Circuit Breaker FAQ

A Circuit Breaker is an automatic electrical switch designed to protect
an electrical circuit from damage caused by overload or short circuit.
It automatically interrupts the flow of electricity when a fault is detected,
preventing overheating or potential fire hazards.

Both Circuit Breakers and fuses provide overcurrent protection,
but they have some key differences:

Resettable: Circuit Breakers can be reset after tripping, while fuses need to be replaced after blowing.
Response Speed: Fuses generally have a faster response time, suitable for applications requiring rapid protection.
Cost: Fuses are usually less expensive initially, but may be more costly over time due to frequent replacements.

When selecting a circuit breaker, consider the following factors:

System Voltage: Ensure the breaker's rated voltage matches the system voltage.

Rated Current: Choose a breaker with a rated current suitable for the circuit's needs.

Short Circuit Capacity: Ensure the breaker can withstand the maximum short circuit current of the circuit.

Application Environment: Select a breaker suitable for the installation environment, such as outdoor or high-temperature conditions.

The lifespan of a circuit breaker depends on its usage frequency, operating environment, and maintenance.
Generally, a high-quality circuit breaker can last many years, with a typical lifespan of 20-30 years under normal operating conditions