What this MCCB does and where it fits
The Siemens 3VM1110-3EE32-0AA0 is a SENTRON 3-pole molded case circuit breaker (MCCB) rated for line protection — the primary job is to protect cable and bus from overload and short-circuit in a distribution panel. It carries a TM220 thermal-magnetic trip unit, meaning the thermal element handles overloads and the magnetic element handles short-circuits, with no electronic adjustment or communication module onboard. The 100 A rating holds across 40 °C to 50 °C ambient, then derates to 91 A at 70 °C — useful to know if this breaker sits in a hot enclosure or next to other heat sources.
Breaking capacity — what the voltage columns tell you
The interrupting rating drops as system voltage rises: 76 kA at 240 VAC, 53 kA at 415 VAC, 32 kA at 440 VAC, and 12 kA at 500 VAC. For a 480 V panel (common in North America) the relevant figure is the 440 V rating at 32 kA — that is the available fault current this breaker can safely clear at that voltage level. The insulation voltage is rated 800 V, so the breaker itself is insulated for higher-voltage systems but the breaking capacity is what governs the application. No undervoltage release or shunt trip is built in; this is a plain thermal-magnetic breaker with no auxiliary functions.
Physical fit and panel integration
The breaker measures 130 mm high, 76.2 mm wide (3 inches), and 70 mm deep. It mounts on a DIN rail or directly to a panel backplate via the standard MCCB footprint. The front face carries IP40 protection — splash protection is not rated, so keep it inside a closed enclosure. Three poles, no ground-fault monitoring, no communication module, no trip indicator on the front. Power loss at full rated current is 25 W maximum, which matters for thermal budgeting inside a sealed cabinet.