173925-1 is a 3-circuit vertical PCB header assembly designed for use with Universal MATE-N-LOK and Universal MATE-N-LOK II connector systems. The header features ACTION PIN contacts with a 0.200 inch (5.08 mm) typical contact centerline spacing and an A dimension of 1.000 inch (25.40 mm). The assembly has a maximum height of 0.630 inch (16.00 mm) and is designed for installation in PC boards using an arbor tool. This header mates with plug housings using socket contacts, including part numbers 1-480700-0, 350766-1, and 770018-1, making it suitable for wire-to-board power circuit applications in home appliances and industrial equipment.