Rated at 250 VAC and with a flammability rating of UL94 V-0, this header suits general-purpose equipment inside an enclosure where flame-retardant materials are required.
Tin contacts are rated for fewer mating cycles than gold — expect 25–50 cycles before wear begins to affect contact resistance. This is fine for one-time assembly or infrequent field service. The board guide assists alignment during assembly, reducing pin damage.
The 3-644486-2 is single-row — if your receptacle is a single-row MTA-100, the dual-row part will not fit.