Disruptor arrays were weapons equipped on Klingon and Romulan starships.

The first encounter of Humans with disruptor arrays was Enterprise NX-01 encountering a Klingon Raptor-class vessel in 2151. (ENT: "Sleeping Dogs")

Three years later, Enterprise encountered a D5-class battle cruiser with a dorsal disruptor array. (ENT: "Divergence")

By 2368, the Federation was aware that Breen ships also carried disruptors. (TNG: "Hero Worship")

Romulan D'deridex-class warbirds carried at least one disruptor array on the forward hull of the ship. (VOY: "Message in a Bottle")