WVU Tech is located in Montgomery, West Virginia, nestled in the beautiful mountains of Appalachia. The campus is centrally located between Beckley and our capital city of Charleston, providing access to two of West Virginiaâs largest cities and great shopping, nightlife and cultural events. Montgomery is accessible from several major highways including I-64, I-77 and I-79. Directions to WVU Tech.
A contactor is an electrically controlled switch used for switching an electrical power circuit, similar to a relay except with higher current ratings. A contactor is controlled by a circuit which has a much lower power level than the switched circuit.Contactors come in many forms with varying capacities and features.Unlike a circuit breaker, a contactor is not intended to interrupt a short circuit current. Contactors range from those having a breaking current of several amperes to thousands of amperes and 24 V DC to many kilovolts. contactor is controlled by a circuit which has a much lower power level than the switched circuit. Contactors come in many forms with varying capacities and features.
Contactors are useful in commercial and industrial applications, particularly for controlling large lighting loads and motors. One of their hallmarks is reliability. However, like any other device, they are not infallible. In most cases, the contactor does not simply wear out from normal use.Usually, the reason for contactor failure is misapplication. That's why you need to understand the basics of contactors. When someone uses a lighting contactor in a motor application, that's a misapplication.The same is true when someone uses a normal operation motor contactor for motor jogging duty. Contactors have specific designs for specific purposes. When selecting contactors, you'll use one of two common standards: NEMA or IEC.ne of their hallmarks is reliability. However, like any other device, they are not infallible. In most cases, the contactor does not simply wear out from normal use. Usually, the reason for contactor failure is misapplication.