It's designed for instantaneous operation, meaning no intentional time delay on the overcurrent side, so it clears fast on hard faults. The higher IEC rating gives headroom if the installation standard calls for industrial coordination.
Derating and temperature
At 40 °C it derates to 30.4 A, at 50 °C to 28.8 A, and at 70 °C to 24.64 A. Storage range is wider, but the operating limits are what govern in-service reliability.
Halogen-free and silicon-free construction, which matters for clean-room or high-reliability installations where outgassing can contaminate contacts or optics.
IP20 with the distribution board installed and conductors connected. Degree of pollution 2 and overvoltage category III. Energy limitation class 3.