What fits and locks: 3-position, 3.96mm pitch, right-angle
This is a shrouded single-row header with 3 positions on 0.156" (3.96mm) pitch — the standard MTA-156 spacing that mates with the matching MTA-156 receptacle housing and crimp contacts.
Tin plating and current: what the 150 µinch means
At 3.96mm pitch, the header can handle the full ampacity of 18-22 AWG wire used in the MTA-156 system.
Voltage, temperature, and flammability for industrial use
Rated 600 VAC — this header is suited for line-voltage power distribution inside industrial control panels and general-purpose equipment.
Is 3-644613-3 the same as 3-644613-2?
The base product number 644613 covers both variants. The difference is the suffix: -3 indicates a 3-position version; -2 would be a 2-position version. Same pitch, orientation, finish, and locking — only position count changes.