The 2-pole configuration handles two phases of a three-phase motor circuit, typically used in applications where the third pole is managed externally or the load is single-phase through a drive. Rated 220 A continuous.
The 2-pole drive controller form factor is common in motor control centers (MCCs) and drive input sections where a contactor isolates the drive from the line. It's not a general-purpose contactor for resistive loads — it's sized for the inrush and continuous current of a motor drive.