Its Type B tripping characteristic means it handles resistive and moderate inductive loads — common for general-purpose final circuits in commercial and residential distribution boards — with instantaneous magnetic release for short-circuit protection. Rated 10 A at 30 °C ambient, the unit derates linearly as panel temperature rises: 9.5 A at 40 °C, 9 A at 50 °C, 8.1 A at 65 °C, and 7.7 A at 70 °C. Breaking capacity is rated 10 kA per EN 60898 (the household-standard test) and 20 kA per IEC 60947-2 (the industrial-standard test), so it handles fault currents up to 20 kA at the supply terminals in an industrial panel. Insulation voltage (Ui) is 264 V, surge voltage resistance is 4 000 V, and overvoltage category III applies — typical for fixed-installation distribution boards downstream of the main incoming supply.
The 5SU1324-6KX10 occupies 3 modular width units (54 mm) on a DIN rail, with a depth of 77 mm and an installation depth of 70 mm behind the panel face. Rated IP20 with the distribution board installed and conductors connected — that is the standard touch-protection level for enclosed panel-mount gear; the breaker itself is not intended for exposed or washdown locations.