At 240 V it interrupts 75.6 kA; at 415 V that drops to 52.5 kA, and at 440 V it's 32 kA — numbers that tell you this is a high-interrupting-capacity unit sized for main or feeder duty in a 400 V-class panel, not a branch device. The interrupting ratings are what decide whether it coordinates with the upstream transformer or generator breaker, so check your available fault current against the 415 V column if you're on a 400 V system. This is a straight line-protection MCCB: thermal-magnetic, no electronics, no fieldbus. If your BOM calls for a shunt trip for emergency-off, that's the STL release option on this unit. At 55 °C it's 38.4 A, at 60 °C it's 37.6 A, and it stair-steps down to 36 A at 70 °C.
Footprint and panel fit
The case measures 76.2 mm wide by 130 mm tall by 70 mm deep — a standard 3-pole MCCB footprint that drops into a SENTRON distribution panel or a generic DIN-rail adapter plate. The IP40 front protection means it's fine inside a closed enclosure; no washdown rating, so keep it out of wet areas. Latching endurance is rated at 15,000 operations — that's the mechanical life, not the electrical endurance under load.