The Siemens SENTRON 3VA1110-4EF36-0CH0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current (Iu) at 40 °C through 50 °C, with a slight derating curve above that — 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C. That thermal profile means you can run it near its nameplate in most standard 40 °C panels without headroom games; if your enclosure is cooking past 55 °C, you lose about 6–10 A per step. The breaking capacity is the headline number here: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. That 75.6 kA at 415 V is the one that matters for most European and Asian industrial lines — it clears a 415 V fault well above typical utility transformer ratings, so you get full selectivity downstream without cascading upstream.
What the ratings mean for fit
Rated insulation voltage Ui is 800 V, so the breaker is built for 690 V line-to-line systems with margin. The overcurrent release is a TM240 — thermal-magnetic, fixed at 240 A short-circuit pickup. That's a standard line-protection curve, not a motor-protection or selective-coordination curve. If you need a different release, this variant is fixed; the 3VA family has interchangeable trip units on other order codes, but this one ships as-built. The auxiliary contact package is 2 auxiliary switches plus 1 trip alarm switch (HQ designation), which gives you two independent status signals plus a dedicated alarm for the tripped state — useful for remote monitoring or PLC inputs. The undervoltage release (UVR) is built in; it drops the breaker on loss of control voltage, which is common in emergency-stop chains or undervoltage protection schemes.
Panel fit and mounting
Dimensions: 130 mm high, 76.2 mm wide, 70 mm deep. Width fits standard 3-pole MCCB footprint. Depth suits shallow enclosures with wiring gutters.