Rated current and thermal derating — the real-world ampacity
Rated 50 A continuous at 40 °C ambient, and it holds that same 50 A rating at 45 °C and 50 °C — no derating needed until you cross 55 °C, where it steps down to 49 A, then 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. That thermal curve matters when you're packing this into a panel with other heat sources: at 70 °C ambient you lose 5 A off the nameplate, so the load calculation for the branch circuit needs to account for the actual enclosure temperature, not the 40 °C reference point.
Breaking capacity — what it can interrupt at your system voltage
Short-circuit breaking capacity varies sharply with system voltage: 53 kA at 240 V AC, 32 kA at 415 V AC, 14 kA at 440 V AC, and 8 kA at 500 V AC.
Dimensions are 76.2 mm wide (3 inches), 130 mm tall (5.12 inches), and 70 mm deep (2.76 inches) — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without surprises.
Lifecycle status is current production.