80 A MCCB with TM210 release — what the ratings mean for fit
The Siemens 3VA1080-3ED32-0BH0 is a SENTRON molded case circuit breaker (MCCB) rated 80 A continuous current (Iu) with a TM210 thermal-magnetic overcurrent release. The 80 A rating holds flat from 40 °C through 50 °C; above that it derates to 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. That means in a warm enclosure — say a non-ventilated panel near a drive — you lose about 10 % of the headroom by the time ambient hits 70 °C. Interrupting capacity is 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V. For a 480 V distribution panel that's the 32 kA figure — enough for most secondary-side service entrances, but check your available fault current at the panelboard if you're feeding from a large transformer. Three poles, line protection version, no communication module, no phase-failure detection, no ground-fault monitoring. The auxiliary contact block is factory-fitted: 2 auxiliary switches plus 1 trip alarm switch (HQ type). An undervoltage release (UVR) is built in — that's the entry. If the control voltage drops, the breaker opens; useful for emergency-stop circuits that need a loss-of-voltage trip. Mechanical endurance is 15 000 operations. That's typical for a panelboard feeder breaker that cycles a few times a year; not a high-duty machine-tool disconnect. The front face carries a trip indicator so a walk-by can see which breaker opened without pulling the door.
Panel fit and mounting
Dimensions: 130 mm high, 76.2 mm wide, 70 mm deep. That 76.2 mm width is three 25.4 mm pole spaces — standard for a 3-pole MCCB on a DIN rail or panel-mount footprint. The 70 mm depth means it clears a 100 mm deep enclosure with room for wiring gutters. IP40 on the front; the body is not sealed for washdown, so keep it in a dry indoor panel. The integrated auxiliary trip is order code 3VA9608-0BB11 — that's the factory-fitted alarm switch, not a field-installable kit. If you need a different auxiliary configuration, order the base breaker without auxiliaries and add the correct 3VA9 accessory separately.