The Schneider Electric C60H3P16AC is a C60H-series miniature circuit breaker from the Multi9 range, rated 16 A at 30 °C on a 3-pole configuration with a C-curve trip characteristic (5–10 × In magnetic trip limit). The C-curve means the magnetic trip activates between 5 and 10 times the rated current — so for this 16 A breaker, instantaneous trip occurs between 80 A and 160 A.
Breaking capacity is 10 kA Icu at 440 V AC (IEC 60947-2), stepping up to 15 kA at 400–415 V AC and 30 kA at 230–240 V AC. For DC applications, it handles 25 kA at 125 V DC (2-pole series) and 40 kA at 125 V DC (3-pole series). These figures give the panel designer headroom for selectivity coordination downstream. A 10 kA Icu at 440 V covers most industrial secondary distribution scenarios; the higher Ics rating (15 kA) means the breaker can be relied on for repeated fault clearing without immediate replacement, which matters for uptime in continuous-process lines.
That's enough for a 6 AWG feed on the line side in most panel builds. The 54 mm width (6 x 9 mm pitches) means it occupies six module spaces on the DIN rail. Factor that into your enclosure fill calculations — a 24-way board loses six positions to this single breaker.