What this MCCB carries and where it fits
The Siemens 3VA1110-6MH36-0HC0 is a SENTRON molded case circuit breaker (MCCB) built for starter protection — meaning it's sized to protect motor starters and their branch circuits, not just general distribution. Three poles, rated 100 A continuously at 40 °C, and it holds that same 100 A rating through 50 °C before derating begins (98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, 91 A at 70 °C). That thermal stability matters when the breaker lives inside a warm motor control center. Breaking capacity is the headline: 220 kA at 240 V AC, 154 kA at 415 V, 121 kA at 440 V. That's high-interrupting — it handles fault currents from large transformers or parallel feeders without cascading upstream. At 500 V and 690 V it drops to 7.5 kA, so verify the available fault current at your system voltage before committing the BOM line. Rated insulation voltage is 800 V, giving headroom for 690 V systems. Power loss maxes at 25 W — a number to check for thermal coordination inside a sealed enclosure.
Integrated trip and auxiliary hardware
This variant ships with a shunt trip release (STL) for remote tripping and two HQ auxiliary switches for status feedback to a PLC or indicator lamp. The basic switch core is order code 3VA11106MH360AA0 — the factory-assembled internal mechanism. No undervoltage release, no ground-fault monitoring, no communication module on this build. Dimensions: 130 mm high, 76.2 mm wide, 70 mm deep. The 3-pole width is standard for a 100 A frame — fits existing SENTRON mounting bases and busbar adapters without panel rework if you're swapping from a same-frame 3VA1. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. The trip indicator is not fitted on this order code — if local code requires a visible trip flag, confirm with the panel builder before installation.