MCCB for line protection — 80 A, 4-pole, high interrupting capacity
Interrupting capacity hits 75.6 kA at 240 V AC, 52.5 kA at 415 V, and 32 kA at 440 V, with a floor of 7.5 kA at 500 V and 690 V. That gives you SCCR headroom for most distribution and motor branch circuits tied to 480 V class gear. The basic switch assembly is order code 3VA10803ED420AA0.
Thermal performance and panel integration
At 70 °C operating maximum and 80 °C storage, it takes the radiant heat common in steel-mill auxiliary panels or near variable-frequency drive cabinets. With four poles and a shunt trip, wiring the control circuit for remote trip is straightforward: the STL coil needs a separate 24 V or 110 V supply (not included), and the auxiliary contacts share the same terminal block for status feedback.