Two-position power header with 30 A per blade
The Molex 1720420201 is a 2-circuit, single-row header from the Super Sabre 172042 series, designed for wire-to-board power distribution. It carries male blades on a 7.50 mm pitch, rated 30 A per circuit at 600 V — bus-level current in a compact two-position package. The silver-plated contacts (100.0 µin / 2.54 µm) handle repeated mating cycles without the cost of gold, and the locking ramp holds the pair together under vibration.
What the 30 A rating means for your build
30 A per circuit is not a signal-level rating — each blade carries the main DC rail current. The 7.50 mm pitch provides the creepage distance needed to support the 600 V rating without forcing an oversized board footprint. The silver contact finish is chosen for power duty: it maintains low contact resistance under high current and survives more mating cycles than tin, though it tarnishes faster than gold in corrosive environments.