A device that stops or prevents, as a spark arrester that prevents sparks from being released to start fires
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 device that protects hardware, such as systems, subsystems, circuits, and equipment, from voltage or current surges produced by lightning or electromagnetic pulses Note: If the hardware is adequately protected, associated software may also be adequately protected (188) Synonym surge suppressor
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