It breaks 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — numbers that tell you it handles high-fault utility feeds, not just branch circuits.
At 240 V the 75.6 kA interrupting rating is high enough for most service-entrance and main-switchboard positions. The 52.5 kA at 415 V and 11.9 kA at 690 V let you coordinate downstream in a 400 V distribution panel without cascading a fault through upstream gear.
Thermal derating and panel ambient
Full 16 A rating holds up to 55 °C ambient; at 60 °C it derates to 15 A and holds there through 70 °C.
Mounts on DIN rail. The 70 mm depth by 101.6 mm width by 130 mm height footprint is the standard 4-pole MCCB form factor for this class — it drops into a SENTRON panelboard or a standalone enclosure without re-drilling.