What it is and what it does
The SENTRON 3VA2110-5JP32-0JC0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across its entire ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It's designed for line protection, meaning its primary job is to protect cables and distribution bus from short-circuit and overload faults in a main or feeder panel. Breaking capacity is the headline number here: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA rating at 240 V tells you this breaker is built for high-fault installations — it will safely interrupt a bolted fault up to that level without cascading damage upstream. The 690 V figure drops to 3.7 kA, so if your service voltage sits at 690 V, verify the available fault current stays under that threshold. It carries a communication function, a shunt trip (STL) auxiliary release, and two HQ auxiliary switches — so it integrates into a monitored, remotely-tripped distribution scheme. The shunt trip lets a PLC or safety relay command an immediate open, useful for emergency-stop chains or remote load shedding.
Panel fit and integration
Dimensions: 181 mm high, 105 mm wide, 86 mm deep. That 105 mm width is the standard 3-pole MCCB footprint for this frame size — it occupies three 35 mm DIN-rail modules worth of panel space. The 86 mm depth means it clears most standard enclosure back-panels without protruding into the wiring gutter. Power loss is listed at 10 W maximum — negligible for panel thermal budgeting, but worth noting if you're packing multiple breakers into a sealed, non-ventilated enclosure. The operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C.
Lifecycle and sourcing
The supplied basic switch is order code 3VA21105JP320AA0 — that's the internal switching mechanism. If you're replacing just the switching core rather than the full breaker, that's the number to cross-reference.