What this MCCB carries — and what it means on the panel
The Siemens SENTRON 3VA2110-5KP32-0AG0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across its full operating temperature range from -25 °C to 70 °C — no derating needed up to that limit, which simplifies panel calculations when the breaker sits near warm drives or transformers. It's designed for line protection, meaning it guards the feeder cable and downstream distribution, not a specific motor or load group. The interrupting ratings climb steeply at lower voltages: 187 kA at 240 V, 121 kA at 415 V or 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA figure at 240 V means this breaker handles high-fault-current scenarios common in large transformer-fed panels without needing a current-limiting fuse upstream — it's self-protecting at that level. Rated insulation voltage is 800 V, and the breaker includes a communication function for integration with monitoring systems. The auxiliary switch configuration is one auxiliary switch plus one trip alarm switch (HP type), giving a clean signal path for remote fault indication without extra wiring.
Fit and footprint — panel integration notes
Dimensions are 86 mm deep, 105 mm wide, and 181 mm tall. That 105 mm width per 3-pole MCCB is standard for the SENTRON 3VA frame — it occupies one fixed position on the DIN rail or mounting plate. The depth of 86 mm means it clears most standard enclosure back-panels without forcing a deeper gland plate. Maximum power loss is 10 W.