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CAREL pRack Compressor Rack Controller
Intelligent compressor rack management for commercial refrigeration, conventional refrigerants, subcritical CO₂ and transcritical CO₂ booster systems.
Smart Control for Modern Compressor Rack Systems
The CAREL pRack pR300 and pR300T are advanced electronic controllers developed for managing refrigeration compressor racks, condenser fans, operating pressures, alarms and energy-saving functions.
Using CAREL's intelligent control algorithms, configurable inputs and outputs, and integration with supervisory systems, the pRack platform helps refrigeration system designers achieve precise control, flexible configuration and efficient operation.
Whether you are designing a conventional commercial refrigeration rack, a subcritical R744 CO₂ cascade system or a transcritical CO₂ booster system, CAREL offers dedicated controller solutions to suit different system requirements.
Choose the Right pRack Controller
pRack pR300
For conventional refrigeration and subcritical CO₂ systems.
Designed for compressor rack management with integrated control of suction and condenser lines, modulating devices and selected electronic expansion valve applications.
pRack pR300T
For advanced transcritical CO₂ booster systems.
Combines compressor rack control with specialised CO₂ management, including high-pressure valves, flash-gas valves, heat recovery and related safety functions.
Key Features & Benefits
Advanced Compressor Control
Supports multiple compressor technologies and capacity-control strategies, depending on system configuration.
Condenser Fan Management
Fan staging and modulation functions help maintain stable condensing pressure.
Energy Saving Functions
Floating suction and condensing setpoints, heat recovery and other configurable efficiency functions.
Flexible System Configuration
Different controller sizes and I/O configurations for varied rack requirements.
Communication & Supervision
Supports RS485 Fieldbus/BMS communications and system monitoring integrations.
Convenient Commissioning
Configuration wizard, USB functionality and tools for parameter management and software upgrades.
HS Platform – High-Speed Performance
The CAREL pRack HS platform uses upgraded high-speed hardware designed to simplify configuration, reduce waiting time during commissioning and improve controller responsiveness.
*As described by CAREL in comparison with the previous hardware generation.
Dedicated Refrigeration Functions
pR300 – Subcritical CO₂
Supports subcritical CO₂ cascade applications, including coordination between compressor racks and electronic expansion valves used with plate heat exchangers.
pR300T – Transcritical CO₂
Designed for CO₂ booster systems with high-pressure and flash-gas valve control, pressure management, heat recovery and related system functions.
Available Model Range
Select the model family below to view CAREL catalogue part numbers. Codes listed are manufacturer catalogue variants; please confirm current stock and availability before ordering.
pRack pR300 – Traditional & Subcritical CO₂ Models
| Part Number | Description |
|---|---|
| PRK300S3F0 | Small – built-in display |
| PRK300S3FK | Small – external display |
| PRK300S0E0 | Small – no display, 2 SSR |
| PRK300S3E0 | Small – built-in display, 2 SSR |
| PRK300S0F0 | Small – no display |
| PRK300M3F0 | Medium – built-in display |
| PRK300M3FK | Medium – external display |
| PRK300M0E0 | Medium – no display, 2 SSR |
| PRK300M3E0 | Medium – built-in display, 2 SSR |
| PRK300M0F0 | Medium – no display |
| PRK300D3F0 | Medium + twin EVD – built-in display |
| PRK300L3F0 | Large – built-in display |
| PRK300L3FK | Large – external display |
| PRK300L0E0 | Large – no display, 6 SSR |
| PRK300L3E0 | Large – built-in display, 6 SSR |
| PRK300L0F0 | Large – no display |
Additional versions are described in the pR300 user manual. The list above follows the product brochure.
pRack pR300T – Transcritical CO₂ Booster Models
| Part Number | Description |
|---|---|
| PRK30TS3FK | Small – external display |
| PRK30TM3FK | Medium – external display |
| PRK30TM0F0 | Medium – no display |
| PRK30TD3F0 | Medium + twin EVD – built-in display |
| PRK30TD3FK | Medium + twin EVD – external display |
| PRK30TD0F0 | Medium + twin EVD – no display |
| PRK30TD3E0 | Medium + twin EVD – built-in display, 2 SSR |
| PRK30TL3F0 | Large – built-in display |
| PRK30TL3FK | Large – external display |
| PRK30TL0F0 | Large – no display |
Typical Applications
Smarter Compressor Rack Management Starts Here
Looking for CAREL pRack compressor rack controllers in Malaysia? Contact RNA Engineering & Trading Sdn Bhd for product availability, model selection assistance and refrigeration control solutions.
Inquiry - CAREL pRack pR300 & pR300T Compressor Rack Controller
