The Castair I15312HC3 is a 15-horsepower, 3-phase industrial air compressor on a 120-gallon horizontal tank with the C3 slow-speed pump at 795 RPM — without the factory-mounted magnetic motor starter. This is the non-starter companion to the I15312HC3-S, delivering the same 50.2 CFM at 175 PSI from the same large-frame C3 pump. The 120-gallon horizontal tank measures 69x24x62 inches and the unit weighs 1,185 lbs.
Starter Requirement
A 15HP 3-phase motor requires a magnetic motor starter with properly rated thermal overload protection. At 230V, a 15HP motor draws approximately 42 amps full load; at 460V, approximately 21 amps. The starter must be rated for your voltage and the motor full-load amperage. If your installation does not include a compatible starter, order the I15312HC3-S instead — it ships with the starter factory-mounted and saves the coordination cost.
Machine Features
- C3 cast iron pump — larger frame than C2, running at 795 RPM for lower operating temperatures and longer pump life.
- 50.2 CFM at 175 PSI — the highest output in the 15HP 3-phase horizontal lineup.
- 120-gallon horizontal ASME tank — 69x24x62 in., powder coated, channel base.
- 1725 RPM industrial 15HP motor — 15% service factor minimum.
- Totally enclosed metal belt guard.
- Copper discharge tube or stainless-steel braided flex line.
- Magnetic starter: NOT included.
Technical Specifications
- Model Number: I15312HC3
- Horsepower: 15 HP
- Phase: 3-phase
- Tank Capacity: 120 gallons, horizontal
- Pump RPM: 795
- CFM @ 0 PSI: 61.7
- CFM @ 175 PSI: 50.2
- Max Pressure: 175 PSI
- Dimensions (LxWxH): 69 x 24 x 62 inches
- Weight: 1,185 lbs
- Motor Speed: 1725 RPM
- Motor Service Factor: 15% minimum
- Tank Certification: ASME
- Magnetic Starter: Not included
- Pump Configuration: C3
Why Buy From Air Compressor Factory Direct?
We have specialized in industrial air compressors since 2016. Call us to confirm starter specifications for your voltage before ordering, or to determine whether the with-starter or without-starter version is the better fit for your installation plan. Free shipping, free pre-sale technical support, full manufacturer warranty.
Call 866-217-0063 for quick answers and help!
