What this 80 A MCCB is for
Breaking capacity hits 75.6 kA at 240 V and 52.5 kA at 415 V, so it can interrupt high-fault currents upstream of a subpanel or downstream of a transformer without the arc re-striking. The 3 auxiliary switches HQ give remote status feedback for PLC or SCADA inputs.
This MCCB's interrupting rating drops as system voltage rises — 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V.
Above that, the thermal trip element starts to derate: 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, 72 A at 70 °C.
Mechanical footprint and panel fit
The 3VA1080-3ED36-0AD0 measures 130 mm high, 76.2 mm wide, and 70 mm deep. The 3 auxiliary switches HQ are built in; no separate aux module needed.