The Schneider Electric A9N4P50CIN is an Acti9 xC60 miniature circuit breaker (MCB), 4-pole, rated 50 A with a C curve and a 10 kA breaking capacity per IEC 60947-2.
Lifecycle status is active — this is a current-production catalog item, not a phase-out or NRND line. No last-time-buy window to track.
Mounts on standard DIN rail in the enclosure.