What the ratings mean for fit
The Siemens SENTRON 3VA1110-6EF36-0KH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection — the primary role is protecting cable and bus from overcurrent and short-circuit faults, not motor or generator protection. Its continuous current rating is 100 A up to 50 °C ambient, derating to 91 A at 70 °C. That means in a warm panel (say 50 °C) you can load it to the full 100 A; above that, you follow the derating curve. The interrupting ratings are the headline: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. These are very high fault-current capabilities — the 220 kA figure at 240 V means it can safely clear a fault on a high-capacity transformer secondary without needing a current-limiting fuse upstream. At 690 V the 17 kA rating is still substantial for most industrial distribution. The insulation voltage is rated 800 V, so it's suitable for 690 V systems with margin. The breaker includes a shunt trip (STL) auxiliary release and provisions for two auxiliary switches plus one trip alarm switch (HQ). The shunt trip allows remote tripping from a PLC or emergency-stop circuit. The trip indicator and voltage trigger are present; undervoltage release and ground-fault monitoring are not fitted on this variant. No communication function is built in — this is a standalone MCCB, not a power-metering or networked unit. Maximum power loss is 25 W, which matters for thermal budgeting inside a sealed enclosure.
Panel integration and dimensions
The 3VA1110-6EF36-0KH0 measures 130 mm high, 76.2 mm wide, and 70 mm deep. The 76.2 mm width (3 inches) is standard for a 3-pole MCCB in this frame size — it occupies three 25 mm (1-inch) pole positions on a DIN rail or panel-mount plate. Depth of 70 mm is shallow enough to fit in most 200 mm deep enclosures with room for wiring behind. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The 25 W heat dissipation at full load should be factored into enclosure cooling calculations.