IUGNF66-1-72-.500

Circuit breakers are an essential part of many electrical systems, providing overload protection and short-circuit protection to prevent damage to equipment and platforms. The IUGNF66-1-72-.500 is a type of circuit breaker that is commonly used in residential and commercial applications. This article will discuss the application field and working principle of the IUGNF66-1-72-.500 circuit breaker.

Application Field

The IUGNF66-1-72-.500 is a low-voltage, molded-case circuit breaker (MCB) that is rated for currents up to 72A and voltages up to 500V. It is UL and CSA listed, and is also available in various delay configurations ranging from instantaneous to very long delay. This type of circuit breaker is commonly used in residential and commercial applications to protect circuits from overload and short-circuit currents. It is also suitable for use in applications such as industrial control systems, medical equipment, and motor control circuits.

Working Principle

When the applied current in a protected circuit trips the breaker, the IUGNF66-1-72-.500 circuit breaker contacts open, interrupting the circuit and protecting it against further damage. The contacts in the IUGNF66-1-72-.500 are opened by an electromagnet. When the current in the circuit reaches a predetermined value, usually 0.1-0.4 times the rated current, a magnetic field is generated by a current transformer. The magnetic field then interacts with the electromagnet, causing the contact bars to open. This interrupts the flow of the current, and the breaker shuts off.

Another feature of the IUGNF66-1-72-.500 is that it can be reset manually. When the circuit is tripped, the breaker can be reset by pushing the reset button, which will cause the contacts to close, allowing the circuit to be reactivated. Manual reset is used in applications such as residential electrical installations, where a power outage may be caused by an overload or short circuit.

Conclusion

In conclusion, the IUGNF66-1-72-.500 circuit breaker is a low-voltage MCB used in residential and commercial applications to protect circuits from overload and short-circuit currents. Its contacts open when current in the circuit reaches a predetermined value, interrupting the circuit and protecting it against further damage. The breaker can also be reset manually in cases of power outage. This type of circuit breaker is reliable and easy to use, making it an excellent choice for residential and commercial applications.