MAXIMUM EFFICIENCY. SUPERIOR ENERGY SAVINGS. BUILT FOR AFRICAN ENVIRONMENTS.
PERMANENT MAGNET
VSD COMPRESSORS
Variable Speed Drive intelligence meets African-grade engineering. Up to 35% energy savings, soft start, and 18+ years of proven performance - from 7.5kW to 45kW.
PERMANENT MAGNET VSD RANGE
INTELLIGENT COMPRESSION
SERIOUS SAVINGS
35%
ENERGY SAVINGS VS FIXED SPEED
VSD technology only uses the power your system actually demands
The Supa-Air Permanent Magnet VSD compressor range represents the pinnacle of energy-efficient compression technology. Variable Speed Drive technology automatically adjusts motor speed to match your exact air demand – meaning you only ever use the energy you actually need.
With South African electricty tariffs continuing to rise, the Permanent Magnet VSD range isn’t just the smarter choice, it’s the economically responsible one. Soft start eliminates power spikes and peak demand penalties, while reduced mechanical stress extends service life well beyond conventional fixed-speed alternatives.
35%
ENERGY SAVINGS
WITH VSD TECHNOLOGY
35%
Variable Speed Drive compressors automatically adjust motor speed to match your actual air demand. Unlike fixed-speed units that run at full power regardless of demand, VSD technology means you only consume the energy you actually need.
- Soft start eliminates power spikes and peak demand penalties
- Speed auto-adjusts - matches actual air demand at all times
- Lower electrical and mechanical stress - extended machine lifespan
- Optimised performance across varying production shifts
KEY FEATURES
SMARTER BY
DESIGN.
Every SAPM compressor is built around the Permanent Maget AC air-end platform. Purpose-engineered for variable demand, African conditions, and maximum energy efficiency.
PERMANENT MAGNET MOTOR
The permanent magnet motor delivers higher efficiency that induction motors at all speeds - not just at full load. Maximum efficiency even at partial demand, which is where most compressors spend most of their time.
VARIABLE SPEED DRIVE
Integrated VSD continuously adjusts compressor speed from minimum to maximum to exactly match system air demand. No wasted energy. No unnecessary cycling. Consistent outlet pressure at all times.
SOFT START - NO POWER SPIKES
VSD eliminates the high inrush current of direct-on-line starting. No power spikes, no peak demand penalties on your electricity account, and significantly reduced stress on your electrical installation.
AIR-END
Permanent magnet AC air-end technology - the same proven platform used across the SAPM range. Precision engineering for maximum compression efficiency and extended service intervals.
ELECTRONIC PLC CONTROLLER
Full protection and monitoring: phase faults, overheating, low oil, overload, service reminders, and sensor failure alerts. Real-time display of pressure, running hours, and load status.
BUILT FOR AFRICAN CONDITIONS
Rated to operate in ambient temperatures up to 50°C. Dust-resistant filtration, robust construction, and 18+ years of proven field performance across South African Industries.
TECHNICAL SPECIFICATIONS
All specifications at 7.5 bar working pressure · 380V / 50Hz · Specifications subject to change. Download PDF brochure for latest data.
| 0.7 MPA | 0.8 MPA | 1.0 MPA | 1.3 MPA | Dimensions (mm) | Outlet | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model | HP | kW | m³/min | cfm | m³/min | cfm | m³/min | cfm | m³/min | cfm | L × W × H | Size |
| SAPM-7.5VSD VSD | 10HP | 7.5kW | — | — | 1.2 | 42.40 | 1 | 35.34 | 0.85 | 30.04 | 806×590×949 | G3/4" |
| SAPM-15VSD VSD | 20HP | 15kW | — | — | 2.3 | 81.27 | 2 | 70.67 | 1.7 | 60.07 | 1024×700×1030 | G3/4" |
| SAPM-22VSD VSD | 30HP | 22kW | — | — | 3.6 | 127.21 | 3.2 | 113.07 | 2.8 | 98.78 | 1140×780×1210 | G1" |
| SAPM-37VSD VSD | 50HP | 37kW | — | — | 6.2 | 219.1 | 5.6 | 197.9 | 4.6 | 159.0 | 1264×890×1300 | G1 1/2" |
| SAPM-45VSD VSD | 60HP | 45kW | — | — | 7.3 | 257.0 | 6.7 | 236.0 | 5.8 | 204.0 | 1264×890×1300 | G1 1/2" |
APPLICATIONS
WHERE IT
PERFORMS BEST
WORKSHOPS
Intermittent demand means a fixed-speed unit wastes energy between cycles. VSD idles efficiently and ramps up instantly on demand.
MANUFACTURING PLANTS
Variable demand across shifts makes VSD the ideal choice. Significant energy savings where air demand fluctuates throughout the day.
AUTOMOTIVE INDUSTRY
Consistent pressure for spray booths and assembly tools, with significant energy savings over traditional fixed-speed installations.
FOOD & BEVERAGE
Consistent pressure, quiet operation, and energy efficiency. Pair with Supa-Air air treatment systems for ISO 8573-1 compliant air quality.
MEDICAL INDUSTRY
Quiet VSD operation and consistent pressure delivery for dental surgeries, laboratories, and medical facilities. Specify with full filtration package.
AGRICULTURAL
Reliable, energy-efficient operation for grain handling, irrigation control, and processing facilities with variable demand profiles.
ALSO FROM SUPA-AIR
FIXED-SPEED
FIXED-SPEED SCREW COMPRESSORS
Strong. Reliable. Affordable. Built to Last.
7.5kW to 250kW across 14 models. The proven African workhorse for constant-demand applications.
TWO-STAGE
TWO-STAGE COMPRESSORS
Built for Africa. Engineered for Maximum Efficiency.
55kW to 355kW. Two compression stages with inter-stage cooling. 15-20% more efficient for heavy industrial applications.
AIR
AIR TREATMENT & DRYERS
Clean Air. Every Time.
Refrigerated dryers, 5-stage filtration, and pressure vessels matched to the full range. ISO 8573-1 compliant.