The 2-1903415-1: Within the Grace Inertia GIC series, this 3-position header at 9.00mm pitch occupies the high-voltage, low-circuit-count slot — compare with the 1-2232960-3, which is also a 3-position single-row header but at 0.098" (2.50mm) pitch and rated 2 A at 50VAC, making it a signal-level alternative rather than a power interconnect. For a right-angle board-to-board variant, the 1-1871673-2 offers 4 positions in dual-row at 2.50mm pitch with a detent lock, but its 250VAC/DC rating is well below the 600VAC of this part.
The glass-filled PA66 insulation handles the 105°C operating ceiling without softening.
Tin-plated mating contacts are suited for moderate cycle counts in controlled environments.