SENTRON 3VA1080-3ED32-0AA0 — 80 A MCCB, 3-pole, TM210 release
The Siemens 3VA1080-3ED32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 80 A at 40 °C with a 3-pole configuration and a TM210 thermal-magnetic overcurrent release. Breaking capacity scales with system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V. It is a straightforward, serviceable breaker for standard overload and short-circuit protection where selectivity is set by frame size and cable impedance.
Rated 80 A from 40 °C through 50 °C, then derates to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. In a sealed, uncooled enclosure at 50 °C ambient, the breaker still delivers its full 80 A — no need to oversize the frame for a warm panel. Maximum power loss is 19.2 W. In a multi-breaker panel, that thermal load adds up — account for it in the enclosure ventilation calculation, especially if the panel is loaded to 80 % or more.
Environmental and compliance range
The storage minimum is the real boundary for cold warehouses or unheated site containers — the breaker can sit through a -40 °C winter night and still start up when the panel is energized. Front-side protection class is IP40 — suitable for general indoor panel use where no washdown or dust ingress is expected.