Under UL 1077, the interrupting rating is 5 kA, so confirm the available fault current if the panel is built to North American standards.
The 3 A rating holds at 35 °C ambient. At 40 °C it derates to 2.84 A, at 45 °C to 2.75 A, and at 55 °C to 2.56 A.
Mounting position is any, so vertical or horizontal orientation in a crowded enclosure is fine. Neutral conductor is switched (3P+N), so it disconnects the neutral on fault, which matters for TN-S or TT systems where you need full isolation.
Rated for ambient temperatures from -40 °C to 75 °C, with humidity limits of 95% up to 55 °C, tapering to 35% at 75 °C. IP20 with conductors connected. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. Lifecycle status is current production.