This is a highly technical device that can best be explained by reading the instruction manual

NMEA 2000 Network compatible
VE.Net to NMEA 2000 drop cable is equipped with a Micro-C (M12) male connector to be connected to a corresponding T-connector in the backbone.
Operating voltage 7 – 70VDC
Typical current consumption 20 mA at 12VDC
NMEA2000 Load Equivalent Nr: 1
Operating temp -20 to +50 Deg C
Dimensions 70 x 50 x 20 mm
Compatible with Victron VE Bus products except – Blue Power Panel 2 – Blue Power Panel GX – Victron Global Remote or Ethernet Remote.