JLE-2-31721-1 Circuit Protection

Circuit Breakers are a common electrical safety device that is used to protect electronics and electric motors by preventing overheating or short-circuiting, which can be potentially dangerous. JLE-2-31721-1 is an example of this type of device. It is designed as an overcurrent and short-circuit protection device for medium voltage applications.

This device is applicable to medium voltage AC systems ranging from one to three phase AC circuits. The rated voltage of this device is 690VAC and its rated frequency is 50/60 Hz. It is designed for applications up to 5000A and has a maximum rated short-circuit breaking capacity of 18KA. This type of circuit breaker also has a rated working current of 1000A to 6000A.

The JLE-2-31721-1 is designed with a modular system that allows for easy and quick installation. It also comes with a range of accessories, such as shunt trips, undervoltage trips, voltage transformers and various other accessories, that can be used to provide functionality in the areas of overcurrent, motor protection, and safety shutoff.

This type of circuit breaker is also designed with a manual reset system, which means that it can be manually reset after a power failure or trip. This reset system can also be configured to allow for automatic resetting after the restoration of power.

The device uses an air-break contactor, which is connected to the circuit breaker\'s two main poles. This contactor serves as the switching element that can be opened or closed to allow current flow. The contactor also controls the device’s circuit breakers and their associated functions, allowing for the regulation of currents.

When a circuit is closed, a voltage ramp is created across the main contact poles, which then creates a magnetic field. The magnetic field then causes a metal spring-loaded disc to move. This movement of the disc causes a mechanical energy that is then transferred to the contactor to open the circuit.

When the circuit is open, a voltage ramp is created between the main and contact poles, which causes the magnetic field to increase. The increased magnetic field causes the metal spring-loaded disc to move, which then causes the contactor to close the circuit and restore power. The JLE-2-31721-1 is designed for reliable and safe performance, providing protection and easy installation.