SENTRON 3VA2010-5KP32-0HL0 — 100 A MCCB with ETU850, active production
The ETU850 electronic trip unit provides adjustable protection curves and integrates a communication function for remote monitoring or integration into a higher-level energy management system. The breaker also includes a shunt trip (STL) auxiliary release and a full auxiliary contact block: 2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ. Breaking capacity is voltage-dependent: 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 3.4 kA at 690 V. This makes it suitable for high-fault-current installations at common distribution voltages, with the 690 V figure indicating a reduced but still serviceable interruption capability for that voltage class. Rated insulation voltage Ui is 800 V. The breaker carries a mechanical endurance of 20,000 operations. It includes a trip indicator and a voltage trigger function.
Current derating and thermal limits
The 100 A rating holds from 40 °C through 50 °C ambient. Derating begins at 55 °C (96.25 A), stepping down to 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. The maximum operating temperature is 70 °C; minimum is -25 °C. Storage range is -40 °C to 80 °C. Maximum power loss is 13.5 W. Panel builders should account for this dissipation in enclosure thermal calculations, especially when grouping multiple breakers.
Physical footprint and panel fit
Dimensions are 181 mm height, 105 mm width, 86 mm depth. This is a standard 3-pole SENTRON 3VA frame size; it mounts on a DIN rail or can be screw-fixed to a backplate in a distribution panel. The depth of 86 mm is shallow enough for most 200 mm-deep enclosures, leaving wiring space in front.
Auxiliary components and wiring note
The breaker ships with a shunt trip (STL) auxiliary release. The base switch internal subcomponent is 3VA2010-5KP32-0AA0; the integrated auxiliary trip subcomponent is 3VA9688-0BL30. No undervoltage release or phase failure detection is included on this variant. No ground fault monitoring version is fitted.