The Schneider Electric SOL80F3E400 is a 3-pole EasyPact Solar MCCB rated 400 A at 40 °C with a 36 kA breaking capacity at 800 V AC (performance level F). The 36 kA interrupting rating at 800 V AC is the fault it can clear once; don't expect it to survive repeated faults near that limit.
Where it goes — deployment context
This is a fixed-mount MCCB for backplate installation (40 mm connection pitch), designed for distribution in solar PV systems — hence the EasyPact Solar branding. The 800 V AC rating suits the higher system voltages common in commercial and utility-scale solar arrays. It's rated Category A (no intentional short-time delay for selectivity with downstream breakers), so it's a main or feeder breaker, not a tie-breaker for generator paralleling. The IP20 finger-safe terminals are fine for enclosed panels; they're not rated for washdown environments.