MCCB with ETU350 — line protection for high-fault panels
The Siemens SENTRON 3VA2010-6HN32-0JL0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection with a continuous current Iu of 100 A at 40 °C. Its interrupting capacity reaches 242 kA at 240 V and 187 kA at 415 V — figures that cover most industrial service-entrance and distribution panels where fault currents run high. The ETU350 electronic trip unit provides adjustable overload and short-circuit protection curves, making this breaker suitable for selective coordination studies in IEC 60947-2 installations.
Dimensions and panel fit
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep — a footprint that fits standard SENTRON 3VA panel cutouts. The 105 mm width is the same as other 3VA2 frame sizes, so a panel designed for a 3VA1010-2ED32-0JA0 will accept this unit without re-drilling or busbar rework, provided the incoming cable lugs and busbar spacing match the 100 A rating.
Auxiliary and trip accessories
Factory-fitted with a shunt trip release (STL) and an auxiliary contact block comprising 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch HQ. The integrated auxiliary trip order code is 3VA9688-0BL32; the supplied basic switch is 3VA2010-6HN32-0AA0. This configuration supports remote tripping and status feedback without additional wiring modifications.
Thermal derating and operating limits
Rated continuous current holds at 100 A from 40 °C up to 50 °C. Above 50 °C, derate linearly: 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. Maximum power loss is 13.5 W. Storage range spans -40 °C to 80 °C; operating ambient is -25 °C to 70 °C. These limits govern panel layout and ventilation requirements — a tightly packed enclosure may need forced airflow to stay below 50 °C at full load.