UPGF6-30479-5 Circuit Protection

Circuit breakers provide an effective way of isolating not only current carrying conductors, but also larger and higher voltage systems. UPGF6-30479-5 is a low voltage circuit breaker, which is widely used for industrial safety applications, such as protecting motors and preventing power system shocks caused by short circuits. This article will explain the application field and working principle of this type of circuit breaker.

Application Field of UPGF6-30479-5

UPGF6-30479-5 is a low voltage circuit breaker rated at 3A and rated voltage of 380V AC/DC. This device can be widely applied in industrial control systems for motor protection and short-circuit protection. Furthermore, as a safety device complying with the standards of IEC 60947-2, UPGF6-30479-5 can also be applied in residential lighting, elevators, lifts and other public places, where security is of utmost importance. It offers an effective way to protect people and equipments from the potentially dangerous impacts that can happen due to power surges.

Working Principle of UPGF6-30479-5

UPGF6-30479-5 normally operates in the open circuit state due to the balance force generated by spring and magnetic system. When the current flowing through the circuit reaches a certain threshold, the balance force will be broken, pulling the contactor apart to interrupt the circuit and stop the flow of electricity. At that time, the arcing occurs and it can cause very severe damages to both the device itself and the system it protects. To avoid such a situation, UPGF6-30479-5 is equipped with an arc extinguishing chamber to shield the contactor from the high-temperature arc. After the breaker trips, an overload protection panel will be activated to prevent the current from reaching such a dangerous level again.

As the UPGF6-30479-5 is often used for residential lighting, lifts and elevators, the device is equipped with some auxiliary release and indicator functions as well. The auxiliary release system consists of a thermal release, which can be manually triggered and acts as backup for the electromagnetic action in case of overload, and a shunt release, which can be used to close the breaker before energizing the system. The indicator lights function as a visual indicator of operating status.

Conclusion

UPGF6-30479-5 is a low voltage circuit breaker that is widely used in both industrial and residential applications due to its ease of operation and high safety standards. The main working principle is based on the balance force generated by a spring and a magnetic system; when the current reaches a certain level, the imbalance will cause the contactor to separate, interrupting the electrical circuit. The unit is also equipped with an arc extinguishing chamber and some auxiliary relays to ensure safe operation.