The closest functional sibling is the 5SY4301-7CV, a 1-pole version with the same C characteristic and 15 kA breaking capacity. The 5SY4432-7CV is the 4-pole variant — same trip curve, same interrupting rating, but for three-phase-plus-neutral circuits. It will not drop into a panel wired for the single-pole sibling without rewiring the busbar and load connections.
Rated current derates with ambient temperature: 32 A at 35 °C, 30.24 A at 40 °C, 29.31 A at 45 °C, 28.4 A at 50 °C, and 27.36 A at 55 °C. The part is halogen-free and silicon-free, meeting clean-room and low-outgassing requirements.