219-4-30868-1-V

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Circuit breakers are devices used in electrical systems to prevent short circuits and overloads. They are often used to interrupt the flow of current in order to protect wiring and equipment from damage. The 219-4-30868-1-V circuit breaker is a type of thermal-magnetic breaker that is used to protect distribution systems from overcurrents. This type of breaker is usually employed in higher voltage systems, like those used in commercial, industrial and public applications.

The 219-4-30868-1-V circuit breaker consists of two individual components—a thermal trip unit and a magnetic trip unit. The thermal trip unit is designed to detect and interrupt current if the upper temperature limit of the circuit is reached, due to a high current. The magnetic trip unit detects an increase in current and interrupts it before the thermal unit is activated.

When the current through the breaker exceeds a predetermined value, the magnetic trip unit responds by tripping the breaker. This is accomplished by activating an electromagnet, which causes a trip lever to move and disconnect the contacts. This interrupts the power to the circuit and prevents further overloads or short-circuits.

The thermal trip unit on the 219-4-30868-1-V works differently. It relies on a temperature-sensitive bimetallic strip to sense temperature changes and interrupt the current if necessary. In other words, the thermal trip unit acts as a buffer to protect the circuit from temperature surges due to excessive current flow.

The 219-4-30868-1-V circuit breaker is designed for use in higher voltage distribution systems, such as those found in industrial and commercial applications. It provides a reliable, efficient means of protecting circuits and equipment from damaging current overloads and short circuits. It is also designed to be reset easily after tripping, which reduces downtime and expands maintenance intervals.

In summary, the 219-4-30868-1-V circuit breaker is a thermal-magnetic type device that is designed to protect higher voltage systems from overcurrents. It consists of two independent units—a magnetic trip unit and a thermal trip unit—that work together to provide reliable protection and efficient resetting after tripping. This type of breaker is often used in industrial and commercial applications, such as for the distribution of power to motors, pumps, and other equipment.

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