K-curve trip for motor branch circuits
The 5SL7240-3RC: The K curve trips between 10 and 14 times rated current, so it handles the inrush of a motor or transformer load without nuisance tripping — a common fit for 40 A motor branch circuits in distribution boards.
DIN-rail fit and panel integration
The 2-pole format occupies two module widths, so factor the space into your panel fill before committing the BOM.