IEGHSM111-28908-1-V

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Circuit Breakers

A circuit breaker is an electrical device that protects circuits in the event of an overcurrent or short circuit. The IEGHSM111-28908-1-V is an example of these circuit breakers, with its application field and working principle being some of the unique aspects of this device.

Application Field

The IEGHSM111-28908-1-V is a universal three-position, self-powered, electromechanically operated circuit breaker, meaning it is designed to handle any power system without the need for external power. It is suitable for high overcurrent protection in AC distribution systems up to 690V. Its I²t Characteristic is Type C and allows for an adjustable time/current setting in the range of 2 to 10 In.

In terms of its use, the IEGHSM111-28908-1-V has double insulation, which means it is explosively safe and suitable for use in potentially explosive atmospheres, making it an excellent application in industrial, underground and duct installations with high demands on safety.

Working Principle

The IEGHSM111-28908-1-V circuit breaker is operated by a thyristor armature drive. A thyristor is an electronic device consisting of three layers; Anode, Cathode and Gate. When the gate signal is given, the thyristor will conduct and the armature drive will operate the circuit breaker, either to open or close the main contacts. The internal design of the IEGHSM111-28908-1-V ensures reliable operation and long service life for the device.

The IEGHSM111-28908-1-V also contains an integrated current transformer, so it can be connected directly to a microprocessor-based safety control system. This increases the safety of the circuit, as any kind of misoperation is detected and immediately blocked.

Finally, the IEGHSM111-28908-1-V also features an adjustable voltage drop travel of 40-70 percent, meaning that the circuit breaker can be adjusted for different load conditions. This can also improve safety, as the circuit breaker will be able to detect and interrupt any overload or short-circuit current.

Conclusion

The IEGHSM111-28908-1-V is an excellent example of a circuit breaker designed for industrial and potentially explosive environments, with impressive safety features and an adjustable voltage drop travel. Its wide application field and reliable working principle make it an excellent choice for any power system.

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