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520 Alpha Box Body Refrigeration

Hubbard 520 Alpha – Medium Direct Drive Refrigeration System
VCA EMC Approved


520 Alpha refrigeration split systems are designed to provide optimum performance in truck box bodies insulated for fresh or frozen produce transport. These high capacity, bulkhead mounted units are suitable for operation down to -25°C.


  • VCA EMC Certification Approval No. E11-10R-048576
  • High capacity, great efficiency
  • Split Unit
  • Bulkhead mounted
  • Easy to operate in-cab digital controller as standard
  • Single or three-phase electric standby
  • 12 and 24 Volt
  • National Service Coverage


The 520 Alpha is a split system designed to provide optimum performance in medium sized box bodies that are insulated for fresh or frozen produce transport. The system uses environmentally friendly R404A refrigerant and is suitable for temperatures down to -25°C.

The system comprises a condenser with a 20 series 3 fan evaporator, with or without electric standby, a compressor (with mount kit compatible to your vehicle) and in-cab digital controller that is fully programmable and will provide a constant temperature readout. It features automatic defrost but manual defrost can be initiated by push button control.

The refrigeration system is driven using a compressor that is mounted within the engine compartment and belt driven from the vehicle engine crankshaft. When the vehicle’s engine is running and the thermostat calls for cooling, an electro-magnetic clutch on the compressor is engaged enabling the unit to provide refrigeration. A semi-hermetic compressor powers the refrigeration system on mains standby.

Optional accessories include:
A datalogger, 12V and 24V, single and three phase
versions and multi-temperature systems.

These application graphs are intended as a guide only. Should you require any clarification, please contact a Hubbard Application specialist.