Temperature derating — the real current rating
The 5SU1356-6KK32: The 32 A rating holds at 30 °C ambient. At 40 °C it's 30.4 A, at 50 °C it's 28.8 A, and at 70 °C it drops to 24.64 A. If the panel runs warm — say 50 °C inside the enclosure — the continuous load should be capped at 28.8 A. That's the figure that governs the circuit design, not the 30 °C number.
Mounting and wiring notes
Snaps onto DIN rail, 2 MW wide (36 mm), depth 77 mm, installation depth 70 mm. Supply can enter from top or bottom — no orientation restriction. Mounting position is any, so it fits in a horizontal busbar arrangement or a vertical panel. IP20 with conductors connected and distribution board installed — standard for enclosed distribution. Halogen-free and silicon-free, which matters for clean-room or low-smoke installations.