This is a 24-position, dual-row, shrouded header from TE's CT series. The mating half is a CT series crimp receptacle housing (e.g., 1-292132-x or 2-292132-x) loaded with tin-plated female terminals. Wire gauge selection drives the per-contact current rating — the header itself does not set a fixed ampacity; the current limit follows the terminal and wire size used in the mating connector.
What the tin plating and detent lock mean for the build
Tin-plated mating contacts are rated for a lower number of mating cycles than gold — typically 50 to 100 cycles before wear exposes the base metal. This is acceptable for one-time or infrequent disconnect applications (e.g., internal wire-to-board connections in appliances or industrial controls).