APGH14-683-21

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Circuit breakers are essential pieces of electrical equipment that protect buildings, homes, and the people inside from the dangers of electric shock and circuit overload. The APGH14-683-21 is a specific model of circuit breaker, designed for medium-voltage applications and with a variety of safety features and protections. In this article, we will examine the application field and working principle behind the APGH14-683-21 circuit breaker.

The APGH14-683-21 circuit breaker is specifically designed to safely handle medium-voltage applications, such as industrial motor control, distribution systems, power transmission and telecom systems. It is rated for up to 12.8 kilovolts AC, with a continuous current rating of 800 amps and a cycling capability up to 5KA. It is a vacuum-type circuit breaker, meaning that it uses a vacuum chamber to switch the current on and off.

The APGH14-683-21 is designed to minimize the risk of electric shock by quickly but safely opening and closing the circuit as it is needed. It does this by reacting to overvoltage, undervoltage, overload, short circuit, and phase-balance faults, all without causing disruption to other parts of the circuit. The APGH14-683-21 features a two-step, three-position operating mechanism and an advanced, solid-state trip unit. This combination of features helps to provide the highest level of safety and reliability to the circuits in which it is installed.

To achieve this level of safety, the APGH14-683-21 circuit breaker uses a variety of techniques and components. The operating mechanism, for instance, is made up of a lug-operated switch, a non-trip pushbutton, and a toggle switch. The trip unit is made up of three parts: the thermal-magnetic trip unit, the electronic trip unit, and the relay. The thermal-magnetic trip unit senses short-circuit and overload faults, the electronic trip unit senses phase imbalance faults, and the relay provides an additional layer of protection by sensing any other kind of fault.

All of these elements work together to provide the APGH14-683-21 with a high degree of protection and reliability. The operating mechanism quickly opens and closes the circuit when necessary, and the trip unit monitors the circuit for any kind of fault. When a fault is detected, the APGH14-683-21 will trip itself before any damage can be caused to the circuit and/or the people within it. With its advanced technology and safety features, the APGH14-683-21 provides the highest level of protection for medium-voltage applications.

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