The TP-DCDC-HP Series of DC to DC converters offered by Tycon Power® are a low cost and high reliability solution for those requiring 24VDC or 56VDC Power over Ethernet voltage from a 12V, 24V or 48V battery system. They have an integrated PoE injector. Passive PoE and 802.3at models are available.
The input and output are isolated so the units can accept minus voltage on input and can be wired for positive voltage on the output for those systems which are negative voltage based.
If the remote device does not support power over Ethernet, splitters (POE-SPLT-S) are available to split the data and DC voltage at the remote device. If the remote device requires reverse voltage the POE-XOVER-S cable can be used.