LEGH66-37090-10-V Circuit Protection

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Circuit Breakers

A circuit breaker is a device used to protect an electrical circuit from damage caused by an overload or short circuit. Circuit breakers are designed to detect abnormal current conditions, and then open the circuit to stop the flow of electricity. Proper use of circuit breakers can help prevent damage to electronic components, as well as fires caused by electrical faults.

LEGH66-37090-10-V is a widely used circuit breaker in many applications. It consists of two parts: a contact system and an operating mechanism. The contacts are made up of two metal pieces that touch each other when the switch is closed. The operating mechanism of the switch includes a bimetal strip, a trip plate, and a reset magnet. The bimetal strip is made of two metals with different thermal expansion coefficients. When the current passing through the switch exceeds its rated value, the bimetal strip bends and opens the switch.

LEGH66-37090-10-V\'s application field covers the motor soft starter, motor protection starter, information equipment, communication signal equipment, lighting current electrical equipment, fire-fighting system, automatic control system and so on. It helps protect electrical systems from overloads and short circuits. It provides fast-acting protection for overloads and short circuits with its contact system. It is also suitable for applications with large instantaneous current changes, such as arc furnaces and furnace heating.

The working principle of LEGH66-37090-10-V is based on its contact and operating system. When the current reaches the rated value, the bimetal strip heats up and bends due to its difference in thermal expansion. When the bimetal strip bends, it will push the trip plate up, which will then trigger the reset magnet. The reset magnet will pull the contactor open, breaking the circuit and preventing any further current flow. When the current returns to normal, the bimetal strip will cool down and return to its normal position, resetting the breaking system.

In summary, LEGH66-37090-10-V is a widely used circuit breaker in many applications due to its two-piece contact system and operating mechanism. It provides fast-acting protection for overloads and short circuits. Its application field covers a variety of electrical equipment and its working principle involves the bimetal strip, trip plate, and reset magnet.

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