IELHK211-27794-3

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Circuit breakers are electrical safety switches designed to provide overload protection for electric circuits such as motors, transformers, and air-conditioners. Circuit breakers come in different types and sizes, and IELHK211-27794-3 is one such type. This article will discuss the application field and working principle of IELHK211-27794-3.

Application Field

IELHK211-27794-3 is an industrial-grade circuit breaker designed to meet the needs of electric power systems. It is most commonly used for switchgear, substation control, and medium voltage distribution in power networks. It is also used to provide protection and control in electric motors and generator applications. It is designed to provide reliable protection and a long service life.

Working Principle

The IELHK211-27794-3 circuit breaker is an over-current protective device designed to protect electrical circuits and devices from over-currents caused by an overload or a short circuit. It is triggered when the circuit current exceeds a predetermined threshold, which is set at the time of manufacture. The device can be reset manually after the fault has been cleared and the current has returned to normal level. The circuit breaker is also equipped with trip parameters, such as instantaneous, time-delay, and inverse-time, which determine the device’s response to fault currents.

The IELHK211-27794-3 circuit breaker is a thermal-magnetic device, meaning it utilizes both thermally sensitive elements and electromagnets. When an overload occurs, a bimetallic element inside the device begins to heat up. As the temperature increases, the bimetallic element bends and contacts a terminal, which triggers the trip mechanism and interrupts the circuit. If a short circuit occurs, the magnetic field generated by the current is detected by an electromagnet, which triggers the trip mechanism and interrupts the circuit.

The IELHK211-27794-3 circuit breaker is designed to protect the circuit against both overloads and short circuits by providing reliable protection and a long service life. It is a versatile device suitable for a wide variety of applications and can be used in industrial, commercial, and domestic environments.

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