The Castair I53CUC1-S is a 5HP three-phase cube pump compressor with a mounted starter, producing 22 CFM at 767 RPM. The cube pump design runs at significantly lower RPM than a conventional reciprocating compressor pump — at 767 RPM, this unit operates more quietly and with less heat buildup than a standard pump spinning at 900-1100 RPM for the same output. Add three-phase motor efficiency and you have a compressor that is easier on your electrical panel and easier on its own components over the long haul. The mounted starter completes the package for a clean three-phase installation.
Note: Full manufacturer specification sheets were not available at time of publication. The 22 CFM @ 767 RPM figure is sourced from the product name data. Contact us to confirm PSI rating, tank size, and voltage before ordering.
Key Features
- 5 HP Three-Phase Motor: Commercial-duty efficiency for sustained shop operation
- Cube Pump Design at 767 RPM: Low pump speed means less heat, less noise, and longer pump life
- 22 CFM Output: Substantial air volume for multi-tool shop environments
- Three-Phase Power: Requires three-phase electrical service
- Mounted Magnetic Starter: Factory-installed overload protection
- Industrial Series Construction: Castair commercial-grade build quality
Technical Specifications
- Horsepower: 5 HP
- Phase: Three-phase (3-phase)
- CFM Output: 22 CFM
- Pump RPM: 767 RPM
- Pump Type: Cube pump
- Starter: Mounted magnetic starter included
- Model: I53CUC1-S
- Voltage: 208V/230V/460V three-phase (confirm supply voltage at order)
- PSI / Tank Size: Contact us for confirmed specifications
Three-Phase Cube Pump: Best of Both
The cube pump's low-RPM design reduces pump wear. Three-phase power reduces motor starting current and heat. Together they produce a compressor that is well-suited to shops where the machine runs hard all day and longevity matters more than the lowest possible purchase price. If your shop has three-phase service available and runs its compressor heavily, the I53CUC1-S is a considered choice over a standard reciprocating unit.
What This Compressor Handles
- Three-phase shops with continuous air demand throughout the shift
- Environments where noise reduction matters — the low-RPM cube pump runs noticeably quieter than standard pumps
- Auto repair, body, fleet, and light industrial on three-phase power
Why Buy From OEM Diagnostic Tools?
We have been in professional shop equipment since 2016 and can compare cube pump and conventional pump options across the Cast Air line. If you are weighing the I53CUC1-S against a standard reciprocating unit, we can help you make the call for your actual shop conditions. Free shipping, full warranty, and pre-sale guidance on every order.
Call for pricing and availability.
Call 866-217-0063 for quick answers and help!
