Circuit Breakers

A circuit breaker is a device that permanently stops the flow of electricity when an excessive current is detected. This protection is necessary to prevent damage to both the device and the circuit in which it is used. Circuit breakers are often used to protect components on a circuit board, allowing for an automated response in the event of an excessive current or voltage surge. The 219-3-21637-39 circuit breaker is a type of thermal magnetic circuit breaker, meaning that it uses both thermal elements and magnetic fields to protect against overcurrent situations.

Application Field

The 219-3-21637-39 circuit breaker is used in electronic equipment, particularly in systems needing both thermal and magnetic protection. This type of circuit breaker can be used in both residential and commercial installations, including motor control centers, plugs, and switch boards. It is especially useful for applications where sensitive equipment or devices may be damaged. The circuit breaker can be used to protect such items as refrigeration circuits, air conditioning, and automation controls.

Working Principles

The 219-3-21637-39 circuit breaker uses both thermal elements and magnetic fields to protect against overcurrent. In addition, it has current-limiting protection to further safeguard against an overcurrent situation. The thermal element operates by sensing the temperature of the element itself, and when the temperature rises above a certain threshold, the circuit breaker trips and interrupts the flow of electricity. The magnetic element uses a magnetic field to sense current flow, and when the current exceeds a certain threshold it trips and interrupts the circuit. The current-limiting protection operates by limiting the amount of current that can flow through the circuit breaker, again tripping when the current threshold is exceeded.

Conclusion

The 219-3-21637-39 circuit breaker is a reliable and effective way to protect both sensitive devices and components on a circuit board from current or voltage surges. Its combination of both thermal and magnetic elements, as well as current-limiting protection, make it ideal for applications in residential and commercial settings.