Siemens 3MT8025-1AV03 Contactor AC-3, 25A/11kW, 400V, 1NO1NC, AC 400V, 50Hz, size S0 Original Brand New

Overview

The Siemens 3MT8025-1AV03 Contactor is a high-performance, robust switching device designed for reliable control of electrical loads, particularly in motor control applications. Classified as an AC-3 contactor, it is perfectly suited for starting and stopping squirrel-cage motors and offers exceptional durability for frequent switching operations. With a rated current of 25A and a power handling capacity of 11kW at 400V, this compact Size S0 contactor is an essential component for various industrial and commercial electrical systems. Its integrated 1 normally open (NO) and 1 normally closed (NC) auxiliary contacts provide versatile signaling and interlocking possibilities.

Key Features

• High Performance AC-3 Rating: Specifically designed for switching squirrel-cage motors, ensuring long operational life and reliability.
• Optimal Power Handling: Rated for 25 Amperes and 11 kilowatts at 400 Volts, making it suitable for a wide range of medium-power applications.
• Integrated Auxiliary Contacts (1NO + 1NC): Provides essential feedback and control options for interlocking, status indication, and complex control circuits.
• Versatile Coil Voltage: Operates with an AC 400V, 50Hz control supply voltage, compatible with standard European industrial power grids.
• Compact S0 Size: Space-saving design allows for efficient integration into control panels and enclosures without sacrificing performance.
• Secure Screw Terminals: Ensures robust and reliable electrical connections, simplifying installation and maintenance.
• Durable Siemens Quality: Manufactured to Siemens’ renowned standards, guaranteeing longevity, safety, and consistent performance in demanding industrial environments.
• Easy Installation: Designed for straightforward mounting on DIN rails or with screw fixing.

Function

The Siemens 3MT8025-1AV03 contactor primarily functions as an electrically operated switch. When its 400V AC, 50Hz control coil is energized, the main power contacts close, allowing current to flow to the connected load (e.g., an electric motor). When the coil is de-energized, the main contacts open, interrupting the power supply. The integrated 1NO and 1NC auxiliary contacts change state simultaneously with the main contacts, providing crucial signals for control logic, interlocking mechanisms, and remote indication within a control system. This makes it an indispensable component for automating industrial processes and ensuring safe motor operation.

Application

• Starting and stopping electric motors (e.g., pumps, fans, conveyors, compressors)
• Controlling heating elements
• Switching lighting circuits (industrial and commercial)
• Managing power for various electrical loads in automation systems
• Integration into motor control centers (MCCs)
• HVAC systems
• Machine building and automation
• Panel building

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