The Siemens SENTRON 3VA2010-5HL32-0HL0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 100 A and a rated insulation voltage Ui of 800 V. Its interrupting capacity peaks at 187 kA at 240 V and holds at 121 kA across 415 V and 440 V — figures that tell you it can handle high-fault panels without cascading upstream. At 690 V the rating drops to 3.4 kA, so verify the available fault current at that voltage before committing the BOM line. The breaker carries an ETU320 electronic trip unit, a shunt trip (STL) auxiliary release, and a complement of auxiliary contacts: 2 auxiliary switches plus 1 trip alarm switch plus 1 electrical alarm switch (HQ version).
Thermal derating and endurance
Rated current holds at 100 A from 40 °C through 50 °C ambient. Above that it steps down: 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. Mechanical endurance is 20 000 cycles, which is typical for a distribution MCCB; not a switching-duty contactor, but fine for infrequent manual isolation.
Dimensions: 105 mm wide, 181 mm high, 86 mm deep. That width is the standard 3-pole MCCB footprint for the SENTRON 3VA platform — it drops into the same panel cutout as other 100 A frames in the family. The depth of 86 mm means it clears a 100 mm deep enclosure without forcing a deeper gland plate. Operating temperature range is -25 °C to 70 °C; storage range -40 °C to 80 °C.