APGN66-28039-1

Series:	APG
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Breaker Type:	Magnetic (Hydraulic Delay)
Moisture Sensitivity Level (MSL):	--
Current Rating:	--
Number of Poles:	2
Actuator Type:	Toggle
Illumination:	--
Illumination Voltage (Nominal):	--
Mounting Type:	Panel Mount

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Introduction to Circuit Breakers

Circuit breakers are electrical switching devices designed to detect a fault on a circuit and disconnect power to the circuit in a controlled manner. They are used in high-voltage circuits to prevent damage to equipment due to overloading, short circuiting, or other dangerous electrical faults. Circuit breakers are also used in low-voltage circuits to protect people and equipment from electric shock.

APGN66-28039-1 Circuit Breaker

The APGN66-28039-1 is a single pole AC voltage circuit breaker designed for use in residential and commercial applications. It is rated for up to 240 volts, 10 amps and is suitable for AC line voltage applications. It features thermal-magnetic operation which utilizes the combined effects of heat and magnetism to detect the current flow in the circuit. When an overload or short circuit is detected, the circuit breaker will trip, disconnecting power to the circuit. The breaker can then be reset manually to restore power to the circuit.

APGN66-28039-1 Application Field and Working Principle

The APGN66-28039-1 circuit breaker is designed for use in simple residential and commercial applications such as in the distribution cabinet of a home or office. It is also commonly used to protect high-voltage circuits in industrial machinery or heavy-duty appliances such as washing machines and air conditioners. The APGN66-28039-1 circuit breaker utilizes a thermal-magnetic trip principle. This means that when an excessive current in the circuit is detected, the breaker will trip as a result of both the electrical current of the circuit, and the thermal energy resulting from the current flow in the unit. The thermal energy produced when current is flowing through the breaker is detected by a set of bimetallic strips. The thermal energy causes the strips to bend or twist in accordance with the amount of current passing through them. Once the amount of current exceeds the design limit, the bimetallic strips will fully twist and trip the circuit breaker. At the same time, a magnet is used to detect any excessive current caused by short circuiting or other sudden currents. When these occur, the magnetic field will cause the breaker to trip before the bimetallic strips have the chance to fully twist. This dual-sensing method helps to protect the breaker from catastrophic damage or malfunction due to sudden current overloads. When the breaker trips, a plunger is released, breaking the electrical connection between the two poles of the breaker. This interrupts the current flow in the circuit, cutting power to the system. To reset the breaker, the plunger must be pushed back into the holder manually, restoring the electrical connection and allowing power to be restored to the circuit.

Conclusion

Circuit breakers are invaluable devices that are used to protect electrical systems and equipment from damage due to overloading, short circuits, and other electrical faults. The APGN66-28039-1 circuit breaker is a single pole AC voltage circuit breaker designed for use in light residential and commercial applications. It utilizes a thermal-magnetic trip principle that integrates the combined effects of heat and magnetism to detect excessive current in the circuit and trip the circuit breaker. When the breaker trips, power to the circuit is disconnected, and the breaker can then be reset manually to restore power to the circuit.

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