The 77313-401-32LF: Each contact is rated 3 A continuous. The tin-on-tin mating finish (78.7 µinch on both pin and post) is cost-effective for applications where the connector mates a few times over its life — think test fixtures, power supplies, or internal board interconnects. For frequent reconnects, a gold-plated sibling (e.g. 77313-118-26LF with 30 µinch gold) would give more cycles.
Board Fit and Mating Dimensions
The unshrouded design means no side walls to interfere with adjacent connectors.