What this MCCB carries and where it fits
The Siemens SENTRON 3VA1110-5EE36-0BF0 is a 3-pole molded case circuit breaker rated for 100 A continuous current at up to 70 °C ambient, with a TM220 thermal-magnetic release. Its interrupting rating hits 187 kA at 240 V and still clears 121 kA at 415 V — that's serious fault-current headroom for a 100 A frame, meaning it can sit upstream of a distribution board without worrying about the utility transformer's let-through. This is a line-protection version — no voltage trigger, no ground-fault monitoring, no communication module. What you get is a clean thermal-magnetic trip curve and an undervoltage release (UVR) for remote shunt-trip or safety-circuit drop. The auxiliary contact set is one auxiliary switch plus one trip-alarm switch HQ, which covers status feedback and fault annunciation without an add-on module.
Interrupting capacity — what the numbers mean for panel coordination
The interrupting ratings drop from 187 kA at 240 V to 121 kA at 415 V, then to 76 kA at 440 V, and settle at 17 kA for both 500 V and 690 V. That steep curve tells you this breaker is designed for 240 V and 415 V distribution — at 690 V it still clears 17 kA, which is adequate for most industrial motor-control centers but not for high-fault utility tie-ins at that voltage. For DC applications, the manual (linked in the last chapter of the 3VA device manual) governs; the max rated DC operational voltage is 500 V.
Thermal derating and ambient limits
The breaker carries its full 100 A from 40 °C through 50 °C. At 55 °C it derates to 98 A, at 60 °C to 96 A, at 65 °C to 94 A, and at 70 °C to 91 A. That's a gentle slope — you lose only 9 % at the top of the operating range. The operating ambient floor is -25 °C, storage range is -40 °C to 80 °C. The front-face IP40 rating means it's fine in a clean panel but not washdown-rated.