MCCB for line protection — 80 A continuous, 75.6 kA interrupting
Interrupting capacity hits 75.6 kA at 240 V AC, dropping to 52.5 kA at 415 V and 32 kA at 440 V; at 500 V and 690 V it holds 7.5 kA. That's a strong SCCR for 240 V service, but at higher voltages the fault-current ceiling is lower — check your available fault current before specifying. A shunt trip (STL) release is built in, so remote tripping is wired out of the box; undervoltage release is not fitted on this variant.
Maximum power loss is 19.2 W. In a sealed enclosure that adds up — account for it in the thermal budget alongside adjacent devices. The 80 A rating holds flat from 40 °C through 50 °C; above that it drops 1–2 A per 5 °C step. If the panel ambient sits at 55 °C, the breaker is good for 78 A; at 65 °C, 75 A. The trip indicator (mechanical flag) gives a quick visual on tripped state without needing to reset the handle — useful during fault isolation.