The Siemens SENTRON 3VA2010-5HL36-0KL0 is a 3-pole molded case circuit breaker rated for 100 A continuous current, with an interrupting capacity of 187 kA at 240 V and 121 kA at 415 V. Those numbers mean it can clear a bolted fault on a large transformer secondary or a high-capacity bus without the arc re-striking — the kind of SCCR headroom you need for a main breaker in a 480 V industrial panel. A shunt trip (STL) is built in for remote emergency-off or fire-alarm cut.
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.
Auxiliary contacts and alarm switching
This variant ships with two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ type). That gives you a dedicated signal for remote status — breaker open/closed, trip event, and a separate alarm contact for SCADA or a local beacon. If you need UVR or ground-fault monitoring, you are looking at a different suffix.
That width is standard for a 3-pole 100 A frame in the 3VA platform — it fits the same mounting footprint as other 3VA100/160 frame breakers. The depth of 86 mm includes the handle and the shunt trip projection; allow clearance for wiring and the auxiliary contact block on the side.