A device to suppress voltage spikes, sometimes called suppressor or protector. (See Suppressor.)
Components, devices or circuits used to attenuate, suppress or divert excess electrical (surge and transient) energy to ground. The terms arrester, suppressor and protector are used interchangeably except that the term arrester is used herein for components, devices and circuits at the service disconnecting means.
A protective device for limiting surge voltages on equipment by diverting surge current and returning the device to its original status. It is capable of repeating these functions as specified.
A nonlinear device to limit the amplitude of voltage on a power line. The term implies that the device stops overvoltage problems (i.e., lightning). In actuality, voltage clamp levels, response times, and installation determine how much voltage can be removed by the operation of an arrester.
Nonlinear impedance connected between the power conductors to suppress transients larger than a selected voltage, usually used for lightning protection. May be used interchangeably with "suppressor" or "protector" and a variety of other terms that describe transient voltage suppression. Arrestor is more frequently used to describe data line surge suppressors for ethernet, phone, coax or other type of signal protection. See suppressor.
a protective device installed on the primary (high voltage) side of the distribution transformer. It's used to prevent excessive over-voltage surges across the transformer, caused by lightning strikes or live-line switching.
Wire-mesh screen protecting a fuel tank vent from flame propagation or covering an outlet to prevent sparks from escaping a heat or spark-producing source, such as an incinerator or chimney.