Unlike Kontakt-1, it works equally reliably against both low-velocity and high-velocity missiles, doubling protection against shaped charges and increasing anti-tank guided missile protection by 50 percent. Developed by NII Stali, Relikt uses a completely new composition of explosives to achieve dynamics protection. The Russian Army T-72B3M main battle tank incorporates Relikt. It can be installed on T-72B and T-90 tanks and was adopted in 2006. Relikt is the 3rd generation Russian ERA, and is claimed to be twice as effective as Kontakt-5. Relikt was designed by the Russian army in response to the new developments. Newer KE penetrators like the US M829A3, were "driven by the need to counter KE-effective explosive reactive armor (ERA)". This will significantly reduce the penetrating capabilities of the penetrator, since the penetrating force will be dissipated over a larger volume of armour. A kinetic energy penetrator will also be subjected to powerful sideways forces, which might be large enough to cut the rod into two or more pieces. This will force an incoming kinetic energy penetrator or shaped charge jet to cut through more armour than the thickness of the plating itself, since "new" plating is constantly fed into the penetrating body. The plates are arranged in such a way as to move sideways rapidly when the explosive detonates. Introduced on the T-80U tank in 1985, Kontakt-5 is made up of "bricks" of explosive sandwiched between two metal plates. It is the first type of ERA that is effectively able to defeat modern armour-piercing fin-stabilized discarding sabot (APFSDS) rounds.
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Kontakt-5 is a type of second-generation explosive reactive armour (ERA) originating in the Soviet Union. The advanced Kontakt-5 explosive reactive armour on this Indian Army T-90S is arranged in pairs of plates with a triangular profile