The 3 hp at 230 V is the AC motor switching rating — that's the number that tells you whether this contactor will start and stop your load day in, day out without welding contacts. It's not the resistive heating rating; it's the real-world motor curve. For a 3 hp, 230 V single-phase or three-phase motor, this contactor is sized right. Storage range of -55 to +80 °C covers shipping and idle spares on the shelf. That saves rail space and one wiring step.
If you're looking at a panel originally built with the 3RT2026-1AG20 (same S0 frame, same coil voltage family), the 3RT2026-1AR60 drops into the same DIN rail footprint and wiring pattern. The difference is the coil variant — verify your control voltage matches the 1AR60 coil rating before you swap.