219-4-40961-1

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Circuit Breakers

219-4-40961-1 is a circuit breaker, which is an electrical switch that is designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its function is to detect a fault condition and, by interrupting continuity, to immediately discontinue electrical flow. This limits the amount of damage that can occur, often to a system or electrical device.

Application Field

Circuit breakers are used in many applications such as industrial buildings, large power systems, public infrastructure (hospitals, water systems, etc), residential and commercial settings. The size and type of circuit breaker depends on the amount of current needed for the specific application. Most circuit breakers used in homes and commercial settings are made to detect only overloads, while industrial circuit breakers are designed to also detect short circuits or arcing faults.

Working Principle

The working principle of a circuit breaker is generally electromechanical or electronic. An electrical current is passed through the breaker which causes it to open the circuit when it exceeds the rated level. In an electromechanical breaker, this is done by a switch, plunger, or other device that separates the contacts and breaks the circuit. In an electronic breaker, this is done with a tripping circuit that senses an increase in current and cuts the power off.

In both types of breakers, the circuit is usually closed again when the current goes below the threshold and the switch is reset. This can be done manually or automatically, depending on the type of breaker.

Circuit breakers are an incredibly important safety device in our homes and businesses and can save lives and protect property. It is essential that they be maintained and inspected regularly as they are subject to wear and tear over time.

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