3120-F521-P7T1-W01Q-1A Circuit Protection

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A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and, by interrupting continuity, to immediately discontinue electrical flow. Circuit breakers are usually intended to be operated only once and then manually reset.

3120-F521-P7T1-W01Q-1A is a modern, reliable and efficient circuit breaker suitable for the most demanding power and automation applications. It is a vacuum electronic circuit breaker featuring a robust, corrosion-resistant stainless steel enclosure, a protective cover and an insertable-to-removable top cover. The breaker has a maximum continuous current of 20 A, a peak current of 20 kA, and a short-circuit current rating of 10 kA. The device is designed to provide reliable protection for overload and short-circuit conditions.

The working principle of the 3120-F521-P7T1-W01Q-1A circuit breaker is based on the differential action of two vacuum pressure-breakers. Vacuum pressure-breakers are inversely-connected between two points of the same circuit. When the electrical current on the line side of the breaker is greater than the current on the load side, the vacuum pressure-breakers switch to the disconnect position, thus preventing the over-current from continuing to flow. In the event of a short-circuit situation, the same differential action occurs, but in reverse; the vacuum pressure-breakers rapidly switch to the open position, quickly interrupting the current, preventing excessive damage.

The 3120-F521-P7T1-W01Q-1A circuit breaker is suitable for many applications including industrial and marine use. It can be used in automation, IT and telecommunications installations, power generation, distribution and metering systems, and in switchboards, main panels and protection systems. The unit is also well suited for use in venues where power is supplied for extended periods, such as in theaters, auditoriums and shopping centers. Thanks to its highly reliable operation and easy installation, the 3120-F521-P7T1-W01Q-1A vacuum circuit breaker can improve the performance, safety and reliability of a wide variety of electrical systems.

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