What this MCCB carries and where it fits
The Siemens 3VA1010-3ED36-0HC0 is a SENTRON molded case circuit breaker (MCCB) rated 100 A at 40 °C, 3-pole, designed for line protection in distribution panels. Its breaking capacity steps from 75.6 kA at 240 V down to 7.5 kA at 690 V, so the voltage at the fault point determines whether this breaker clears a high-fault scenario without upstream coordination. The 70 mm depth and 76.2 mm width fit standard DIN-rail or panel-mount enclosures — check the back panel clearance before committing the gland plate layout.
Thermal derating and auxiliary fit
The 100 A rating holds flat from 40 °C to 50 °C, then derates to 91 A at 70 °C. If the panel ambient runs hot — say inside a non-ventilated enclosure near transformers — use the 70 °C column (91 A) for sizing, not the catalog headline. The breaker ships with a shunt trip (STL) and two auxiliary switches HQ already installed, so no field retrofit is needed for remote trip or status feedback. Rated insulation voltage is 800 V, giving headroom on 690 V systems.