Siemens 3MT8250-1AL27 Contactor AC-3, 250A/132kW, 400V, 4NO4NC, 230 VAC, 50/60 Hz, 3-pole, size S10 Original Brand New

Overview: Siemens 3MT8250-1AL27 High-Capacity Industrial Contactor

The Siemens 3MT8250-1AL27 is an exceptionally powerful AC-3 contactor specifically engineered for the reliable and efficient switching of very large motors and high-current inductive loads in the most demanding industrial environments. This heavy-duty 3-pole contactor, designated size S10, is a critical component for robust power distribution and advanced automation systems. Designed for 400V main circuits, it commands an impressive current rating of 250 Amperes and can manage power up to 132kW, ensuring unparalleled reliability and operational stability for significant industrial machinery. With its formidable construction and precision engineering, the 3MT8250-1AL27 is the definitive choice for new high-power installations and critical infrastructure upgrades, offering superior long-term performance for businesses across Indonesia.

Key Features & Specification

• Model: Siemens 3MT8250-1AL27
• Contactor Type: AC-3 (optimized for making, breaking, and occasional starting of squirrel-cage motors)
• Rated Current: 250 Amperes (A) – for very high-current applications.
• Rated Power: 132 Kilowatts (kW) at 400V – for extremely powerful motor loads.
• Rated Operational Voltage (Main Circuit): 400 Volts (V) AC
• Auxiliary Contacts: 4 Normally Open (NO) + 4 Normally Normally Closed (NC) – providing extensive flexibility for complex control, interlocking, and status indication in sophisticated systems.
• Control Coil Voltage: 230 VAC (50/60 Hz) – a common and versatile control voltage for industrial systems.
• Poles: 3-pole configuration, essential for three-phase motor control.
• Size: S10 (One of the largest industrial sizes, indicating maximum power handling capacity)
• Terminals: Heavy-duty screw terminal connections, ensuring secure and robust wiring for high currents.
• Construction: Manufactured with Siemens’ uncompromising commitment to quality, guaranteeing extreme durability and extended operational life in the harshest industrial environments.

Function & Application

The Siemens 3MT8250-1AL27 Contactor functions as a vital electromagnetic switch, enabling precise remote and automated control over massive electrical circuits. Its core purpose is to safely and efficiently establish or interrupt the flow of power to the largest industrial motors, high-capacity heating elements, and other critical, heavy-duty equipment. The 230 VAC control coil facilitates easy and reliable integration into modern industrial control systems, significantly enhancing operational safety, efficiency, and automation capabilities. The generous provision of 4NO4NC auxiliary contacts is particularly beneficial for complex control schemes requiring extensive feedback and interlocking.

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