The Schneider Electric A9N19813 is an Acti9 C120H miniature circuit breaker (MCB) rated 80 A at 30 °C with a D curve and 10 kA breaking capacity, covering both IEC 60898-1 and IEC 60947-2 standards. The D curve (10–14× In magnetic trip) is sized for motor and transformer inrush currents that would nuisance-trip a C curve — expect it to hold through a soft-start or direct-on-line start on a 30–40 kW motor at 400 V.
Clip-on mounting to DIN rail, 2-pole (2P) configuration, 6 module pitches wide. Tunnel terminals accept 1–50 mm² rigid or 1.5–35 mm² flexible — sized for the 80 A feed; strip 14 mm and torque to 3.5 N·m.