Siemens 3MT8400-1AH07 Contactor AC-3 400A/200kW 400V 4NO4NC, 48 VAC, 50 Hz 3-pole, Size S12 Original Brand New

Siemens 3MT8400-1AH07 Contactor: High-Performance 400A AC-3 Industrial Solution

Overview

The Siemens 3MT8400-1AH07 contactor is a high-performance, heavy-duty electrical component designed for demanding industrial applications. As an AC-3 contactor, it is specifically engineered for switching squirrel-cage motors, making it an ideal choice for a wide range of machinery and systems. This robust 400A contactor (rated for 200kW at 400V) ensures reliable and efficient operation even under high electrical loads. Its compact Size S12 design belies its powerful capabilities, making it a versatile solution for various control panel configurations.

Key Features & Benefit

• High Current & Power Rating: With an AC-3 rating of 400A and a power handling capacity of 200kW at 400V, the Siemens 3MT8400-1AH07 is perfectly suited for controlling large industrial motors and heavy-duty resistive loads.
• Versatile Auxiliary Contacts: Equipped with 4 normally open (4NO) and 4 normally closed (4NC) auxiliary contacts, this contactor offers extensive flexibility for control circuit integration, signaling, and interlocking functions.
• Optimal Coil Voltage: The 48 VAC, 50 Hz coil voltage ensures compatibility with standard control systems, providing reliable and consistent activation.
• 3-Pole Design: Its 3-pole configuration is standard for controlling three-phase motors, offering efficient power switching for industrial machinery.
• Robust S12 Size: The Size S12 form factor signifies a powerful and durable contactor built to withstand harsh industrial environments, ensuring long-term performance.
• Secure Screw Terminals: Screw terminals provide a secure and reliable electrical connection, simplifying installation and maintenance while ensuring optimal conductivity and safety.
• Siemens Quality & Reliability: As a Siemens product, the 3MT8400-1AH07 adheres to the highest standards of quality, safety, and performance, guaranteeing dependable operation and longevity.

Function

The Siemens 3MT8400-1AH07 contactor primarily functions as an electrically operated switch for:

• Motor Control: Starting, stopping, and reversing (in conjunction with other contactors) three-phase AC motors in industrial machinery, pumps, conveyors, and HVAC systems.
• Load Switching: Controlling large resistive, inductive, or capacitive loads in industrial processes, heating systems, and lighting circuits.
• Circuit Isolation: Providing a means to safely isolate power to equipment for maintenance or emergency shutdowns.
• Automation Integration: Acting as a crucial component in automated control systems, responding to signals from PLCs, sensors, and other control devices.

Application

The robust design and high current rating of the Siemens 3MT8400-1AH07 make it ideal for a wide array of industrial applications, including:

• Heavy Industrial Machinery
• Large Pump Systems
• Compressors
• Conveyor Systems
• HVAC Systems
• Industrial Ovens and Heating Systems
• Power Distribution Panels
• Mining Equipment
• Manufacturing Plants
• Water Treatment Facilities

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