1170-21-20A

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Circuit breakers are essential components of any electrical infrastructure, providing a necessary form of protection against the dangerous consequences of short circuits or overloads. The 1170-21-20A is a type of circuit breaker with specific applications and a distinct working principle.

The 1170-21-20A is an AC circuit breaker, designed for use in a range of residential, commercial and industrial applications. This type of breaker is typically installed in applications where the load is likely to exceed approximately 900A. It is also rated for applications where the voltage will fluctuate between 1000V and 1300V.

The 1170-21-20A is designed with a trip setting of 0.8 seconds, allowing it to quickly detect and interrupt short circuits and overloads. In order to prevent nuisance trips, the 1170-21-20A breaker is also provided with adjustable short-time delay settings of up to 2.8 seconds.

When a short circuit or overload occurs, the 1170-21-20A breaker analyses the current that is flowing through the system and if it reaches a certain threshold, the breaker trips and immediately interrupts the flow of current. In order to enable it to work properly, the breaker must be mounted on a suitable enclosure that is able to provide adequate cooling to ensure that it does not overheat as a result of the increased current load.

The 1170-21-20A can be reset either manually or automatically depending on the specific application. For instance, it can be reset automatically when the current load is reduced to safe levels or manually using the breaker’s reset button. In either case, the reset action must be done with care as the breaker may still be under extreme temperature.

The 1170-21-20A provides reliable protection in a range of applications and is commonly used in residential, commercial and industrial settings. It is designed with a simple yet reliable trip mechanism that allows it to provide effective protection against short circuits and overloads. Furthermore, it is easily adjustable and can be quickly reset when needed.

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