It automatically resets when the overvoltage goes away, but absorbs much more of the transient energy internally than a similarly rated crowbar device.
en.wikipedia.org These resistors, however, if never subjected to overvoltage nor overheating were remarkably reliable considering the component's size.
en.wikipedia.org For overvoltage protection the whole powerline is equipped with two ground conductors, which are installed on a separate crossbar on the top of the pylons.
en.wikipedia.org It prevents overcharging and may protect against overvoltage, which can reduce battery performance or lifespan, and may pose a safety risk.
en.wikipedia.org Computer power supplies may have short circuit protection, overpower (overload) protection, overvoltage protection, undervoltage protection, overcurrent protection, and over temperature protection.
en.wikipedia.org