The Siemens SENTRON 3VA2110-5HL36-0HH0 is a 3-pole molded case circuit breaker rated for 100 A continuous current at 40 °C, with an ETU320 electronic overcurrent release and an integrated shunt trip (STL). That is a practical detail for a panel builder who wants remote indication without adding a separate auxiliary block.
Above that, the derating curve is published: 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. That is the number to use for NEC ampacity calculations, not the und derated nameplate.
Interrupting ratings across voltage classes
The 187 kA at 240 V AC is the headline figure, but the more relevant number for a 480 V distribution panel is the 121 kA at 440 V. At 500 V it still holds 79 kA; at 690 V it drops to 4.25 kA. For a 400/415 V system with a transformer secondary capable of 100 kA, this breaker has the interrupting margin.
Dimensions are 181 mm height, 105 mm width, 86 mm depth. The 86 mm depth includes the arc-chamber protrusion behind the mounting plane; verify clearance against the enclosure back wall, especially if a rear-mounted bus bar or cable duct is present.
Integrated trip unit and release options
The shunt trip (STL) allows remote tripping from an emergency-stop circuit or a supervisory system. The breaker also ships with a voltage trigger (undervoltage release is not fitted on this variant). The basic switch supplied is order code 3VA2110-5HL36-0AA0; the integrated auxiliary trip module is 3VA9688-0BL30. These are the service parts if the auxiliary contact block needs replacement.
Environmental limits
Maximum power dissipation is 10 W at rated current — a modest heat load for a ventilated enclosure, but worth accounting for in a sealed, high-density panel with multiple breakers.