PR21-4-12.5A-XX-V

Circuit breakers are an integral part of any electrical system, as they protect the system from damage due to overcurrent and other potentially hazardous conditions. In particular, the PR21-4-12.5A-XX-V circuit breaker is a type of miniature circuit breaker (MCB) designed to protect electrical circuits from overload and short-circuit damage. As MCBs are smaller than other types of circuit breakers, they are used in situations where physical space is limited or when unnecessary complexity needs to be avoided.

The PR21-4-12.5A-XX-V circuit breaker is designed specifically for applications where space is at a premium and opens quickly when the current exceeds the rated current. This helps to protect the system by ensuring that power is disconnected quickly, thus preventing any potential damage caused by excess current. The circuit breaker also features an integrated overcurrent relays (OCR) to detect overcurrents, and a reset switch that is activated once the current has fallen to a safe level.

The PR21-4-12.5A-XX-V circuit breaker has numerous applications in a variety of industries, including residential and industrial buildings, marine and telecommunications installations, healthcare, and automotive. It is commonly used in applications where there is a risk of high current that needs to be controlled quickly and reliably, such as motors, pumps, and generators. The breaker also works with a variety of different AC and DC circuits, allowing for greater versatility when it comes to circuit protection.

The PR21-4-12.5A-XX-V circuit breaker works on the principle of changing the current path, or ‘tripping’, when the current exceeds the rated current. When an overload or short-circuit is detected, the circuit breaker trips quickly to prevent the overload from damaging the system. Depending on the specific model, the breaker may also incorporate an adjustable current interrupt setting (CIS) to ensure that it trips at the exact current level required. This feature gives the user greater flexibility when it comes to selecting the optimal protection in line with the application and system being protected.

In summary, the PR21-4-12.5A-XX-V circuit breaker is a highly reliable and efficient type of MCB designed for applications where space is limited and fast current protection is required. As mentioned earlier, the breaker can be used in a variety of applications, from residential to industrial, and from automotive to marine. Moreover, its integrated overcurrent protection, adjustable current interrupt setting, and other features make it an ideal choice for providing quick and reliable protection against potentially damaging overcurrents in AC and DC circuits.