It delivers a 10 kA breaking capacity at DC per IEC 60947-2, meaning it can safely interrupt a fault current of up to 10,000 A on a 220 V DC bus without welding contacts or cascading failure upstream. This is the rating that governs its fit in a DC distribution panel — not the 1 A continuous rating, but the 10 kA SCCR that tells you it survives a hard short on that battery bank or rectifier output. The C-curve (tripping characteristic class C) means the magnetic trip fires at 5 to 10 times rated current — so for a 1 A breaker, the instantaneous trip threshold sits between 5 A and 10 A.
At 18 mm width (1 modular unit), this breaker occupies a single slot on standard DIN rail.
Environmental and compliance specs
Rated for ambient temperatures from -40 °C to 75 °C, with humidity derating: max 95% RH up to 55 °C, tapering to 35% RH at 75 °C.