219-3-6391-000

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Part Status:	Active
Lead Free Status / RoHS Status:	--
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Circuit Breakers: 219-3-6391-000 Application Field and Working Principle

A circuit breaker, as the name implies, is a device which interrupts an electrical circuit during an electrical fault. It ensures that the electric current flowing through the circuit does not exceed a certain predetermined threshold in order to safeguard the electrical equipment from potential damage. Invented in the late 1800s, circuit breakers have become a ubiquitous and essential protection device in any modern electrical network.The 219-3-6391-000 circuit breaker is a type of molded-case circuit breaker manufactured by Eaton Corporation. It is a mid- or high-voltage breaker meaning it is designed for use in electric substations and industrial electrical systems. The breaker complies with international standards and is suitable for medium-voltage applications.The design and construction of any circuit breaker depends on the type of fault that needs to be cleared. The major differences between different types of circuit breakers are based on the type of arcs generated by faults. The 219-3-6391-000 is a type of low-temperature, melt-fit-type, vacuum interrupter circuit breaker which is an Arc-vacuum-Pole (AVP) type circuit breaker.In operation, the breaker protects the electrical system by sensing a fault and rapidly closing off the power supply within milliseconds and interrupting the arcing current. The circuit breaker is designed so that, during the operation to clear a fault, the arcing current produces a vacuum in the pole chamber. This vacuum environment extinguishes the arc faster than in air and with lower contact pressure.The circuit breaker features molded insulation to form temperature-stable, arc-resistant insulation. The insulation helps the circuit breaker to withstand extreme temperatures while also preventing arcing. The thermal rating of the device is also designed to match the current-carrying capacity of the circuit breaker.This type of circuit breaker is designed with safety in mind. The 219-3-6391-000 consists of a molded, encapsulated cabin that is designed to resist against the arc-flash effects of a fault while at the same time maintaining high mechanical strength. Additionally, the breaker offers low power dissipation during operation, increasing its efficiency.To conclude, the 219-3-6391-000 is an AVP type low-temperature, melt-fit-type, vacuum interrupter circuit breaker designed to protect against overcurrent events in substations and industrial electrical applications. It is equipped with molded insulation to enhance mechanical strength and safety. Furthermore, it employs a vacuum environment to extinguish any arcs produced by a fault.

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