4420.0371

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Circuit breakers are electrical switches designed to protect an electrical circuit from being overloaded by either short circuits or excessive currents. The 4420.0371 is a common type of circuit breaker used in residential and commercial applications, and can be used to provide power protection in anything from small electronic devices to large industrial machinery. This article will discuss the application field and working principle of the 4420.0371 circuit breaker.

The 4420.0371 is a general-purpose air-break circuit breaker. It is designed with a thermal-magnetic trip unit and has a rated current of 100A and a rated voltage of 240V AC. The circuit breaker is equipped with a temperature and overload reset switch to ensure safe operation. In addition, the circuit breaker is UL 489 certified, making it ideal for use in safety critical applications.

The 4420.0371 circuit breaker can be used in a wide range of applications including homes and businesses. In the home, the circuit breaker can be used to protect the wiring from over loading and in the commercial sector, it can be used to protect the wiring from short circuits. In addition, the circuit breaker can be used in electrical vehicles and buses for protection against overloading or short circuits.

The working principle of the 4420.0371 circuit breaker is based on the principle of thermal-magnetic trip action. The breaker consists of a thermal element and a magnetic element. The thermal element is triggered when the current exceeds the rated current, while the magnetic element responds to excessive fault currents, such as those created by short circuits. When the current exceeds the set threshold, the thermal element trips, breaking the circuit and cutting off the power supply. Likewise, when the magnetic element detects a fault current, it trips the breaker to protect the connected equipment.

The 4420.0371 circuit breaker is an effective and reliable choice for providing power protection in both residential and commercial settings. The circuit breaker is UL 489 certified, making it suitable for use in safety critical applications. In addition, the thermal-magnetic trip action ensures reliable protection against overloading and short-circuits. Ultimately, the 4420.0371 circuit breaker is an excellent choice for providing power protection in a variety of applications.

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