Board-to-Cable Header for Power Distribution in Enclosures
The 2029172-4: This 4-position header from the VAL-U-LOK series mates with the corresponding receptacle housing and crimp terminals to form a board-to-cable/wire connection rated 9 A per contact at 600 VAC. The 4.20 mm pitch gives you room to route traces between pads on a standard FR-4 board without necking down to sub-0.25 mm track widths, even at 2 oz copper. Board lock features press into the PCB during through-hole soldering, anchoring the header so the solder joint doesn't take the full shear load from the mated cable assembly. In a lighting fixture or conveyor control panel, that extra retention keeps the connector seated when the cable gets snagged during maintenance.
What Mates With This Header and How to Terminate
The mating half is a VAL-U-LOK receptacle housing (e.g., 2029172-2 or similar 4-position cavity) that accepts 20-24 AWG crimp terminals. The square pin shape (0.64 mm typical) gives good solder wetting and a solid mechanical anchor.
Current Rating and Thermal Derating in the Enclosure
The 600 VAC rating is a creepage-and-clearance limit for the 4.20 mm pitch and housing material — in a pollution degree 2 environment, you can run 480 VAC line-to-line without worrying about tracking across the insulator surface.