The Siemens 3VA1110-5EE32-0AC0 is a SENTRON 3-pole molded case circuit breaker rated 100 A at 40 °C with a TM220 thermal-magnetic release, designed for line protection. Its breaking capacity reaches 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — numbers that tell you this breaker handles high-fault-current scenarios typical in industrial distribution without cascading upstream.
Ratings and what they mean for your panel
Rated current holds flat at 100 A from 40 °C through 50 °C, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. If your enclosure runs hot — say a packed MCC section — that derating curve is what governs real-world ampacity, not the nameplate 100 A. The TM220 release combines a thermal bimetal for overload protection and a magnetic coil for short-circuit response; it's the standard choice for feeder and branch-circuit protection where you don't need electronic adjustability. Rated insulation voltage is 800 V, so the breaker's internal clearances and creepage are sized for 690 V systems with margin. Maximum power loss at rated current is 25 W — a number to factor into enclosure thermal calculations if you're stacking several breakers in a closed panel.
Panel fit and integration
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that drops into SENTRON mounting bases and panel cutouts. The breaker ships with two HQ auxiliary switches built in, so you get status feedback without adding external contact blocks. No undervoltage release, no ground-fault monitoring, no communication function on this variant — it's a straight thermal-magnetic line-protection device.