It protects downstream wiring and loads from overcurrent and short-circuit faults in 230/400 V AC distribution panels. The 2-pole construction (1P+N) switches the phase and isolates the neutral in a single-width module.
Breaking capacity is 30 kA per IEC 60947-2 at 230/400 V AC — this means the breaker can safely interrupt a fault current up to 30,000 A without welding contacts or rupturing the case. For UL 1077 / CSA C22.2 No. 235 supplemental protection applications, the interrupting rating is 5 kA. The 30 kA figure gives headroom in high-fault-capacity installations like main distribution boards or industrial subpanels. Temperature derating is published: at 35 °C ambient the 3 A rating holds; at 40 °C it drops to 2.84 A; at 50 °C to 2.66 A; at 55 °C to 2.56 A. IP20 with connected conductors means the front is finger-safe once wired, but the interior is not sealed against dust ingress — standard for DIN-rail MCBs in enclosed panels.
Occupies 2 modular width units (36 mm wide, 90 mm tall, 76 mm deep, 70 mm installation depth). Sealable design allows locking the toggle in the ON or OFF position with a padlock or seal wire — useful for lockout/tagout procedures on industrial machinery.
Halogen-free and silicon-free construction meets the material compliance requirements common in clean manufacturing, semiconductor fabs, and food processing environments.