| System Name | S-300 |
| Manufacturer | Almaz-Antey |
| Country of Origin | Russia |
| Type / Role | Long Range Surface to Air Missile System |
| In Service | Yes |
| Year Introduced | 1978 |
| Unit Cost | USD 300–500 Million per Battery (Estimated) |
| Maximum Engagement Range | 150 km |
| Maximum Engagement Altitude | 27 km |
| Target Types | Aircraft, Cruise Missiles, Ballistic Missiles |
| Interception Probability | High against non-stealth targets |
| Reaction Time | 10–20 seconds |
| Radar Detection Range | Up to 300 km |
| Missile Type | 48N6 Series |
| Missile Length | 7.5 m |
| Missile Weight | 1,800 kg |
| Warhead Type | Fragmentation |
| Warhead Weight | 143 kg |
| Speed | Mach 6+ |
| Radar Type | Phased Array Radar |
| Radar Name | 30N6 Fire Control Radar |
| Detection Range | Up to 300 km |
| Tracking Capacity | 100+ targets |
| Guidance System | Command Guidance with Radar Tracking |
| Fire Control System | Centralized Command Vehicle |
| Launcher Type | Mobile Truck Mounted |
| No. of Missiles per Launcher | 4 |
| Reload Time | 40–60 minutes |
| Mobility Platform | MAZ 8x8 Heavy Truck |
| Crew Required | 4–6 personnel |
| C2 System | Integrated Air Defense Command |
| Connectivity | Secure Military Data Links |
| Network Capability | Yes |
| Operation Mode | Networked or Autonomous |
| Primary Operator | Russia, China, Iran, Ukraine |
| Combat Proven | Limited |
| Conflict History | Syria, Ukraine |
| Notable Feature | Multi target engagement |
The S-300 air defense system is one of the most widely deployed long range surface to air missile systems in the world. Designed during the Cold War and continuously upgraded, it remains a key part of strategic air defense networks across Eastern Europe, Asia, and the Middle East. For U.S. analysts and defense planners, the S-300 is often used as a benchmark system when assessing integrated air defense threats.
Developed by Almaz-Antey of the former Soviet Union, the S-300 entered service in the late 1970s. Its primary mission is to protect critical infrastructure, military bases, and population centers from hostile aircraft, cruise missiles, and limited ballistic missile threats. Multiple variants exist, including the S-300P for air force use and the S-300V for army air defense.
The S-300 uses phased array radar systems capable of tracking dozens of targets simultaneously. It can engage multiple threats at different altitudes and ranges in near real time. Depending on the missile variant, engagement ranges extend up to 150 km, with interception altitudes reaching 27 km. Missile speeds exceed Mach 6, allowing rapid response against fast moving targets.
The system is fully mobile, with launchers, radar units, and command vehicles mounted on heavy trucks. This mobility improves survivability and allows rapid redeployment. The S-300 has been exported to several countries and has seen operational use in conflict zones, primarily as a deterrent rather than a frequently fired system.
The S-300 plays a major role in layered air defense strategies. It is often integrated with shorter range systems and early warning sensors, creating complex engagement zones that challenge modern air forces.
The S 300 defense system is not available for U.S. military purchase due to sanctions and procurement policy. Based on global export data, the estimated cost of a complete S-300 battery ranges from USD 300 million to USD 500 million, depending on configuration and missile loadout.
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