Siemens SENTRON 3VA2110-5HL32-0BL0 — 100 A MCCB, Line Protection, ETU320
It carries a rated insulation voltage Ui of 800 V and delivers a breaking capacity of 187 kA at 240 V, 121 kA at 415 V, 121 kA at 440 V, 79 kA at 500 V, and 4.25 kA at 690 V — the high 187 kA at 240 V makes it suitable for high-fault utility or transformer secondary applications where fault currents can exceed 100 kA.
Above 50 °C it derates: 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. For a panel that runs warm — say 55 °C inside a NEMA 12 enclosure — the breaker is good for 96.25 A continuous without nuisance tripping.
Release, auxiliaries, and accessories
Overcurrent protection is handled by the ETU320 electronic trip unit — a basic fixed-time curve with no communication or ground-fault monitoring. A mechanical trip indicator is present. Maximum power loss is 12.5 W.