This 3VA2110-5HL36-0HL0 is a Siemens SENTRON molded case circuit breaker (MCCB) — 3-pole, 100 A continuous rating, designed for line protection. That 100 A holds flat from 40 °C all the way up to 70 °C ambient, so no derating headache in a warm panel. Breaking capacity is the headline: 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA at 240 V means it can clear a massive fault on a low-voltage distribution bus without the upstream gear needing to help — useful for high-fault panels or transformer secondaries. It comes with a shunt trip (STL) auxiliary release and a complement of auxiliary switches: 2 auxiliary + 1 trip alarm + 1 electrical alarm switch (HQ). That gives you remote trip capability and status feedback for a PLC or annunciator.
Panel Fit
Dimensions: 86 mm deep, 105 mm wide, 181 mm tall. That 105 mm width for a 3-pole frame is standard for this class — fits a typical MCCB footprint in a distribution panel. Power loss is rated at 10 W maximum, so heat dissipation is manageable in a ventilated enclosure.