The Schneider Electric A9N61653 is a C60PV-DC miniature circuit-breaker, 1 A rated current, C-curve, 2 poles, rated for 800 V DC. It's built for DC photovoltaic strings and small commercial/residential DC distribution — the C-curve magnetic trip at 8.5 x In handles moderate inrush from inverters or DC-DC converters without nuisance trips. The 3 kA Icu at 650 V DC (1.5 kA at 800 V DC) is the fault-clearing ceiling; the service breaking capacity Ics is the same 3 kA at 650 V DC, meaning it can reclose after a fault at that level without derating.
Rated operational voltage 800 V DC. Rated current 1 A.
Rated and marked to EN/IEC 60947-2, utilisation category A (no intentional short-time delay — clears fast). Suitable for isolation per that same standard, so it doubles as a disconnector in the DC circuit. The 1500 cycles electrical durability (L/R = 2 ms) and 20000 cycles mechanical durability give a realistic service life for a PV combiner box that sees only a few operations per year.