TheSurface to Air System, known by its NATO code name Gragoyle, is designed to protect fixed sites against missile and air attacks. The system uses wheeled transporters for mobility. The system uses the 48H6E2 interceptor missile (also used in the naval RIF-M system) updated with improved guidance algorithms, an improved warhead and enhanced ECCM capabilities. The system can also employ the 48H6E missile to increase its air-defensive capability (the same missile used in the PMU1 SAM system). The system detects targets at ranges of up to 300 km and can handle up to 100 simultaneous tracks. Up to 36 interceptor missiles can engage targets simultaneously. Aircraft targets can be engaged between 3 and 200 km, and missiles can be intercepted at ranges of 5 – 40 km, and from 30 to 90,000 feet altitude.
Thesystem is comprised of the 54K6E2 command post, a 64H62E detection radar, up to six missile carriers (designated 5P85TE2 or 5P85CE2) and an illumination and guidance radar vehicle (30H6E2). Other elements associated with the system include an all altitude detection radar (96L6E), a low altitude detection radar (76H6) and a 40B6M tower for elevating the antenna for improved coverage.
The latest version of the S300 is the PMU3, also known as S400 Triumf.