What this SENTRON MCCB carries
Breaking capacity is 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — numbers that tell you this breaker can sit upstream in a high-fault panel without needing a current-limiting fuse ahead of it.
Thermal derating — what 100 A means in a hot panel
At 55 °C it's 98 A, at 60 °C it's 96 A, at 65 °C it's 94 A, and at 70 °C it's 91 A. That's a gentle slope — the breaker doesn't fall off a cliff when the panel warms up, which matters in a motor control center packed with drives. The storage number is wider because it's not carrying current — handling and shipping limits, not running limits.
What's built into this variant
Depth is 70 mm, width 76.2 mm, height 130 mm — standard 3VA frame footprint, so it'll drop into the same DIN-rail or mounting-plate cutout as other 3VA breakers of this size.
