Mounting position is unrestricted, and the IP20 rating (with conductors connected) is typical for enclosed distribution boards; no special sealing needed for dry indoor environments.
Rated 400 V AC between phases, with a maximum operating voltage of 440 V AC. The 50/60 Hz frequency range covers both 50 Hz European and 60 Hz North American installations. DC rating tops out at 72 V — not a primary DC breaker, but usable on low-voltage DC control circuits if needed. Power loss per pole is 1.2 W at rated current in hot operating state — 3.6 W total for the 3-pole assembly. In a densely populated distribution board, that heat adds up; ensure adequate ventilation or derating if ambient exceeds 40 °C. The -40 °C to +75 °C storage range is generous, but operating temperature is bounded by the standard derating curves for EN 60898.