The PV curve is tailored for photovoltaic string protection — designed to handle the DC fault characteristics and continuous current of solar arrays without nuisance tripping from inverter harmonics or inrush. The 5 kA interrupting rating (AC) covers typical residential and light commercial PV combiner boxes and string-level disconnects.
The 2-pole width occupies two modular units (36 mm). For a PV combiner panel, plan for the 32 A rating when sizing busbars and gland-plate entries; the S800 family's compact footprint leaves room for surge protection devices or DC isolators on the same rail.
