Circuit breaker is made up of what case
A circuit breaker is typically made up of the following components:
- Case: The outer housing or enclosure that contains all the internal components. The case is usually made of plastic, metal, or a combination of both.
- Moving contacts: These are the electrical contacts that move within the case to open or close the circuit. They are usually made of a conductive material such as copper or silver.
- Fixed contacts: These are the stationary electrical contacts that the moving contacts engage with to complete or interrupt the circuit.
- Arc chute: This is a chamber within the case that helps to extinguish the arc that forms when the circuit is interrupted. The arc chute is designed to dissipate the energy of the arc and prevent it from reigniting.
- Spring mechanism: This is the mechanism that drives the moving contacts to open or close the circuit. The spring mechanism is usually a coil spring or a leaf spring that is compressed or extended to move the contacts.
- Trip mechanism: This is the mechanism that detects the fault condition (such as overcurrent or overvoltage) and triggers the circuit breaker to trip (open the circuit). The trip mechanism is usually a thermal or magnetic device that responds to the fault condition.
- Operating handle: This is the lever or button that the user operates to trip the circuit breaker or reset it after a fault has been cleared.
These are the main components that make up a typical circuit breaker. The specific design and construction of a circuit breaker can vary depending on the manufacturer and the type of circuit breaker (e.g., miniature, molded case, or industrial).