What this MCCB carries and where it fits
The Siemens SENTRON 3VA1080-2ED42-0JC0 is a 4-pole molded case circuit breaker rated 80 A at 40 °C, designed for line protection in distribution panels. Its breaking capacity runs 52.5 kA at 240 V, 32 kA at 415 V, and 13.6 kA at 440 V — numbers that tell you it handles high-fault-current mains feeders, not just subfeeders. The 800 V rated insulation voltage confirms it is built for 690 V industrial systems with margin. At 70 °C ambient the continuous rating derates to 74 A; the thermal curve is published, so no guessing on a hot panel day.
Auxiliaries and release built in
This breaker ships with a shunt trip (STL) release and two HQ auxiliary switches factory-installed. The shunt trip lets a remote safety relay or PLC command an immediate open; the aux switches report breaker position back to the control system. No field retrofit required — the auxiliaries are already on the nameplate.
Mounting and panel fit
Footprint is 101.6 mm wide by 130 mm tall by 70 mm deep — standard SENTRON 3VA form factor for a 4-pole frame. Bolts into a distribution panel or switchboard; the depth stays under 3 inches, so it clears shallow backpanels without a sub-panel extension.