Siemens 3MT8170-1AQ04 Contactor AC-3, 170A/90kW, 400V, 2NO2NC, 380 VAC, 50 Hz, 3-pole, size S8 Original Brand New

Overview: Siemens 3MT8170-1AQ04 High-Performance Industrial Contactor

The Siemens 3MT8170-1AQ04 is a high-performance AC-3 contactor specifically engineered for the reliable and efficient switching of large motors and high-current inductive loads in demanding industrial environments. This robust 3-pole contactor, designated size S8, is a crucial component for advanced motor control and power distribution systems. Designed for 400V main circuits, it confidently handles currents up to 170 Amperes and power ratings of 90kW, ensuring seamless and stable operation for significant machinery. With its durable construction and precise engineering, the 3MT8170-1AQ04 is an excellent choice for new large-scale installations or critical system upgrades, offering long-term reliability in diverse applications.

Key Features & Specifications

• Model: Siemens 3MT8170-1AQ04
• Contactor Type: AC-3 (optimized for making, breaking, and occasional starting of squirrel-cage motors)
• Rated Current: 170 Amperes (A)
• Rated Power: 90 Kilowatts (kW) at 400V
• Rated Operational Voltage (Main Circuit): 400 Volts (V) AC
• Auxiliary Contacts: 2 Normally Open (NO) + 2 Normally Closed (NC) for extensive control circuit flexibility, enabling complex interlocking and feedback solutions.
• Control Coil Voltage: 380 VAC (50 Hz) – a common and versatile control voltage for industrial systems worldwide.
• Poles: 3-pole configuration for three-phase motor control.
• Size: S8 (Indicates a large, high-capacity industrial contactor)
• Terminals: Robust screw terminal connections for secure, high-current wiring, ensuring maximum reliability.
• Durability: Manufactured by Siemens, guaranteeing exceptional quality, extended service life, and high operational reliability in harsh industrial environments.

Function & Application

The Siemens 3MT8170-1AQ04 Contactor serves as an essential electromagnetic switch, providing remote and automated control over high-power electrical circuits. Its primary function is to safely and efficiently establish or interrupt the flow of electrical current to large industrial motors, substantial resistive loads, and other heavy-duty equipment. The 380 VAC control coil allows for easy and efficient integration into automated control systems, significantly enhancing both operational safety and overall system efficiency.

Common applications where this 170A 400V contactor excels include:

• Controlling large motors in heavy industries such as manufacturing, mining, and processing plants.
• Main power switching for large industrial machinery and equipment.
• High-capacity pumping stations and large conveyor systems.
• Power distribution within industrial facilities and commercial buildings.
• Integration into sophisticated automation lines requiring robust and reliable power switching.

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