The Siemens SENTRON 3VA1080-4ED46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated at 80 A continuous current with a TM210 thermal-magnetic release. It handles fault currents up to 121 kA at 240 V, dropping to 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 121 kA figure at 240 V is the headline interrupting capacity — it clears a bolted fault at that level without welding the contacts or rupturing the case, which matters for high-fault utility feeds or transformer secondaries where available short-circuit current is high.
Thermal derating and release
The 80 A rating holds up to 50 °C ambient; above that it derates linearly to 74 A at 70 °C. That means a panel builder running this breaker in a 60 °C enclosure (common near a drive or transformer) should plan for 77 A max continuous load — not the full 80 A. The TM210 release has an adjustable magnetic trip (li) up to 800 A, so you can tune the instantaneous pickup for motor inrush or cable protection without swapping the breaker.
Physical fit and panel integration
Dimensions are 130 mm high, 101.6 mm wide, 70 mm deep. The 70 mm depth is shallow enough to fit a standard 200 mm deep enclosure with room for gland plates and wiring channels. Front IP40 means it is protected against tools and wires >1 mm — fine for a clean indoor panel, but not washdown. No communication function on this variant, no motor drive, no ground-fault monitoring — it is a straight line-protection MCCB.