Vacuum Circuit Breaker Parts and FunctionsA vacuum circuit breaker is a type of electrical switch that is used to protect electrical circuits from overcurrents. It is a type of air-break circuit breaker, but instead of using air to extinguish the arc, it uses a vacuum. This makes it a very reliable and efficient type of circuit breaker.
Vacuum circuit breakers are made up of the following parts:*
Poles:The poles are the parts of the circuit breaker that make contact with the circuit conductors. They are made of copper or aluminum and are typically coated with a silver-based material to improve their conductivity. *
Arc chamber:The arc chamber is the part of the circuit breaker that contains the arc. It is made of a ceramic material that is resistant to heat and electricity. *
Vacuum interrupter:The vacuum interrupter is the part of the circuit breaker that extinguishes the arc. It is made of a metal bellows that is filled with a vacuum. When the circuit breaker is opened, the bellows collapse and create a vacuum that extinguishes the arc. *
Springs:The springs are used to open and close the circuit breaker. They are made of a spring steel that is strong and durable. *
Contacts:The contacts are the parts of the circuit breaker that make and break the circuit. They are made of a copper alloy that is resistant to wear and corrosion.
Vacuum circuit breakers work by using the principle of magnetic attraction. When the circuit breaker is closed, the magnetic field of the electromagnet attracts the plunger and closes the contacts. When the circuit breaker is opened, the magnetic field is released and the plunger is pulled back, opening the contacts.
Vacuum circuit breakers are used in a variety of applications, including power distribution, industrial control, and telecommunications. They are a reliable and efficient type of circuit breaker that is well-suited for applications where high reliability and long life are required.
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