What this 3-position header does on your board
The 5.00 mm pitch sets the board footprint and terminal spacing—wide enough to route 16 A per circuit without thermal crowding, and standard for TB Buchanan mating plugs.
The base product number 2351885 covers multiple position counts; the -3 suffix identifies the 3-position variant. No official successor or pin-compatible cross-reference is listed from TE.
The 2351885-3 shares the same 5.00 mm pitch, 16 A rating, 300 V rating, and vertical through-hole footprint as the 2-position 2351885-2. If your BOM calls for 3 circuits, the -3 is the direct fit; the -2 will not populate the third position. Both use the same mating plug and terminal part numbers.
Green PA66 housing with UL94 V-0 flammability rating suits equipment inside an enclosure requiring flame-retardant materials—typical for industrial control cabinets and power distribution blocks.