4404.0021

Series:	T9-311
Part Status:	Active
Lead Free Status / RoHS Status:	--
Breaker Type:	Thermal
Moisture Sensitivity Level (MSL):	--
Current Rating:	8A
Voltage Rating - AC:	240V
Voltage Rating - DC:	48V
Number of Poles:	1
Actuator Type:	Push to Reset
Illumination:	--
Illumination Voltage (Nominal):	--
Mounting Type:	Panel Mount

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Circuit breakers are vital elements in the electrical distribution industry, providing essential protection against overloading, short circuits, and other potentially damaging phenomena in the electrical system. The 4404.0021 is a type of circuit breaker whose application field and working principle is of particular importance.In terms of application field, the 4404.0021 circuit breaker is designed for use in commercial, industrial and residential applications. The breaker is rated for both single- and three-phase systems, and should be connected with a three-phase voltage system before it can be installed in the electric distribution network. In addition, this breaker can be used to protect against overloads and short circuits in DC systems with voltage levels of up to 480 V.The working principle of this circuit breaker makes use of an electromagnetic force resulting from an overcurrent or short circuit in the electric distribution system. When the current flowing through the circuit exceeds the rated capability of the breaker, the coil within the breaker generates a magnetic field, which acts on the breaker\'s internal trip lever. As the mechanical force of the magnetic field is greater than the force exerted by the trip lever, the lever is tripped and the breaker is opened. This action results in a brief interruption of the system’s power supply, and thereby prevents further damage to the components of the system.Furthermore, the 4404.0021 circuit breaker has other features that make it an effective protection device. It has a thermal-magnetic trip release, which enables the breaker to sense changes in the temperature of the system components and adjust the amount of current that can flow through the breaker. Additionally, this breaker has a shunt trips release, which provides an additional level of protection if the downstream circuits are experiencing a high level of current. Finally, the breaker has a manual override, which enables the user to manually reset the breaker if necessary.In conclusion, the 4404.0021 circuit breaker has numerous features that make it an effective and reliable protection device for commercial, industrial, and residential applications. Its working principle involves the use of an electromagnetic force generated by an overload or short circuit, and its additional features such as thermal-magnetic trip release and shunt trips release ensure additional levels of protection. Additionally, its manual override allows the user to reset the breaker if necessary. Together, these features make this breaker an ideal choice for the electrical distribution industry.

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