Siemens 3TY7403-0AU1 Magnet Coil: 277V AC 60Hz for 3TF, 3TH, 3TB Contactor Original Brand New

Overview

The Siemens 3TY7403-0AU1 is a high-quality replacement magnet coil designed for use in a wide range of Siemens contactors and relays. This specific coil operates on a 277V AC, 60 Hz power supply, ensuring reliable and efficient performance. As a critical component, the magnet coil is responsible for generating the magnetic field that actuates the contactor’s main contacts, allowing for the switching of electrical loads.

The 3TY7403-0AU1 is a versatile and essential spare part for maintaining the functionality and longevity of various Siemens control devices. Its robust construction and precise engineering ensure a perfect fit and seamless operation within the compatible series.

Key Benefit

• Reliable Performance: Engineered to meet Siemens’ high standards, this coil provides consistent and dependable operation, minimizing downtime and ensuring the safety of your electrical systems.
• Exact Fit & Compatibility: Specifically designed for a broad range of Siemens contactors, including the 3TF, 3TH, and 3TB series, ensuring a perfect and hassle-free installation.
• Long-lasting Durability: Built with high-quality materials to withstand the rigors of industrial environments, offering a long service life and reducing the need for frequent replacements.
• Optimal Efficiency: The 277V AC 60Hz rating is a standard for many industrial applications, providing efficient power consumption and stable magnetic force generation.
• Genuine Siemens Part: As a genuine Siemens component, you can trust its quality, reliability, and compatibility with your existing equipment.

Function

The primary function of the Siemens 3TY7403-0AU1 magnet coil is to convert electrical energy into magnetic energy. When the rated voltage of 277V AC is applied, the coil generates a powerful magnetic field that pulls the armature, which in turn closes or opens the main contacts of the following compatible Siemens devices:

• Power Contactors: 3TF30-33, 3TF40-43
• Control Relays: 3TH3, 3TH4, 3TH8
• Vacuum Contactors: 3TB40…44, 3TC44

This action allows for the safe and controlled switching of high-power circuits, making it an indispensable part of motor control centers, industrial machinery, and power distribution systems.

Technical Specification

• Product Number: 3TY7403-0AU1
• Operating Voltage: 277 V AC
• Frequency: 60 Hz
• Compatibility: Siemens contactors 3TF30-33, 3TF40-43, 3TH3, 3TH4, 3TB40…44, 3TC44, 3TH8
• Manufacturer: Siemens
• Type: Magnet Coil / Holding Coil

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