The 24S24.21MXW from Calex Manufacturing is a DC to DC Converter with Input Voltage 9 to 36 V, Output Voltage 1 24 V, Output Current 1 21 A, Output Power 500 W, Isolation Voltage 2.25 kV. Tags: PCB Mount, Buck-Boost. More details for 24S24.21MXW can be seen below.