V18MLA1206NHAUTO Circuit Protection

V18MLA1206NHAUTO varistors, commonly known as MOVs, are discrete electronic components used to provide protection for sensitive electronic equipment against transient over-voltages, such as those caused by lightning. They are designed to limit the peak voltage to a prescribed level. MOVs are most commonly used in surge suppressor, protector and circuit breaker applications.

Working Principle

The MOV works by providing a high impedance path to shunt away the sudden increase in current when an over-voltage occurs. The metal oxide element inside the MOV is constructed from sintered granules of zinc oxide, which is surrounded by an outer layer of electrons. When a surge voltage is applied to the MOV, the excess electrons flow through the granules to the outer layer, creating a low impedance discharge path that can shunt the transient to ground, limiting the peak voltage.

Application Field

MOVs offer a low-cost, reliable solution for over-voltage protection for a wide range of electronic equipment. They are widely used in residential and commercial buildings, in industrial plants, equipment and transportation systems, in medical and telecom installations, and for military applications. MOVs are available in a variety of packages, including PCB-mount, surface-mount, leaded, and SMD. They can also be used in applications where AC or DC power is present. A varistor can also be used in applications where the surge protection is only required during a short time interval.

Conclusion

V18MLA1206NHAUTO varistors, also known as MOVs, are electronic components used to protect sensitive electronic equipment from transient over-voltages. The MOV works by providing a high impedance path to shunt away the sudden increase in current when an over-voltage occurs. MOVs offer a low-cost, reliable solution for over-voltage protection in a wide range of applications, including residential and commercial buildings, industrial plants, equipment and transportation systems, medical and telecom installations, and military applications.