The Siemens SENTRON 3VA2110-5HL32-0CL0 is a 3-pole molded case circuit breaker rated for 100 A continuous current at 40 °C, with an ETU320 electronic trip unit configured for line protection. Breaking capacity reaches 187 kA at 240 V and 121 kA at 415 V and 440 V, dropping to 79 kA at 500 V and 4.25 kA at 690 V — the 690 V figure is the one that governs most 480/600 V panel SCCR calculations, so verify your available fault current against that curve before committing the BOM line. The frame is sized for 100 A continuous without derating up to 50 °C; 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. It mounts in a standard panel footprint — 105 mm wide, 181 mm tall, 86 mm deep — and carries an undervoltage release (UVR) plus a configurable auxiliary contact block: 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ version).
The ETU320 electronic trip unit provides line protection (overload and short-circuit) without phase-failure detection or ground-fault monitoring. No communication function or voltage trigger is built in. The trip indicator is present, so a visual check confirms the breaker has opened on fault without needing to reset the handle.