LELK112-39773-60 Circuit Protection

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Circuit Breakers are essential components in electrical systems. They are used to prevent the flow of excessive current, protect equipment from overloads, and directly cut off the electrical power in the event of a power surge. The LELK112-39773-60 Circuit Breaker is a three-pole, thermomagnetic, Ca/Si-rated, dual-function circuit breaker featuring an adjustable trip unit. It is used for low-voltage applications, such as residential, industrial and commercial installations, as well as in busway and panelboard systems.

A basic working principle of the LELK112-39773-60 circuit breaker is as follows: When current passes through the device, it causes heat to be generated in the breaker. In normal operating conditions, this low level of heat does not cause the breaker to trip. However, if the flow of current becomes high enough to exceed the load of the breaker, the increased heat causes a bimetal strip within the breaker to expand. This expansion forces the circuit contacts apart, breaking the connection and thus preventing further electrical flow. Additionally, the device trips magnetically when the current reaches an even higher level due to the electromagnetism built into the system.

The LELK112-39773-60 Circuit Breaker includes an adjustable trip unit, which allows users to customize the breaker’s trip curve according to the system, duty and load characteristics. This allows the unit to provide greater system protection by preventing nuisance trips due to harmonic loads and other currents. The adjustable trip unit also features a thermal/magnetic push-to-test button that can be used to test the breaker’s tripping response under various current load conditions.

The LELK112-39773-60 Circuit Breaker is used in a variety of residential, commercial and industrial applications. It can be used in single or three-phase installations and is suitable for use in applications such as lighting, heating, air conditioning, motor control, as well as in non-directly connected electronic systems, communication systems, and event signaling.

The LELK112-39773-60 Circuit Breaker is a versatile, reliable, and cost-effective solution for a wide range of applications. It features a thermal/magnetic push-to-test button, an adjustable trip unit, and conforms to a variety of international standards, making it an ideal choice for most installations. Its advanced, thermomagnetic technology ensures maximum safety and system protection by providing greater accuracy and faster response times than traditional circuit breakers.

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