The housing is rated UL94 V-2, which is standard for general-purpose equipment inside an enclosure.
Compared to the 1-2232960-3 (3 positions, 2.50mm pitch, 2A at 50VAC), this 641967-1 carries significantly higher current at a wider pitch — 12A vs 2A — and is designed for power rather than signal. The 1318699-3 (12 positions, 4 rows, 4.20mm pitch, 5A at 250VAC, gold-plated) is a higher-density, higher-cycle alternative but with lower per-contact current and a different row configuration. The tin-plated mating contacts on 641967-1 are a cost trade-off vs the gold plating on 1318699-3 — if your application requires frequent mating cycles (hundreds or more), the gold option may be worth the premium.