To ensure refrigeration reliability in transportation applications, each unit must be thoroughly tested to avoid expensive cargo losses. TDK-Lambda’s 5-year warranty RWS-B 600W power supply is used to supply the 12Vdc input needed during the test process by a producer of high quality refrigeration units. The /CO2 option was specified to help protect the power supply printed circuit boards from ingress of any contaminants. Also, the customer preferred the additional protection the RWS600B galvanized sheet metal provided against corrosion. Local support and relationship also helped win the opportunity.