The 4800 A frame size is the mechanical envelope that carries the interrupting mechanism — the continuous current rating is 400 A across the full ambient range from 40 °C to 70 °C, meaning no derating is needed for a warm panel environment up to that ceiling. The 330 kA breaking capacity at 240 V and 242 kA at 415 V means this breaker can safely interrupt a fault of that magnitude without welding contacts or cascading failure upstream — critical for high-fault installations like transformer secondaries or large motor control centers.
Integration and panel fit
The 3VA2440-7HN32-0AH0 measures 248 mm high by 138 mm wide by 110 mm deep. The width of 138 mm means it occupies three pole spaces on a standard DIN-rail or bolted bus system; verify the bus bar spacing matches the 3-pole footprint before cutting the backplate.
Short-time withstand and trip indication
The trip indicator is present, so a visual flag confirms the breaker has opened on a fault rather than being manually switched off — saves a troubleshooting trip to the panel.