449-K-H-FN-125A Circuit Protection

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Circuit breakers are an important component in any electrical system. They help to ensure that dangerous power surges and faults don\'t cause damage. The 449-K-H-FN-125A is a state-of-the-art thermal-magnetic circuit breaker that is designed for use in a variety of applications.

Applications

The 449-K-H-FN-125A circuit breaker is primarily used in residential, commercial, and industrial applications. This type of breaker is designed to protect against short circuits, overloads, and ground faults. It is suitable for use on 120/240V AC circuits, and can manage up to 30A of current. Its small size makes it ideal for use in panel boxes, junction boxes, and other enclosures. It can be used as a main or branch circuit breaker, and is UL 1053, UL 1054, and UL Listed.

Working Principle

The 449-K-H-FN-125A circuit breaker utilizes both thermal and magnetic elements to provide reliable protection against electrical faults. When current passes through the breaker, the thermal element heats up and causes the breaker to trip when a pre-determined overload is reached. The magnetic element works similarly, but detects and responds to short circuits or instantaneous overloads, trips the breaker faster to help reduce the possibility of further damage.

In the event of a fault, the breaker trips by opening a set of contacts, which interrupts the power supply. This helps to protect the electrical system and components from damage. When the power is restored after the fault has been resolved, the contacts can be manually reset, allowing the breaker to resume normal operation.

Conclusion

The 449-K-H-FN-125A circuit breaker is an ideal solution for many residential, commercial, and industrial applications. Its combination of thermal and magnetic elements helps to ensure reliable protection against short circuits, overloads, and ground faults, while its small size and UL Listed certification make it an ideal choice for use in a variety of enclosures. With its robust construction and reliable performance, the 449-K-H-FN-125A circuit breaker is a great choice for many applications.

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