VC50SDD Solar Direct Drive Refrigerator

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VC50SDD Solar Direct Drive Refrigerator

The VC50SDD is a compact and cost-effective WHO accredited 52.5 litre capacity Solar Direct Drive (SDD) Vaccine Refrigerator. Offering very low total cost of ownership and cost per litre of vaccine storage, it is the perfect choice for a small immunisation facility.

Utilising our optimised solar technology, the VC50SDD offers the perfect balance of array size and autonomy to deliver exceptional reliability whatever the weather. Fully GAVI CCEOP compliant with the highest level of Grade A Freeze Protection and a +5C to +43C extended temperature operating range.

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Features & Benefits

  • 50 litre vaccine storage capacity with extremely stable +2°C to +8°C internal temperature
  • +5°C to +43°C extended ambient operating temperature range
  • Works at WHO solar reference period 3.5kWh/m2 /24h
  • 74hr 15min autonomy at +43°C
  • Freeze-Free® technology to ensure vaccines are never exposed to harmful sub-zero temperatures.
  • Corrosion tested to DIN 8985
  • In-built handle with lock
  • In-built solar-powered temperature display
  • All-metal, high strength hinges
  • Heavy-duty castors to make handling easier
  • Grade A User-independent freeze protection (UIFP)
  • Completely battery free, with plug-and-play connectors for easy installation
  • Environmentally friendly: R600a refrigerant with low global-warming potential and innovative insulation technology, giving exceptional energy efficiency
  • Packaging tested to industry standards
  • Tested to survive ambient storage temperatures up to +70°C
  • Storage basket included

Technical Specification


Net vaccine storage capacity 52.5 litre
Climate zone Hot zone (+43°C)
Minimum rated ambient temperature +5°C
Autonomy time 74hr 15min at +43°C
Recommended solar array size > 260 Wp


External: H x W x D 960 x 1000 x 740 mm
Shipping weight 115 kg
Gross volume 82 litre
Storage baskets 1

Technical Details

Operating voltage 24 to 45 Vdc
Minimum starting voltage 24 Vdc
Minimum starting power 40 W
Minimum solar radiation for continuous running 150 W/m2 (using 260 Wp array)
Compressor Danfoss / Secop BD35K
Refrigerant R600a

WHO Pre-qualification

Test procedure E003/RF05.UP.4
Performance specification E003/RF05.4
PQS reference E003/078

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Download the VC50SDD datasheet

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