8340-F120-P1T2-A0H0-4A Circuit Protection

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Circuit breakers are essential components in any electrical power distribution system, with the ability to safely interrupt the flow of electric currents and protect downstream equipment from damage. The 8340-F120-P1T2-A0H0-4A is no exception, and in this article we will discuss its application field and working principle.

Application Field

The 8340-F120-P1T2-A0H0-4A is intended for use in electrical systems operating at 600 VAC or less. It is most commonly used in HVAC and industrial motor control systems. The breaker is specifically designed for the protection of motor installations by preventing overloads and short circuits. This breaker is also suitable for use as a single pole device in residential panel boards, lighting and appliance branch circuits, and mobile home applications.

Working Principle

The 8340-F120-P1T2-A0H0-4A utilizes a thermal-magnetic trip mechanism that combines a thermal element and a magnetic trip element. The thermal element is designed to operate when the current through the circuit is over its rating for an extended period of time. This will cause the device to trip, cutting off the current to the motor and preventing further damage. The magnetic element of the trip mechanism monitors the intensity of currents, and will trip if it senses that the current is too great. This type of breaker also provides the additional safety of short-circuit protection, preventing any sudden and potentially damaging increases in the current.

The 8340-F120-P1T2-A0H0-4A is designed to be reset manually, using a toggle on the side of the device. This resets the thermal element while keeping the magnetic element ready to trip if needed. The reset toggle can also be used to test the performance of the breaker to ensure it is still functioning correctly.

Conclusion

The 8340-F120-P1T2-A0H0-4A is a high-performance, single-pole circuit breaker designed for use in HVAC and industrial motor control systems. Its combination of thermal and magnetic trip elements provides reliable overload and short-circuit protection, while the reset toggle allows for manual testing and resetting of the device. This makes it an ideal choice for applications that require reliable and effective protection for motor installations.

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