4420.0677 Circuit Protection

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Circuit Breakers

A circuit breaker is a protective device that manages the flow of electricity in a system. This device is designed to open or break a circuit during a fault or overload. The 4420.0677 circuit breaker is one of the most commonly used circuit breakers in many modern systems. This article will discuss the application field and working principle of the 4420.0677 circuit breaker.

Application Field

The 4420.0677 circuit breaker is used in many commercial, residential, and industrial electrical systems. It is used as an overload protector and is known for its reliable performance. It is also used to protect control circuits, lighting circuits, and signal circuits from overloads and short circuits. The 4420.0677 circuit breaker is suitable for direct and alternating currents. It is used to protect AC voltage sources of up to 690V and DC voltage sources of up to 110V.

Working Principle

The 4420.0677 circuit breaker works by interrupting a current flowing through a circuit when it is overloaded or a short circuit occurs. It contains a thermal tripping device, which is triggered when the current through the circuit breaker exceeds the pre-set maximum value. When the thermal tripping device senses this excess current, it will activate the circuit breaker and open the contacts of the circuit, thus breaking the flow of current through the circuit.The 4420.0677 circuit breaker also features a thermal trip curve, which helps prevent the circuit breaker from tripping due to an instantaneous overload. This thermal trip curve ensures that the circuit breaker trips at the appropriate time, and then counts to the tripping time set by the manufacturer. This helps prevent the circuit breaker from tripping too quickly or too late.The 4420.0677 circuit breaker also offers additional safety features such as anti-surge protection, automatic reset, and manual reset. Anti-surge protection prevents the circuit breaker from tripping due to transient voltages. Automatic reset allows the circuit breaker to reset itself after it has tripped due to an overload or short circuit. And manual reset allows the user to manually reset the circuit breaker after it has tripped.

Conclusion

The 4420.0677 circuit breaker is an effective and efficient protective device used for circuit protection in many modern electrical systems. It works by interrupting the current in the circuit when an overload or short circuit is detected. The 4420.0677 circuit breaker is suitable for both direct and alternating currents and is rated for AC voltages of up to 690V and DC voltages of up to 110V. This circuit breaker features a thermal tripping device and a thermal trip curve to ensure the moment of tripping is correct. It also offers additional protective features such as anti-surge protection, automatic reset, and manual reset. In conclusion, the 4420.0677 circuit breaker is an invaluable piece of equipment in electrical systems and is used to protect the system from damage due to overload or short circuit.

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