Ukraine is supplied with 4C20 elements of the Contact-1 dynamic defense complex for foreign tanks of the Ukrainian Armed Forces. This is stated in: expression Analysts from Ukraine Arms Tracker. Elements of dynamic protection (DZ) are reportedly owned by the Czech company STV Group. These elements protect armored vehicles from enemy cumulative vehicles.

When piercing the DZ cumulative jet element, the explosive in it explodes, and the metal plates of the body of the DZ elements begin to fly in opposite directions. At the same time, they pass the trajectory of the jet and constantly affect it. Some of the jet is spent penetrating these plates, and the lateral thrust from the collision destabilizes the jet.

Due to the effect of DZ, the cumulative properties of armor-piercing properties are reduced. Journalist Volodymyr Buchko said that the tanks that Poland transferred to the Ukrainian Armed Forces received dynamic protection. A photo with the tank of the Polish modification T-72M1R, which already has dynamic protection, was shown, despite the fact that it was sent to Ukraine without it.

It is also stated that foreign tanks were made “Ukrainian” by taking inscriptions written in Ukrainian on the devices. It will be remembered that the Ukrainian tankers mastered the tanks transferred as part of the Polish aid to protect against Russian aggression.

In particular, the T-72M1 and T-72M1R tanks were transferred to the Armed Forces of Ukraine. The modification of the T-72M1R includes the integration of new surveillance systems (including the thermal imaging artillery sight), the installation of new means of communication, the electronic starting system 780-horsepower engine. Source