The Siemens SENTRON 3VA2110-5HN36-0KC0 is a 3-pole molded case circuit breaker rated for 100 A continuous at 40 °C, with a 187 kA interrupting capacity at 240 VAC. It is designed for line protection in distribution panels and switchboards, carrying a shunt trip (STL) and two auxiliary switches HQ built in. The interrupting curve drops to 121 kA at 415 V and 75.6 kA at 500 V, with 3.7 kA at 690 V — so the high-fault rating at 240 V is the headline, but the 415 V figure is what governs most European industrial panels.
What the interrupting ratings mean for your panel
The 187 kA at 240 V is a very high interrupting rating — it tells you this breaker can safely clear a bolted fault on a high-capacity transformer secondary without rupturing. At 415 V the 121 kA still covers most industrial service-entrance applications. The sharp drop to 3.7 kA at 690 V is typical for a 100 A frame: at that voltage the arc extinction is harder, so the breaker is really a 690 V device for lower-fault locations, not a main. If your SCCR study shows available fault current above 121 kA at 415 V, you need a current-limiting upstream device or a different frame.
Dimensions and panel fit
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep. That 86 mm depth is the body only — add clearance for the shunt trip wiring and the auxiliary switch terminals on the side. It mounts on a standard DIN rail or direct-panel screw pattern; the 105 mm width occupies three pole spaces on a typical 35 mm DIN rail. Verify the gland-plate knockout matches before cutting the backplate.
Built-in accessories
The breaker ships with a shunt trip (STL) for remote tripping and two auxiliary switches HQ for status feedback to a PLC or indicator lamp. There is no undervoltage release and no ground-fault monitoring module on this variant. The shunt trip coil draws power only during the trip event — no continuous hold current. The auxiliary switches are rated for the control circuit voltage; verify the switching capacity against your 24 VDC or 120 VAC load before wiring.
Temperature derating and power loss
The 100 A rating holds flat from 40 °C up to 70 °C ambient — no derating needed in a warm enclosure. Maximum power loss is 10 W at rated current, which is modest for a 100 A frame; you can pack several in a row without forced ventilation. Storage range is -40 °C to 80 °C, operating range -25 °C to 70 °C.