SENTRON 3VA2010-5HN36-0DH0 — 100 A MCCB with Undervoltage Release
The Siemens SENTRON 3VA2010-5HN36-0DH0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to the 70 °C operating maximum. The 100 A rating holds flat at 100 A at every 5 °C step from 40 °C through 70 °C, so in a warm panel or next to other heat sources, you keep full ampacity. Breaking capacity runs 187 kA at 240 V AC, drops to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 3 kA at 690 V.
Built-in Undervoltage Release and Auxiliary Switching
The UVR is factory-fitted as the auxiliary release type, so there is no separate module to wire in. The trip alarm signals a remote PLC or annunciator when the breaker trips on fault, not just on manual open. That is useful for a maintenance team trying to distinguish a nuisance trip from a deliberate disconnect.
The 105 mm width matches the standard 3-pole cutout in most SENTRON panelboards and distribution boards. Rated power loss is 16 W maximum — a modest heat load for a 100 A breaker, but in a densely packed enclosure with multiple breakers side by side, the cumulative dissipation should be checked against the panel's thermal budget.
The 3VA2010-5HN36-0DH0 is a line-protection design (not motor-protection), so it is intended for feeder and distribution duty, not for direct motor overload protection. For motor circuits, pair it with a separate overload relay.