What this connector is
The Amphenol FCI 87185-126HLF is the 26-circuit member of the BERGSTIK II single-row 0.100-inch (2.54 mm) pitch header series. It is an unshrouded male-pin through-hole board-to-board connector — the square pin profile drops into a standard 0.100-inch grid and mates with the matching BERGSTIK II IDC receptacle or dual-row socket. Rated 5 A per contact at up to 110 V, with phosphor bronze contacts finished in either standard gold or Amphenol's GXT enhanced gold alloy at 30 µin (0.76 µm) thickness on the mating side.
Ratings that matter
5 A per contact at 110 V sits comfortably above the signal-duty threshold for this pitch class — it will handle low-level power distribution on the same board-to-board bus without a separate power header in many industrial control boards. The 0.100-inch insulation height of 0.100 inch (2.54 mm) sets the stack-height baseline; the overall contact length of 1.238 inches (31.45 mm) and post length of 0.095 inch (2.41 mm) tell you the board thickness window the header is designed for — the post length is short, so this header is optimised for thin-to-medium board thicknesses. UL94 V-0 flammability rating on the housing means it clears the common industrial panel-side flame-retardancy requirement without needing a separate flame-shroud.