What this MCCB carries and where it fits
The Siemens SENTRON 3VA2110-7KQ46-0AA0 is a 4-pole molded case circuit breaker rated for 100 A continuous current, designed for line protection in distribution panels. Its interrupting capacity hits 330 kA at 240 V, dropping to 242 kA at 415 V and 440 V, and 187 kA at 500 V — at 690 V it still clears 3.7 kA. That 330 kA figure at 240 V means it handles high-fault scenarios like transformer secondaries or large motor banks without needing upstream current-limiting fuses. The breaker includes ground-fault monitoring via summation current formation on L+N conductors, plus a communication function for integration into a plant monitoring system. Rated insulation voltage is 800 V, so it's comfortable on 480 V or 600 V class systems.
Sizing and thermal performance across the panel ambient range
The 100 A rating holds flat from 40 °C through 70 °C — no derating needed across typical enclosure ambients. That's useful for a panel packed with drives or transformers that push internal temperatures. The adjustable thermal-magnetic trip range spans 150 A to 1200 A (minimum to maximum), with the full-scale value at 100 A and initial value at 20 A, so it can be tuned to protect a specific downstream load rather than just the bus. Power loss maxes at 10 W, which is modest for a 4-pole frame — keeps heat load low in a sealed enclosure. Dimensions are 181 mm high, 140 mm wide, 86 mm deep; the 140 mm width is standard for a 4-pole MCCB footprint, so it drops into existing SENTRON panel layouts without re-drilling the mounting plate.
Environmental and storage tolerances
Operating temperature range is -25 °C to 70 °C; storage range extends from -40 °C to 80 °C. That -40 °C storage floor matters for cold-chain or unheated warehouse staging — the breaker won't suffer damage sitting in a sub-zero shipping container before installation. The operating low end at -25 °C covers most outdoor panel applications in temperate climates.