What this MCCB carries and where it fits
The Siemens SENTRON 3VA1110-3EF36-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection in distribution panels. It carries 100 A continuously at 40 °C ambient, with a breaking capacity of 75.6 kA at 240 V AC — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream. The 800 V rated insulation voltage gives headroom for 480 V or 600 V class systems. An integrated undervoltage release lets a safety PLC or E-stop chain drop the breaker directly, which saves an external shunt-trip module and the wiring to it.
Breaking capacity across voltages — selectivity planning
This MCCB's interrupting rating drops as voltage rises: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V (–). For a 480 V panel fed from a 500 kVA transformer (typical available fault around 25 kA), the 32 kA at 440 V rating gives comfortable margin — but on a 600 V system the 11.9 kA limit means you need to verify the available fault current stays under that. The 3-pole frame fits standard 3-phase feeds; the 70 mm depth and 76.2 mm width match the SENTRON 3VA family footprint, so a panel laid out for a 3VA1 frame accepts this unit without re-drilling the mounting plate.
Thermal derating and power loss
The breaker holds 100 A from 40 °C through 50 °C ambient (–). Above that it derates linearly: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C (–). Maximum power loss is 27.5 W — negligible for panel heat budgeting unless you're stacking a dozen of these in a sealed enclosure. Operating range is -25 °C to 70 °C; storage from -40 °C to 80 °C.