Siemens 3MT8205-1AC27 Contactor 205A, 110kW, 4NO+4NC, 24VAC Coil, Size S8 Original Brand New

Overview

The Siemens 3MT8205-1AC27 is a high-performance 3-pole AC-3 contactor, meticulously engineered for efficient and reliable switching of resistive and inductive loads in industrial environments. Part of Siemens’ trusted line of industrial control gear, this contactor is specifically designed to handle high current demands up to 205A and motor power up to 110kW at 400V. Its substantial size S8 frame ensures durability and robust operation, making it an ideal choice for heavy-duty motor control application, including pump, fan, compressor, and conveyor.

Key Features & Specification

• Product Number: Siemens 3MT8205-1AC27
• Type: AC-3 Contactor
• Current Rating (AC-3): 205A
• Motor Power (AC-3): 110kW at 400V
• Main Poles: 3-pole
• Auxiliary Contacts: 4 Normally Open (4 NO) + 4 Normally Closed (4 NC)
• Coil Voltage: 24 VAC (50/60 Hz)
• Frame Size: S8
• Connection Type: Screw Terminal
• Standard: IEC 60947

Benefit

• Reliable Performance: Built by Siemens, a global leader in industrial automation, ensuring consistent and dependable operation even in harsh industrial conditions.
• High Power Handling: Capable of switching large motors up to 110kW, making it suitable for a wide range of heavy industrial machinery.
• Versatile Auxiliary Contacts: The 4NO + 4NC configuration provides ample flexibility for interlocking, signaling, and control circuit integration.
• Global Compatibility: Operates on standard 24VAC 50/60 Hz power, making it suitable for international applications.
• Easy Installation: Features robust screw terminals for secure and straightforward wiring, minimizing installation time.
• Long Operational Life: Designed for millions of mechanical and electrical switching operations, ensuring longevity and reduced maintenance.
• Space-Efficient Design: Despite its high capacity, the S8 size is optimized for efficient use of panel space.

Function

The Siemens 3MT8205-1AC27 contactor serves as a critical component in various electrical control circuits, primarily functioning to:

• Motor Starting and Stopping: Safely switch on and off large three-phase AC motor.
• Load Switching: Control the flow of high current to other inductive or resistive load.
• Remote Control: Enable remote activation and deactivation of machinery when integrated with control system.
• Safety Interlocking: Utilize its auxiliary contacts to create safety interlock, preventing unsafe operation sequences.
• Automation Integration: Act as an interface between control devices (PLCs, pushbutton, sensor) and high-power load.

Application

This Siemens 205A contactor is ideally suited for a broad range of industrial applications requiring robust power switching, including:

• Heavy-duty industrial motor control
• Pumping stations and water treatment facilities
• HVAC systems for large building
• Conveyor systems and material handling
• Compressor control
• Industrial fan control
• Process automation
• Power distribution panel
• Machine tool control

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