What this 3VA1080-3ED36-0BC0 brings to the panel
The Siemens 3VA1080-3ED36-0BC0 is a 3-pole SENTRON molded case circuit breaker rated for 80 A continuous current (Iu) with the TM210 thermal-magnetic release — the fixed-trip version, so no field adjustment on the magnetic pickup. It's built for line protection, meaning it sits upstream protecting feeder cables and downstream distribution, not a specific motor load. The 800 V rated insulation voltage (Ui) tells you it can live in 690 V panels with comfortable margin. Breaking capacity is where this MCCB earns its keep: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and still 7.5 kA at 690 V. At 415 V that's well into the high-fault range for industrial distribution — it'll clear a bolted fault on a 2 MVA transformer secondary without drama. The 80 A rating holds flat from 40 °C through 50 °C (no derating needed in a warm panel), then tapers gently to 72 A at 70 °C.
Fit and integration — DIN rail or panel mount
Footprint is 76.2 mm wide (about 4.5 standard DIN-modules), 130 mm tall, 70 mm deep — it'll drop onto a DIN rail or bolt into a mounting plate. The 3-pole block has the undervoltage release (UVR) already fitted from the factory, plus two HQ auxiliary switches for status feedback to the PLC or annunciator panel. No communication module, no ground-fault monitoring — this is a straightforward thermal-magnetic breaker, not a smart meter. Front protection is IP40 — fine inside a closed enclosure, not for washdown areas. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. The mechanical endurance is rated at 15,000 operations, which is typical for an MCCB in a distribution role where it cycles rarely.