The 796638-3 is a 3-position male pin header from the Termi-Blok, Buchanan series, designed as the board-side interface for a pluggable terminal block. It mates with the matching Buchanan cage-clamp or screw-clamp plug to route field wiring to the PCB. The 0.200" (5.08mm) pitch is the standard spacing for 300 V rated terminal blocks; it sets the board footprint and the per-contact current ceiling at 15 A under UL conditions.
Pitch, current, and voltage — what the ratings mean
At 15 A per contact and 300 V, this header handles moderate power for a 3-circuit tap — think small motor drives, lighting ballasts, or control transformers where the total load stays under 45 A across the three positions. Tin contact finish is cost-effective for assemblies that mate fewer than 50 times over the product life. In a field-service terminal block where the plug is disconnected quarterly, the tin surface will wear through to the copper alloy base metal after about 12 years, increasing contact resistance.
Board layout fit: footprint and keep-out
ROHS3 compliant; green color housing is standard for the Buchanan series.