A gas fire extinguishing device based on solid fuel compositions is an absolute novelty on the fire extinguishing market that has no analogs. It differs from traditional means of gas fire extinguishing by the fact that this device has compact weight and size properties, as well as a complete absence of pressure in the body. The fire extinguishing agent UGP is completely safe and does not harm material assets. After the device is triggered, there are no traces of impact (corrosion, scale, deposits, mechanical clogging, etc.) on the protected equipment and materials. Scope - cabinets with electrical equipment, power plants and substations of compartments with electrical equipment, with electric motors, pumps and other process equipment.