What the rating tells you about fit
The A2A200CTL-2SB: Rated 200 A continuous, this contactor is sized for switching motor loads or resistive heating banks up to that current on a 2-pole configuration. The 200 A figure governs the main power circuit; auxiliary contact ratings are separate and should be verified against the coil load. In a panel, the A2A footprint matches the standard ABB block-style contactor layout — DIN-rail or screw-mount, depending on the specific adapter base used.