Rated 80 A at 40 °C through 50 °C, the breaker derates to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C — a thermal curve that matters when the breaker shares an enclosure with other heat sources. Interrupting capacity reaches 121 kA at 240 V AC, 76 kA at 415 V, 53 kA at 440 V, and 12 kA at 500 V — figures that govern the available fault current the installation can handle without upstream cascading.
Dimensions: 130 mm height, 76.2 mm width (3 in), 70 mm depth (2.76 in). The 3-pole body mounts into standard MCCB panel cutouts or on a mounting plate; Maximum power dissipation is 19 W at rated load — a figure to account for in enclosure thermal calculations, especially when multiple breakers are ganged.