IUG11-40318-1 Circuit Protection

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Circuit breakers are essential components of electrical systems and industrial facilities. Their purpose is to protect electrical devices and systems from damage due to overload currents, by disconnecting the power supply when an overload is detected. One of the most common types of circuit breakers is the IUG11-40318-1 model.

The IUG11-40318-1 is a thermal-magnetic type circuit breaker, meaning it has both thermal and magnetic protection. It’s a three-pole device, so it is capable of monitoring three-phase current and power supplies.

Working Principle

The IUG11-40318-1 circuit breaker works on a three-stage principle. First, it monitors the current level using a bimetallic strip. The bimetal strip is an element made of two different metals that expand or contract at different rates. This means that when the current level rises, the strip expands to open the switch contacts and cut off the current flow.

The second stage of the IUG11-40318-1 is an electromagnet that is activated when the current exceeds the preset level. The magnet then provides a magnetic boost to the bimetal, forcing it to open the circuit breaker contacts more quickly. This extra boost ensures that the current is cut off as fast as possible.

The third stage of the IUG11-40318-1 provides protection against very high currents. The circuit breaker has an arc quencher coil mounted on it, which is activated by a relay when the current level exceeds a certain threshold. This coil then quickly reduces the current level and trips the circuit breaker.

Application Field

The IUG11-40318-1 circuit breaker is suitable for applications involving high current and power levels. This makes it well suited for industrial uses such as motor control circuits and transformer protections, as well as residential applications such as high power lighting circuits.

The IUG11-40318-1 is a robust and reliable circuit breaker that meets the most stringent requirements of IEC 60947-2. It is certified for applications up to 6300 A and voltage of 690 V AC, making it a perfect choice for high power applications.

The IUG11-40318-1 also has a wide range of accessories available, such as undervoltage release and remote trip modules, ensuring that the circuit breaker provides all the necessary protection and functionality required for industrial and residential applications.

Conclusion

The IUG11-40318-1 is a reliable and easy to use three-pole thermal-magnetic circuit breaker. Its three-stage working principle ensures fast and accurate protection of high power circuits and systems. It is suitable for both residential and industrial applications and has a wide range of accessories available to meet specific needs.

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