The Siemens SENTRON 3VA1110-5EE32-0KC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection duty. It carries a continuous current of 100 A up to 50 °C, then derates to 90 A at 70 °C — so in a warm panel you lose 10 A off the top. The interrupting ratings are the headline: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. That 187 kA figure at 240 V is high enough for most secondary-side fault duty; the 17 kA at 690 V tells you it's still usable on 690 V systems where SCCR is modest.
Thermal-magnetic release and auxiliary fit
The overcurrent release is a TM220 — thermal-magnetic, fixed-trip, the standard workhorse for line protection. No ground-fault monitoring, no communication module, no phase-failure detection. The auxiliary contact version is 2 auxiliary switches HQ (high-qualified), and the integrated auxiliary trip is a shunt trip (STL) with order code 3VA9688-0BL33. If you need undervoltage release, this unit doesn't carry one; that's a separate variant.
Physical fit and environmental limits
Dimensions: 130 mm high, 76.2 mm wide, 70 mm deep. Front protection is IP40 — fine for a dry panel, not for washdown. Storage range -40 °C to 80 °C; operating range -25 °C to 70 °C. The 70 mm depth is standard for this frame size; it fits the usual DIN-rail or screw-mount footprint without surprises.