STSP-VSD
The STSP VSD Variable Speed Rotary Screw Compressors deliver high-efficiency industrial compressed air from 15 to 600 HP with Variable Frequency Drive technology and a lifetime airend warranty for maximum reliability.
- ✓Power range 15–600 HP with flow 72–2423 CFM and operating pressure 100–218 PSI.
- ✓VSD technology (Variable Frequency Drive) with high-efficiency direct drive and IE3/IE4 motors.
- ✓Controller with intelligent monitoring — ultra-quiet operation ready for Industry 4.0 integration.
- ✓Lifetime warranty on the airend — reliable STSP VSD Variable Speed Rotary Screw Compressors for continuous industrial use.
Description
STSP VSD Variable Speed Rotary Screw Compressors – Intelligent Energy Efficiency for Variable Demand
The STSP-VSD is designed for environments where compressed air consumption fluctuates constantly. Thanks to its variable frequency drive, it adjusts motor speed in real time — eliminating unnecessary load/unload cycles and significantly reducing power consumption.
The direct-drive system maximizes power transmission while minimizing mechanical losses. Additionally, its optimized thermal design ensures stability even under continuous 24/7 operation.
The combination of digital control, premium components, and a robust architecture makes this series an ideal solution for industrial plants looking to reduce operating costs without compromising performance.
Applications
Plants with variable air consumption.
Automated lines and intermittent processes.
Automotive and metalworking industries.
Continuous manufacturing processes.
Centralized compressed air systems.
Facilities focused on energy efficiency.
Advantages
Significant energy savings compared to fixed-speed compressors.
Stable pressure without fluctuations.
Reduced inrush current at startup.
Lower mechanical wear.
Low noise level.
Optimized total cost of ownership.
Remote monitoring and digital connectivity.
Precision Technology for Maximum Reliability
The STSP-VSD Series incorporates high-efficiency IE3 or IE4 motors with Class F insulation. Models up to 40 HP use tri-voltage motors, while units rated 50 HP and above operate at standard 460V.
The cooling system integrates high-performance bar-and-plate heat exchangers, up to 60% more compact than traditional designs, offering excellent heat dissipation and structural strength.
The digital controller includes:
- Integrated phase protection
- Current protection for main motor and fan
- Durable ABS enclosure
- IP65 protection on the front panel
- MODBUS communication
- IoT integration capability (factory-installed or retrofit option)
The system architecture is designed to minimize airflow contamination and maintain long-term thermal efficiency.

Downloads
STSP-VSD Manual
STSP-VSD Catalog














