Arc Splitter In Circuit Breaker

Electric arc produces heat that can melt the contacts of the breaker and even damage the circuit breaker itself.

Arc splitter in circuit breaker.

Types of miniature circuit breakers mcb s. By using a patent pending magnetic flux boosting terminal configuration a strong magnetic field is created. In order to avoid that the arc has to be safely and effectively extinguished. A method used to increase the total arc voltage across the main contacts is to force the arc into an arc baffle or splitter structure.

The thing that you are asking is known as arc chute. Circuit breaker which features a unique and innovative patent pending arc quenching configuration that allows the breaker to safely handle high amperage and high dc voltage applications in a compact package. Air blast circuit breaker may be a single blast or double blast. Acb for example a miniature circuit breaker mcb.

The splitters increase the length of the arc even further. Axial blast air circuit breaker in the air blast circuit breaker the flow of air is longitudinal along the arc. Here is the image of the arc chute. The air blast circuit breakers according to the type of flow of blast of compressed around the contacts are of three types namely axial radial and cross blast.

When the current is greater than 100a these gases get dissociated into atoms which changes the characteristics of the arc on account of the associated change in its thermal conductivity. Hence this arrangement achieves the arc extinction. The arc chute actually lo. An electric arc is the discharge of electric current through gas or air.

A common arc control scheme used in many circuit breaker designs i e. These arc splitter plates are also called arc chutes where arc is formed into a series of arcs and at the same time energy extracted and cools it. An arc fault circuit interrupter or afci breaker prevents fires by sensing when an electrical arc is about to occur and instantly disconnecting the damaged circuit before the arc builds enough heat to catch fire standard circuit breakers don t always trip in these instances because standard breakers are designed to respond to a sustained amount of heat not a quick surge. A typical arc baffle structure in a small circuit breaker is shown in figure 5 9.

The conduction of electric charges through gas produces plasma which glows. Arc chute is used in low voltage circuit breakers or in air circuit breakers i e.