The CHB300W-110S28 from Cincon Electronics is a DC to DC Converter with Input Voltage 43 to 160 V, Output Voltage 1 28 V, Output Current 1 10700 mA, Output Power 198000 to 300000 mW, Isolation Voltage 500 to 3000 V. Tags: Through Hole, Buck/Step down. More details for CHB300W-110S28 can be seen below.