The 1744418-3: The friction lock provides retention against vibration without a secondary latch — it's a single-action mate that holds the pair together until deliberately released.
Mating Half and Terminal Fit
The 1-2232960-3 is also a 3-position, 2.50 mm pitch header from the same series, but it uses a locking ramp instead of a friction lock and carries a 2 A rating at 50 VAC — significantly lower than the 1744418-3's 4.2 A at 250 VAC. The locking ramp provides a different retention feel but the same basic mating envelope.