Siemens 3RT7027-1AQ05 Contactor AC-3, 32A, 15kW, 400V, 1NO+1NC, Screw Terminal Original Brand New

Overview

The Siemens 3RT7027-1AQ05 is a robust and reliable contactor designed for demanding industrial applications. It belongs to the SIRIUS 3RT series and is engineered to switch motors and other resistive loads with high precision. This model is a size S0 contator, which is a standardized classification for its compact dimensions, making it suitable for space-saving installations. It is a three-pole device, rated for a current of 32A under AC-3 load conditions and a maximum power of 15kW at 400V.

Key Features & Benefit

• High Performance: Built for AC-3 applications, this contactor is ideal for controlling squirrel-cage motors. Its high switching capacity ensures reliable operation under heavy loads.
• Integrated Auxiliary Contacts: The 1NO+1NC auxiliary contacts provide additional functionality for control circuits, enabling direct feedback on the contactor’s status.
• Versatile Coil Voltage: The AC 380V 50Hz coil voltage makes it compatible with common industrial power systems.
• Easy Installation: Features screw terminals, which allow for secure and straightforward wiring, ensuring a solid connection and reducing installation time.
• Compact Design: As a size S0 device, it is optimized for mounting in tight spaces, such as control panels and cabinets, without compromising performance.
• Durability: Manufactured by Siemens, a leader in industrial automation, this contactor is built to withstand harsh environments and provide a long service life.

Function

A contactor is an electrically controlled switch used for switching a power circuit. The 3RT7027-1AQ05 functions by using an electromagnet to close the main contacts when power is applied to the coil. This action allows electrical current to flow to a connected load, such as an electric motor. The auxiliary contacts (1NO and 1NC) change state in tandem with the main contacts. The Normally Open (NO) contact closes when the contactor is energized, while the Normally Closed (NC) contact opens. This feature is crucial for creating interlocking circuits and signaling the operational status of the equipment.

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