What this MCCB is and what it carries
The Siemens 3VA1116-6FE46-0AA0 is a SENTRON 3VA1 molded case circuit breaker rated for 80 A continuous, 4-pole, with a TM220 thermal-magnetic release. It is designed for line protection — meaning it sits at the feeder or main distribution point in a panel, not downstream on a specific motor or device. The TM220 release gives a fixed thermal curve and fixed magnetic trip, no adjustment dials, so what you order is what you get for coordination studies.
Breaking capacity — the real selectivity number
This breaker delivers 220 kA interrupting capacity at 240 V, 154 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. That 220 kA at 240 V is a high-end figure — it means this MCCB can sit upstream of a large transformer or a high-fault bus without needing a current-limiting fuse ahead of it. The 17 kA at 690 V still covers most industrial distribution. The rated insulation voltage is 800 V, so the internal clearances are sized for 690 V line-to-line systems with margin.
Thermal derating — don't size by the 80 A alone
The 80 A rating holds at 40 °C ambient. At 55 °C it derates to 158 A, at 65 °C to 153 A, and at 70 °C to 150 A. That is a 6.25% drop from 40 °C to 70 °C — mild, but real if the breaker lives in a hot enclosure next to other heat sources. Power loss at full load is 38 W, which is modest for a 4-pole 80 A frame; it keeps the internal temperature rise manageable in a standard IP40 front panel.
Dimensions and panel fit
The breaker measures 130 mm high, 101.6 mm wide, and 70 mm deep. That 101.6 mm width is exactly 4 inches — a standard MCCB frame width for a 4-pole unit, meaning it fits the common panel cutout and bus-bar spacing used across the SENTRON 3VA line. The 70 mm depth is shallow enough to clear a standard 200 mm deep enclosure backplate with room for wiring gutters.
What it does not include
This variant has no undervoltage release, no trip indicator, no voltage trigger, no communication function, and no ground-fault monitoring. It is a straight thermal-magnetic line-protection breaker — no auxiliaries, no remote trip, no metering. If the BOM calls for those, you need a different suffix in the 3VA1 family.