The Castair I533HC1-S is a 5HP three-phase industrial air compressor with a horizontal tank and factory-mounted magnetic starter. If your facility has three-phase electrical service, this is the version to spec over the single-phase I513HC1-S — three-phase motors run at higher efficiency, produce less heat per horsepower, and start more smoothly without the torque surge that single-phase motors generate on startup. The mounted starter handles overload protection; wire to your three-phase panel and you are operational.
Note: Manufacturer specification sheets for this model were not available at time of publication. Contact us for confirmed CFM output, operating PSI, and tank capacity before ordering.
Key Features
- 5 HP Three-Phase Motor: More efficient and smoother-running than single-phase — better for all-day shop use
- Three-Phase Power: Requires three-phase electrical service (208V or 230V/460V — confirm at order)
- Horizontal Tank (HC1): Stable, low-profile footprint for wall or corner installation
- Factory-Mounted Magnetic Starter: Overload protection built in — ready to wire without additional hardware
- Cast Iron Industrial Pump: Commercial-grade pump for long service life and sustained duty cycles
- Industrial Series: Castair commercial tier build quality
Technical Specifications
- Horsepower: 5 HP
- Phase: Three-phase (3-phase)
- Tank Orientation: Horizontal
- Starter: Mounted magnetic starter included
- Model: I533HC1-S
- Series: Industrial
- Voltage: 208V/230V/460V three-phase (confirm supply voltage at order)
- CFM / PSI / Tank Size: Contact us — manufacturer spec sheet not yet available online
Single-Phase vs. Three-Phase: The Real Difference
If your shop has three-phase power, use it. A 5HP three-phase motor pulls significantly less peak current on startup than a single-phase unit, which means less strain on your electrical panel and less voltage sag that affects lights and other equipment on the same circuit. Three-phase motors also run cooler under load, which extends motor life. The only reason to choose the single-phase I513HC1-S over this unit is if you genuinely do not have three-phase service available.
What This Compressor Handles
- Auto repair shops, body shops, and fleet service facilities with three-phase electrical service
- Light manufacturing and industrial facilities
- Any shop environment where three-phase power availability makes this the better choice over single-phase
Why Buy From OEM Diagnostic Tools?
We have been supplying professional shops with Cast Air compressors and shop equipment since 2016. If you are comparing the three-phase and single-phase 5HP horizontal options, we can help you work through the electrical supply question and find the right unit. Free shipping, full manufacturer warranty, and honest pre-sale guidance.
Call for pricing and availability.
Call 866-217-0063 for quick answers and help!
