Ingersoll Rand RSa5.5i-A125 7.5HP Rotary Screw Air Compressor, 28cfm 125psi, 3 Phase, No Tank

Ingersoll Rand RSa5.5i-A125 7.5HP Rotary Screw Air Compressor, 28cfm 125psi, 3 Phase, No Tank

The Ingersoll Rand RSa5.5i-A125 is a 7.5 HP fixed speed rotary screw air compressor rated to produce 28cfm at 125psi. This is a baseplate design that does not include a receiver tank. The compressor operates on 208v, 230v or 460v three phase power. 

Built around Ingersoll Rand’s proven rotary screw platform, the RSa5.5i-A125 delivers strong airflow, dependable operation, and improved efficiency in a compact footprint. The integrated airend reduces internal piping and potential leak points, while the premium efficiency motor and fixed speed load/no-load controls provide a dependable compressed air solution for steady shop air demand. With 28 CFM on the 125 PSI configuration, this compressor is well suited for powering air tools, machinery, workstations, and general plant air systems.

The RSa5.5 7.5hp rotary screw compressor is engineered for long-term reliability and easier service. The compressor package includes an intuitive XS-100 touchscreen controller, automatic start/stop operation, event logging, Modbus communication capability, and sequencing for systems using multiple compressors. Its compact cabinet design, quiet enclosed operation, and service-friendly layout make it easier to install, monitor, and maintain compared to traditional open air compressor packages.

This specific version of the RSa5.5 does not include an air dryer or receiver tank. Separate air dryers and filtration are available for customers who want the compressor package separate from the dryer system. This setup is ideal for users who already have an air tank and downstream air treatment in place. The base mount design (no receiver tank) allows you to install the compressor in a smaller area where traditional receivers would be too large.

The compressor utilizes a tri-voltage 3 phase motor and can be wired 208v, 230v or 460v three phase power. The default wiring is 230v/3phase but this can be pre-wired to your exact voltage prior to shipping.  

XS-110 Controller Information:

• 110mm touchscreen display: Provides a clear, easy-to-use interface for checking compressor status, adjusting settings, and reviewing system information.
• Automatic start/stop control: Helps reduce unnecessary run time by allowing the compressor to shut down when air demand is low.
• Manual and automatic load/unload control: Gives the compressor flexible control over air production to better match system demand.
• Event and operating data monitoring: Helps operators review alarms, warnings, and operating history so issues can be identified faster.
• Integrated system control: Allows the controller to manage compressor package functions from one central interface for simpler operation.
• Sequencing capability for multiple compressors: Helps coordinate multiple compressor systems so units can work together more efficiently.
• Compressor protection logic: Continuously monitors key operating conditions and can take action when abnormal conditions are detected to help reduce downtime.

Features and Benefits: RSa5.5i-A125 7.5HP Rotary Screw Air Compressor

• 7.5 HP / 5.5 kW fixed speed rotary screw air compressor
• Tri-Voltage 208/230/460v 3Phase Main Drive Motor
• 28 CFM rated capacity at 125psi
• Non-TAS base mount design — no integrated refrigerated dryer or receiver tank
• Fully integrated airend designed to reduce leak points and improve efficiency
• Load/no-load control with automatic start/stop
• IP55 Premium efficient main drive motor
• Star-delta starter to help reduce starting current
• XS-100 touchscreen controller with compressor monitoring and protection
• RS-485, Ethernet, USB, and Modbus communication capability
• Event logging for warnings, trips, E-stop events, power-up events, and more
• Sequencing capability for up to 8 compressors
• Air-cooled package designed for continuous operation in demanding shop environments