Siemens 3MT8400-1AV07 AC-3 Power Contactor 400A, 200kW, 400V, S12 Original Brand New

Overview

The Siemens 3MT8400-1AV07 AC-3 Power Contactor is a robust and reliable solution designed for high-current motor control application and general resistive load. Part of Siemens’ trusted industrial control portfolio, this contactor is engineered for exceptional performance and longevity in demanding environment. With a significant 400A AC-3 current rating and a power handling capacity of 200kW at 400V, the 3MT8400-1AV07 is ideal for heavy-duty industrial machinery, pump control, HVAC systems, and other large-scale electrical installation requiring precise and safe power switching. Its compact Size S12 design belies its powerful capabilities, making it a versatile choice for various industrial setup.

Key Features & Specification

• Product Number: Siemens 3MT8400-1AV07
• Type: AC-3 Contactor
• Current Rating (AC-3): 400 Amperes
• Power Rating: 200 kW (at 400V)
• Operating Voltage: 400 VAC
• Control Voltage: 400 VAC, 50 Hz
• Poles: 3-pole design for three-phase applications
• Auxiliary Contacts: 4 Normally Open (NO) + 4 Normally Closed (NC) for flexible control circuit integration and signaling.
• Size: S12 (Standardized frame size for Siemens contactors)
• Terminals: Screw Terminals, ensuring secure and reliable wiring connections.
• Series: SIRIUS (Though not explicitly in the short description, this is Siemens’ main line of industrial control gear).
• Compliance: Designed to meet relevant international standards (e.g., IEC, EN) for safety and performance.

Benefit

• Exceptional Reliability: Built with Siemens’ renowned engineering quality, ensuring long-term operational stability and reduced downtime. This Siemens 400A contactor is designed for a high number of switching cycles.
• High Performance: Optimized for AC-3 motor control applications, providing efficient and safe switching of induction motors. Its 200kW power rating makes it suitable for large motor load.
• Enhanced Safety: Features like the robust construction and reliable auxiliary contacts contribute to safer operation of electrical system.
• Versatile Integration: The 4NO4NC auxiliary contacts offer extensive possibilities for interlocking, signaling, and control circuit integration.
• Easy Installation & Maintenance: Screw terminals simplify wiring, reducing installation time and facilitating straightforward maintenance. The S12 size contactor fits into standard industrial enclosures.
• Energy Efficiency: Designed to minimize power losses during operation, contributing to overall system efficiency.
• Global Standard Compliance: Adherence to international standards ensures compatibility and acceptance in diverse industrial setting.

Function

The Siemens 3MT8400-1AV07 Contactor primarily functions as an electrically operated switch for a power circuit. Its core function include:

• Motor Starting & Stopping: Efficiently makes and breaks the connection to 3-phase induction motor, rated up to 200kW.
• Load Switching: Controls the flow of high current to various resistive, inductive, or capacitive load.
• Remote Control: Can be remotely operated via its 400VAC 50Hz coil, integrating seamlessly into automated control system.
• Interlocking: The 4NO+4NC auxiliary contacts enable safety interlocking with other control devices, preventing hazardous condition.
• Signaling & Feedback: Provides feedback to control systems about the contactor’s status (open/closed) through its auxiliary contact.
• Overload Protection Integration: Designed for easy integration with thermal overload relay or electronic overload relay to protect motors from overcurrent (overload relay sold separately).

Application

The robust design and high current rating of the Siemens 3MT8400-1AV07 make it suitable for a wide range of demanding industrial application, including:

• Large Industrial Pump
• Heavy-duty Fans and Blower
• Compressor
• Conveyor System
• HVAC and Refrigeration Unit
• Material Handling Equipment
• Manufacturing Machinery
• Power Distribution Board
• Lighting Control for Large Facilities

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