What the ratings mean for your panel
The 10 kA breaking capacity at 440 V DC (per IEC 60947-2) means this breaker can safely interrupt a DC fault current up to 10 kA without welding contacts or failing to clear — critical for DC bus or battery circuits where arc extinction is harder than in AC. The C-curve trips magnetically between 5 and 10 times rated current, so it tolerates moderate inrush from DC/DC converters or contactor coils without nuisance tripping. The 2-pole configuration switches both lines in a DC circuit, providing full isolation. Ambient temperature range is -40 to +70 °C, and the sealable design allows tamper-proof locking for safety circuits. Terminals accept solid or stranded conductors from 0.75 to 35 mm², with a tightening torque of 2.5 to 3.5 N·m. The 36 mm width occupies 2 modular units on DIN rail. Mounting position is any, and the installation depth is 70 mm. The IP20 rating with connected conductors is standard for enclosed panel use.