EN60335. 3. Recom 3W Single Output, Wired, Encapsulated Regulated AC-DC Converters - RAC03-SER/277 Series. The Recom wired 3W RAC03-SER/277 series power modules are regulated AC/DC converters with 3kVAC isolation and a round, flat shape. This series has been designed to offer low stand-by consumption and an ultra-wide input voltage range. Uses include a variety of applications in building automation, security and communication systems. One of the most important features is the extended operating temperature range, as a consequence this series of power modules can now be used in areas where temperatures drop as low as -40°C. 40mW max. No Load Power Consumption High Efficiency up to 76% Isolated Output 3kVAC / 1 min SCP, OVP Protection Wide Operating Temperature Range: -40°C to +85°C Reliable even at freezing temparatures Universal Input 85-305VAC