What this MCCB delivers
The Siemens 3VA2110-7MS36-0JA0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed within that window, per the datasheet. Its 3-pole design and starter-protection construction make it a direct fit for motor branch circuits where a shunt trip (STL) auxiliary release is required for remote or emergency trip.
Interrupting capacity — what the numbers mean
This breaker carries a symmetrical interrupting capacity of 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. The 690 V figure is notably lower — that's the voltage class where the arc extinction physics changes for this frame size; it still clears a fault, but the available fault current must be limited to under 3.7 kA at that voltage. For most 400 V-class industrial panels, the 242 kA rating provides ample margin even on high-capacity transformer secondaries.
Dimensions and panel fit
The 3VA2110-7MS36-0JA0 measures 181 mm high, 105 mm wide, and 86 mm deep. That 105 mm width is standard for a 3-pole MCCB in this SENTRON frame — it occupies three 35 mm DIN spaces if mounted on a DIN rail, or bolts directly into a panel cutout. The 86 mm depth leaves clearance for rear-connected busbars or cable lugs without crowding the enclosure door.