LELK1-1REC4-27129-959

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Circuit Breakers

The LELK1-1REC4-27129-959 circuit breaker is a type of device used to protect an electrical circuit from damage caused by excess current from an overload or short circuit. It is a safety device that operates to interrupt the flow of current in the circuit when a fault condition arises. The circuit breaker works by detecting when the current flowing through it has exceeded a predetermined level and then opening a gap in the circuit (breaking the circuit) and interrupting the current.

Application Field

Circuit breakers are used in almost every area of electrical systems, from industrial facilities and commercial buildings to aircraft, automobiles and even residential applications. In industrial and commercial applications, circuit breakers are used to protect transformers, motors, generators, and other electrical equipment. In aircraft and automotive applications, they are used to protect critical components from damage due to surges in electricity. And in residential applications, they protect the home from overloads, short circuits and ground faults.

Working Principle

A circuit breaker works on the principle of an electromagnet. When an electrical system gets overloaded and an increased current is flowing through the circuit, a corresponding magnetic force is generated. This activates the circuit breaker, which trips the contactor and opens the circuit. The magnetic force works on a lever and it is this movement that opens and closes the circuit breaker and interrupt the current.

The mechanism inside a circuit breaker consists of a plunger, an armature and a spring, all of which work together to break and restore the circuit. The plunger is forced against the armature and spring from the force generated by the magnetic field. This locks the contacts of the circuit breaker open and, in turn, breaks the circuit.

When the fault current subsides and the magnetic field created by the current drops, the spring pushes the armature back and the armature releases the plunger. The contacts of the circuit breaker now close, restoring normal power flow through the circuit.

Circuit breakers are extremely important for any electrical system, as they protect the circuit from damage and offer a quick response time to prevent further damage. For this reason, it is important to use circuit breakers that offer optimum safety and reliability.

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