The C-curve trips between 5× and 10× rated current — so at 25 A, magnetic trip starts around 125 A and is guaranteed by 250 A. Temperature derating is baked in: at 40 °C ambient the breaker carries 23.68 A continuous, at 45 °C it's 23 A, and at 55 °C it drops to 21.54 A. The 3-pole design (3P) switches all three phases together; there's no switched neutral, so it's for TN or IT systems where the neutral is bonded elsewhere.
Width is 54 mm (3 modular units), depth 76 mm, height 90 mm — fits any standard distribution board. Mounting position is unrestricted, so you can lay it sideways or upside-down if the enclosure layout demands it. IP20 with connected conductors, meaning finger-safe once wired, but not protected against dripping water — keep it inside a cabinet.