229-3-6345-4

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Circuit breakers play a critical role in protecting electrical circuits and ensuring public safety. The 229-3-6345-4 is one such device, designed to sense dangerous surges in current and cutoff power flow if an unsafe current is detected. Understanding the 229-3-6345-4’s application field and working principle can help ensure proper use in protecting circuits.

Application Field

The 229-3-6345-4 is an AC circuit breaker designed for use in ungrounded systems. This type of breaker is normally used in systems ranging in voltage from 208-480V; however, certain models are rated for up to 600V. Regardless of voltage, the 229-3-6345-4 is rated for an overload capacity of 100% to 125% of its full-load amperage. This breaker is especially useful in residential applications where protection from 120/240V circuits is required.

Working Principle

The 229-3-6345-4 uses a mechanical operating mechanism to control electrical current flow. Inside the breaker is a thermal-magnetic trip unit that contains contact points within the device. The contact points are designed to break the circuit when an unsafe current is detected. When current passes through the contact points, an electromagnet is activated and pulls the contact points apart, cutting off the current flow. The breaker has a reset button located on the outside of the device. Once the breaker is reset, the contacts close again, restoring flow to the circuit.

For additional protection, the 229-3-6345-4 features a thermal trip unit. This trip unit is designed to detect excessive heat and shut off the circuit if a dangerous current is detected. The thermal unit can be manually adjusted via a slider on the outside of the breaker. The adjustment range can be anywhere from 1.1 to 10 seconds, depending on the size of the circuit and the type of application.

The 229-3-6345-4 also features an automatic reset function. This feature ensures that the breaker is reset once the current has dropped to a safe level. In addition, this feature also allows the breaker to trip quickly when an unsafe current is detected, reducing the chances of damage to the circuit or equipment.

Conclusion

The 229-3-6345-4 is a type of AC circuit breaker designed for use in ungrounded systems. It is rated for overload up to 125% of its full-load amperage and can be used in a variety of applications ranging from residential to industrial. The breaker uses a thermal-magnetic trip unit to detect current surges and cut off power when an unsafe current is detected. It also features an adjustable thermal trip unit and an automatic reset function to ensure proper protection of circuits and equipment. Understanding the 229-3-6345-4’s application field and working principle can help ensure proper use in protecting circuits.

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