UPG66-22252-1 Circuit Protection

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Circuit breakers are a common type of electrical protection device found throughout most electrical systems. They are used to protect both equipment and personnel from damage due to excessive or prolonged current. The UPG66-22252-1 is a circuit breaker that offers some unique features. This article will discuss the application field and working principle of the UPG66-22252-1 circuit breaker.

The UPG66-22252-1 is a thermal-magnetic circuit breaker designed for use in medium voltage power distribution systems. It has a voltage rating of 6,600 volts AC and is capable of 120 amps of continuous current at that voltage. It also has a UL listing for use in temperatures ranging from -20 to 65°C. Additionally, it meets all relevant requirements for use in hazardous locations per UL Classified operations.

The UPG66-22252-1 includes three major components: a case, a thermal-magnetic trip unit, and a trip actuator. The case and trip unit are made from a high-grade epoxy that is extremely durable and resistant to temperature and moisture. The trip unit is designed to monitor the current level in the breaker and trip it if necessary. This is done by using a magnetic trip coil to detect excessive current levels and then tripping the breaker if the level reaches a certain level. The trip actuator is used to physically move the contacts of the breaker, interrupting the current flow.

The working principle of the UPG66-22252-1 is fairly straightforward. When the current flowing through the breaker increases above the set level, the trip unit senses the increased current level and causes the trip actuator to move, thus breaking the circuit. The breaker will then remain open until manually reset. The breaker has a thermal-magnetic trip unit, which means that in addition to the magnetic trip of the coil, the trip unit also takes into account the drop in temperature of the breaker due to increased current levels.

The UPG66-22252-1 can be used in a variety of applications including low voltage power distribution, generator feeders, transfer switch, and heavy-duty industrial equipment. It is also suitable for use in hazardous locations, such as oil rigs, chemical plants, and shipyards. Due to its high current rating, it is also suitable for use with three-phase systems, providing protection against overload and short-circuit faults.

Overall, the UPG66-22252-1 circuit breaker is a high performance device that offers excellent protection from hazardous conditions. It is designed to monitor both the current and temperature of the breaker and trip it when needed, providing reliable protection against damage caused by excessive current levels. Due to its UL Listing, it is suitable for use in many applications, making it an ideal choice for any medium voltage power distribution system.

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