What this 1-pole MCCB carries — and where the ratings matter
The Siemens SENTRON 3VM1110-3ED16-0AA2 is a 1-pole molded case circuit breaker (MCCB) sized for line-protection duty. 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.
Panel fit and mounting
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. The front face carries IP40 protection, so it is fine in a closed enclosure but not washdown-rated. Maximum power loss is 8.3 W, negligible for thermal budgeting in a multi-pole group. Rated insulation voltage is 500 V, and it handles up to 500 V DC as well, so it can serve in DC distribution sub-panels.