07P421-500S3

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Part Status:	Active

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07P421-500S3 Application Field and Working Principle 07P421-500S3 is a product of American OEI Company. It is an industrial magnetic starter specifically designed for high-inrush applications such as motors, pumps, fans, compressors and other equipment. This starter uses a combination of electrical and magnetic elements to perform its function.ApplicationThis special starter is used in several industries, such as aerospace, automotive, medical, and other manufacturing and production sectors. It is ideal for applications requiring high-inrush currents. In addition, it is suitable for indoor and outdoor applications.Working PrincipleThe working principle of the 07P421-500S3 magnetic starter is based on the interaction between the permanent magnets and the electric current. The magnetic starter is comprised of a set of contactors and a key operated switch. The two contactors are connected in series with each other, and the other connection is to the motor’s power supply. The first contactor connects to the power source and applies current to the winding of the motor. When current flows through the winding, the magnetic field produced by the current interacts with the magnetic fields of the permanent magnets in the starter. This interaction forces the contactor points open and allows current to flow through them. This unlocks the key operated switch that allows the user to control the starter.The 07P421-500S3 magnetic starter is designed for applications using either “P1” or “P2” contactors. The contactors feature an adjustable load setting, which can be used to limit the maximum current drawn by the load. This is important for controlling high inrush applications, such as large inductive motors. The contactor is also equipped with a thermal overload protection system, which will activate if the current drawn by the load exceeds the set limit.The starter can also be reversed for reverse contactors, where the contactors will open when the current is flowing in the opposite direction. This is helpful in applications such as pumps, fans, and compressors that require them to be operated in reverse.ConclusionThe 07P421-500S3 magnetic starter is a great choice for applications requiring high inrush and reverse operation. It is an ideal choice for industrial applications where precise control and protection are needed. It is easy to use and maintain, and it is reliable and durable.

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