Amazon.com: Power Supply Compact DC to DC Isolated Step Down Voltage Converter, Regulator, Protected & Non-Latching, 48V in, 3.3V Out at 26A, High Reliability (2.8 million hours), Extreme Environmental Conditions : Electronics
Amazon.com: 18-36VDC Wire Terminal Input, High Power DCDC Converter and 56V 30W 10/100 Passive PoE Output,PoE Pinout: 4,5V+ ; 7,8V-, Isolated, Shielded and Surge Protected : Electronics
Amazon.com: Samlex IDC-360A-12 Fully Isolated 360 Watts DC-DC Converter, Provides a highly regulated output DC voltage of 12.5 Volts for an input DC voltage range of 9-18 Volts and rated output current
Amazon.com: Isolated Board Mount DC/DC Converter, Rail Approvals, 2 Output, 40 W, 12 V, 1.65 A, -12 V, 1.65 A : Electronics