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Circuit Breakers

Circuit breakers are electrical protection devices designed to protect circuits and connected equipment against short-circuits and overloading. They are used to switch circuit elements on and off, unlike fuses that are used to protect against short circuits. APL2-9739-23 is a type of circuit breaker used for low voltage applications.

APL2-9739-23 Application Field

The APL2-9739-23 is designed for use in power systems with voltage of 110/128V AC. It is applicable for both indoor and outdoor applications with a suitable degree of protection. It is designed to be used as an isolate switch, a switch for electrical control and for emergency power shutdown, among other uses. It is suitable for protection in an industrial environment in power supply systems, especially in low voltage power lines.

Working Principle

APL2-9739-23 use an electromagnet to control the circuit breaker mechanism. When a fault current occurs, the increased current causes the trips coil within the device to create a magnetic field. This magnetic field has the effect of causing the tripping mechanism to move to the "open" position. As it moves, it causes the main contacts stored inside the device to be disconnected, thus opening the circuit.

When the fault current has reduced below predetermined levels, the magnetic field collapses, allowing the tripping mechanism to move back into the closed position and complete the circuit. The resetting of the circuit can be achieved either manually or by using an electronic device, providing greater levels of control and energy efficiency.

Conclusion

The APL2-9739-23 circuit breaker is a low voltage circuit breaker designed for protection in an industrial environment in power supply systems. The working principle of the device is based on the use of an electromagnet to control the circuit breaker mechanism. When a fault current occurs, the increased current causes the trips coil within the device to create a magnetic field, which has the effect of causing the tripping mechanism to move to the "open" position.

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