RJ45 8P8C 3 Jacks Splitter Board Interface Module with Simple DIN Rail Mounting feet.
 

Part number: MD-D239AS.
RJ45 8P8C jacks.
Simple DIN Adapters (Feet): for width 35 / 32 / 15mm DIN rails.
FR-4 fiber glass PCB, dual copper layers.
External dimensions: 72 x 49.5 x 38mm(W x L x H).
PCB dimensions: 72.5 x 47.35mm(W x L).
100% new, never used.
 

Rated voltage: 60V.
Rated current: 500mA / per pin.
Operating Temperature: -20ºC to 50ºC