What this SENTRON MCCB carries
The Siemens SENTRON 3VA1110-5MH36-0JH0 is a 3-pole molded case circuit breaker rated for 100 A continuous, designed specifically for starter protection — meaning it's built to handle motor-starting inrush without nuisance tripping while still clearing faults fast. 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. At 500 V and 690 V the interrupting rating drops to 7.5 kA, which is typical for this frame size; if your system runs those voltages, verify the available fault current stays under that ceiling.
Thermal derating — what 100 A means in a hot panel
Rated 100 A from 40 °C through 50 °C ambient. 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. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage number is wider because it's not carrying current — handling and shipping limits, not running limits.
What's built into this variant
Comes with a shunt trip release (STL) for remote tripping and a 2-auxiliary-switch + 1 trip-alarm-switch HQ block for status feedback back to the PLC. No undervoltage release, no ground-fault monitoring, no communication module — this is a straightforward power breaker with remote trip and indication. Rated insulation voltage is 800 V, and maximum power loss is 25 W — figure that into your panel thermal budget if you're stacking several breakers in a row. 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.