What this 1-pole MCCB carries — and where the ratings matter
Its 100 A rated continuous current (Iu) holds flat from 40 °C through 50 °C, then derates to 98 A at 55 °C and 91 A at 70 °C — so in a warm panel you still get nearly the full 100 A, but above 50 °C the thermal curve starts pulling back. The interrupting capacity tells the real story: 53 kA at 240 V, dropping to 7.5 kA at 415 V. At 240 V that is serious fault-clearing headroom for a 1-pole device; at 415 V the 7.5 kA still covers most commercial and light industrial services, but you want to confirm the available fault current at the installation point before committing the BOM line.
At 25.4 mm wide (1 inch) and 130 mm tall, this single-pole breaker fits a standard MCCB mounting footprint — no DIN-rail adapter needed, it bolts directly into the panel. Depth is 70 mm (2.8 inches) including the front projection.