Siemens 3VA1116-6FF46-0AA0 — 80 A 4-Pole MCCB with TM240 Release
Breaking capacity varies significantly with system voltage: 220 kA 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 makes this a strong choice for high-fault service-entrance applications on 240 V delta or 277/480 V wye systems where the available fault current is substantial. The TM240 release means the thermal element is calibrated for a 240 A frame — the breaker itself is rated 80 A, so the trip unit is set for that lower continuous current. This gives you flexibility: the same frame size can be adjusted down for different load requirements without changing the entire breaker.
At 55 °C it carries 158 A, at 60 °C it's 155 A, at 65 °C it's 153 A, and at 70 °C it's 150 A. That's a shallow derating curve, meaning the breaker holds up well in warm enclosures or panels near heat sources.
Dimensions are 70 mm depth, 101.6 mm width, 130 mm height — a standard 4-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures. The width at roughly 4 inches (101.6 mm) matches the typical 4-pole spacing in a distribution board.