UPGF6-30479-20 Circuit Protection

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Circuit breakers play an extremely important role in power systems due to its ability to prevent short-circuits and overloads. The UPGF6-30479-20 is a type of circuit breaker specifically designed for intermediate and low voltage applications. In this article, we will examine the application field and working principle of the UPGF6-30479-20 circuit breaker.

The UPGF6-30479-20 is a miniature air-magnetic circuit breaker designed for use in low voltage and intermediate voltage applications. It has an interrupt rating of 6.9 kA at 690 volts, and is UL approved up to 600 volts. It is suitable for applications such as switches, motors, pumps, generators, transformers, lighting, and cable protection. It can also be used in residential, commercial, and industrial environments.

The UPGF6-30479-20 is a self-protected circuit breaker, meaning that it will trip itself when the amount of current being drawn exceeds its rating. This is accomplished by a thermal-magnetic trip device, which provides both thermal and magnetic protection. When the current draw exceeds the rating of the breaker, the thermal element will detect the increase in temperature and open the breaker, thus disconnecting the power. The magnetic element will detect the increase in current and activate an internal spring, which will open the breaker. This mechanism prevents the circuit from short-circuiting, and avoids damage to the breaker.

When installed correctly, the UPGF6-30479-20 will function as intended. First, the breaker must be properly wired to ensure that the current is not higher than the rated value. Next, the breaker must be mounted securely in its enclosure, with enough space to vent heat. The breaker should also be firmly attached to the load side of the circuit. This will allow the breaker to trip in the event of an overload or short circuit.

Finally, the UPGF6-30479-20 must be tested regularly to ensure that it is functioning properly. This testing should include a visual inspection, as well as a continuity test to ensure proper functioning. If any abnormalities are found, the breaker should be serviced or replaced. Testing should also be done after any power failure or disturbance, as the thermal trip may have been activated.

In conclusion, the UPGF6-30479-20 is a reliable and versatile circuit breaker. It is designed for use in low and intermediate voltage applications, and provides thermal and magnetic protection from short-circuiting and overloads. The breaker must be correctly installed and tested regularly in order to function properly.

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