Three Phase Rotary Screw Air Compressors

Three phase rotary screw air compressors deliver continuous-duty compressed air for commercial and industrial facilities with 208-460V three phase power. These units run more efficiently and produce higher CFM per horsepower than single phase equivalents. CompressorPros carries three phase rotary screw models from 5 to 75+ HP. All orders ship free.

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What Are Three Phase Rotary Screw Air Compressors?

A three phase rotary screw air compressor uses a rotary screw airend driven by a 208V, 230V, or 460V three phase motor. Three phase motors draw less amperage per HP than single phase, run cooler, and deliver higher efficiency at scale, making them the standard for commercial shops, manufacturing plants, and industrial facilities. These units are rated for 100% duty cycle and are available from 5 HP to well over 75 HP, covering the full range of mid-size shop to large-plant air demand.

Tank Mount vs. Base Mount

Tank Mount Three Phase Rotary Screw Compressors

Tank mount systems integrate the compressor, motor, and air receiver into a single package. Most three phase tank mount models pair with 120-132 gallon horizontal tanks and are available from 5 to 30 HP. They simplify installation and are well-suited to shops that want a complete air system in one footprint. The Quincy QGS 10 TMD-3 10 HP Three Phase Rotary Screw with Dryer is a popular tank mount choice that includes an integrated refrigerated dryer. The Elgi EN07-125-120T 10 HP Three Phase Rotary Screw 120 Gallon Tank Mount is another strong option at this HP level.

Base Mount Three Phase Rotary Screw Compressors

Base mount units ship as a standalone compressor and motor without a built-in tank, connecting to a separately sized air receiver. This is the standard configuration for systems above 15 HP and for facilities with existing piping and tank infrastructure. Base mount allows flexibility in receiver sizing and placement. The Elgi EG37-150 50 HP Three Phase Base Mount Rotary Screw Air Compressor represents the kind of industrial-grade capacity available in this configuration.

Fixed Speed vs. Variable Speed Drive

Fixed Speed Three Phase Rotary Screw

Fixed speed units run at a constant motor speed whenever operating. When demand drops, the compressor either runs unloaded or cycles off. Fixed speed models cost less upfront and are well-suited to operations with consistent, predictable air demand throughout the shift.

Variable Speed Drive (VSD) Three Phase Rotary Screw

Variable speed and VSD three phase rotary screw compressors adjust motor speed to match real-time air demand, reducing energy consumption by 20-35% in facilities with fluctuating needs. The higher purchase price is often recovered through energy savings within two to three years. VSD is particularly effective for operations that alternate between heavy and light air demand throughout the day.

Types of Three Phase Rotary Screw Air Compressors

3-10 HP Three Phase Rotary Screw

The entry tier for three phase rotary screw ownership. These units deliver up to around 45 CFM and serve auto repair shops, woodworking operations, and light manufacturing. At this HP range, the efficiency advantage of three phase over single phase is noticeable but modest. The ABAC AS-10503TMD-131 10 HP Three Phase Rotary Screw with Dryer is the top revenue producer in this tier.

15-30 HP Three Phase Rotary Screw

The core of the three phase rotary screw range. These units deliver 50-130 CFM and handle multi-bay auto shops, large fabrication facilities, and mid-scale manufacturing. This is where the efficiency and amperage advantages of three phase power become significant. The Schulz SRP-3025-460 25 HP Three Phase Rotary Screw is a compact option in this range.

40-75+ HP Three Phase Rotary Screw

Industrial-grade systems delivering 150-350+ CFM for large manufacturing plants, food processing facilities, and operations running multiple high-demand processes simultaneously. These units are exclusively base mount, require dedicated electrical infrastructure, and are typically paired with large remote air receivers and downstream filtration systems.

Key Specifications

CFM (Cubic Feet per Minute): Three phase rotary screw compressors deliver roughly 20 CFM at 5 HP to 350+ CFM at 75 HP. All are rated for 100% duty cycle. Add up all simultaneous tool and process demands and include a 20-30% buffer.
HP (Horsepower): Available from 5 to 75+ HP. For facilities that need less than 10 HP, single phase rotary screw compressors are an alternative that avoids the three phase power requirement.
Max PSI (Pounds per Square Inch): Most three phase rotary screw units deliver 125 or 150 PSI. Some models offer both pressure ratings as separate configurations.
Voltage/Phase: Available in 208V, 230V, and 460V three phase. Many models accept multiple voltages via a configurable terminal block. Confirm your facility's voltage and available amperage before ordering.
Noise Level (dBA): Enclosed three phase rotary screw compressors typically operate between 62 and 76 dBA, significantly quieter than reciprocating compressors of equivalent output.

Brands Carried

Elgi: EN series (10-15 HP) and EG series (15-75+ HP) covering the full three phase range, known for energy efficiency and extended 4,000-hour maintenance intervals.
Quincy: QGS series three phase rotary screw compressors from 5 to 30 HP, available in tank mount and base mount with optional integrated dryers.
ABAC: Three phase rotary screw systems from 5 to 20 HP with optional dryers and competitive pricing.
Chicago Pneumatic: QRS series three phase rotary screw compressors from 5 to 30 HP in tank mount, base mount, and dryer-integrated configurations.
Schulz: SRP series compact three phase rotary screw units from 15 to 125 HP for industrial applications.
FS Curtis: Ultrapack series three phase rotary screw compressors for space-constrained installations.
Toledo Tools: Newer brand by FS Curtis.

CompressorPros buys direct from the manufacturer and ships right to you, which saves time and money.

FAQ

Why choose three phase over single phase for a rotary screw compressor? Three phase motors draw roughly 50% less amperage per HP than single phase, run cooler, and operate more efficiently. For any rotary screw compressor above 10 HP, three phase is the standard choice. It also opens the door to higher-HP units (20-75+ HP) that are not available in single phase.

What is the most common mistake when buying a three phase rotary screw compressor? Ordering the wrong voltage. Three phase power is available at 208V, 230V, and 460V, and not all compressor models support all three. Verify your facility's exact voltage by checking the nameplate on your electrical panel or having an electrician confirm before placing an order.

Do three phase rotary screw compressors come with dryers? Many models are available both with and without an integrated refrigerated air dryer. Tank mount models with dryers are common in the 5-20 HP range. For larger base mount systems, a standalone dryer is typically paired separately.

How much space does a three phase rotary screw compressor need? Tank mount models in the 10-20 HP range typically require a footprint of roughly 5 x 3 feet. Base mount units from 25 to 75+ HP may need 4 x 5 to 6 x 8 feet. All models require clearance around air intake and exhaust vents for proper cooling.

Can I add a three phase rotary screw to an existing compressed air system? Yes. Base mount units connect to existing piping and receivers. Tank mount models can serve as standalone systems or feed into a larger network. Ensure your total CFM capacity matches your facility's peak demand.

Does CompressorPros offer free shipping on three phase rotary screw compressors? Yes. All orders ship free, direct from the manufacturer, on every unit in this category.

Shop Three Phase Rotary Screw Air Compressors at CompressorPros

CompressorPros carries three phase rotary screw air compressors from 5 to 75+ HP in tank mount and base mount configurations, with fixed speed and variable speed options. For facilities without three phase power, single phase rotary screw models are available from 3 to 20 HP. For noise-sensitive installations, browse the quiet rotary screw selection. All orders ship free, direct from the manufacturer.

If you need help sizing a three phase rotary screw compressor for your facility, call (803) 339-0445 or email info@compressorpros.com.

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Three Phase Rotary Screw Air Compressors

Chicago Pneumatic QRS 30 TM-3 30 HP Rotary Screw Compressor

Chicago Pneumatic QRS 7.5 TM-3 7.5 HP 3 Phase Rotary Screw

Chicago Pneumatic QRSM 20 TM-3 20 HP Rotary 125 psi

Chicago Pneumatic QRSM 20 TM-3 20 HP Rotary Screw Compressor

Elgi EG11-125 15HP 208/230/460 Volt Three Phase Base Mount Rotary Screw Air Compressor - 125 psi

Elgi EG15-100 20HP 208/230/460 Volt Three Phase Base Mount Rotary Screw Air Compressor - 100 psi

Elgi EG15-125 20HP 208/230/460 Volt Three Phase Base Mount Rotary Screw Air Compressor - 125 psi

Elgi EG15-150 20HP 208/230/460 Volt Three Phase Base Mount Rotary Screw Air Compressor - 150 psi

Elgi EG18-100 25HP 208/230/460 Volt Three Phase Base Mount Rotary Screw Air Compressor - 100 psi

Elgi EG18-125 25HP 208/230/460 Volt Three Phase Base Mount Rotary Screw Air Compressor - 125 psi

Elgi EG22-100 30HP 208/230/460 Volt Three Phase Base Mount Rotary Screw Air Compressor - 100 psi

Elgi EG22-125 30HP 208/230/460 Volt Three Phase Base Mount Rotary Screw Air Compressor - 125 psi