various industrial control circuits.
• Screw Terminal Connection: Ensures secure and reliable electrical connections, simplifying installation and maintenance.
• Siemens Quality: Manufactured to high standards, offering durability, longevity, and consistent performance in demanding environments.
• Reliable Operation: Engineered for frequent switching operations, providing a long mechanical and electrical life.

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