The ZD20CF series manufactured by Teldyne Relays offer a wide array of short-circuit static relay that deliver optical isolation and are designed in a miniature six-pin DIP package. These static relays are capable of connecting loads to the positive as well as the negative output terminals. They function as electronic circuit breakers that spot shorted loads and even overload instances. The relay output opens yet zero current moves through the relay and other related loads. They are capable of preventing over-current destruction to the system.