What this MCCB carries and where it fits
The Siemens SENTRON 3VA2010-6HL32-0CA0 is a 3-pole molded case circuit breaker rated for 100 A continuous current at 40 °C, with an ETU320 electronic trip unit for line protection. Its 242 kA breaking capacity at 240 V means it can safely interrupt fault currents up to that level without upstream cascading in a distribution panel — that's the number that decides whether it clears a high-fault installation or lets the arc flash through. At 415 V and 440 V it still holds 187 kA, dropping to 121 kA at 500 V and 4 kA at 690 V. It includes an undervoltage release (UVR) as the auxiliary release design, but no auxiliary contact version, no communication function, no phase failure detection, and no ground fault monitoring. The trip indicator is absent, and there is no voltage trigger. The supplied basic switch is 3VA2010-6HL32-0AA0, and the integrated auxiliary trip is 3VA9608-0BB24. Mechanical endurance is rated at 20,000 operations. Maximum power loss is 16 W. The operating temperature range is -25 °C to 70 °C, and storage range is -40 °C to 80 °C. Dimensions are 181 mm height, 105 mm width, and 86 mm depth — this width (105 mm) is what determines whether it fits a standard 3-pole MCCB slot in a panel without re-drilling the gland plate.
Derating reality: the 100 A rating holds to 50 °C
The rated continuous current Iu is 100 A, and it holds that value at ambient temperatures up to 50 °C. At 55 °C it derates to 96.25 A, at 60 °C to 92.5 A, at 65 °C to 88.75 A, and at 70 °C to 85 A. That means in a hot panel — say a crowded enclosure near a furnace line — you lose 15 A off the top at max operating temp. Plan the load accordingly; don't assume 100 A at the panel's internal ambient.