What it is and what it does
The Siemens SENTRON 3VA2010-6HN32-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current (Iu) at 40 °C, with a breaking capacity of 242 kA at 240 V and 187 kA at 415 V — numbers that tell you this breaker handles high-fault-current industrial feeds without cascading upstream. It's fitted with an ETU350 electronic trip unit and an undervoltage release (UVR), so it's built for line protection where you need coordinated fault isolation and undervoltage drop-out in one package. Rated insulation voltage is 800 V, and the breaker is rated for 20 000 latching endurance cycles — a solid duty-cycle for a panel that sees regular switching.
Sourcing and lifecycle reality
The base switch assembly is order code 3VA2010-6HN32-0AA0, and the integrated auxiliary trip is 3VA9608-0BB25 — useful if you're stocking spares or rebuilding a failed unit.
Panel fit and thermal derating
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — a standard MCCB footprint that drops into most SENTRON panel-mounting bases without rework. At 40 °C it carries the full 100 A; at 55 °C it derates to 96.25 A, and at 70 °C to 85 A. Plan your enclosure ventilation if the ambient runs hot — the max power loss is 16 W. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. No auxiliary contacts or communication module on this variant — it's a straight line-protection breaker with undervoltage release only.