What this MCCB delivers
The Siemens SENTRON 3VM1110-4ED32-0AA0 is a 3-pole molded case circuit breaker (MCCB) in the 3VM line, designed for line protection. It carries a 1 000 A frame with a TM210 thermal-magnetic release — meaning the trip curve is fixed, no interchangeable trip units. At 40 °C it's rated 100 A continuous, and it holds that rating through 50 °C before starting to derate: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, 91 A at 70 °C. For a panel that runs warm, that derating curve tells you exactly where you lose headroom.
Breaking capacity — what it means for fault duty
Breaking capacity is voltage-dependent: 121 kA at 240 V, 76 kA at 415 V, 53 kA at 440 V, 12 kA at 500 V. At 415 V that 76 kA covers most industrial distribution transformer secondary faults without cascading upstream. At 500 V the 12 kA figure drops sharply — verify the available fault current if your system runs 480/500 V. Insulation voltage is rated 800 V, so the breaker itself is built for 690 V class systems.
Physical fit and panel integration
Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. The 3-pole width is standard for a 100 A frame MCCB — it fits a typical 3 x 25 mm DIN cutout or bolted panel mount. Front IP40 protection class means it's protected against tools and small wires but not sealed against washdown; keep it inside the enclosure, not on the door. Power loss is 25 W maximum, so factor that into enclosure thermal calculations if you're packing multiple breakers in a small cabinet.