The Siemens 5SJ4110-6HG40 is a 1-pole miniature circuit breaker from the SENTRON 5SJ4 series, designed for branch-circuit protection in commercial and industrial control panels. For motor or drive circuits with higher inrush, a C or D curve would be the correct selection. Breaking capacity is rated 10 kA per EN 60898 and 15 kA per IEC 60947-2 at 400 VAC. The 15 kA rating under IEC 60947-2 is the one that governs industrial panel SCCR compliance — it tells you this breaker can safely interrupt a fault up to 15 kA without welding or rupturing, which covers most distribution boards fed by a transformer up to about 1000 kVA.
IP20 with conductors connected; IP40 in the handle range.
Rated for ambient temperatures from -40 °C to +75 °C, with max 95 % humidity. Sealable (can be locked in OFF position for lockout/tagout). Vibration resistance: 50 m/s² at 25 to 150 Hz and 60 m/s² at 35 Hz (4 seconds). Suitable for mechanical engineering and industrial environments per the manufacturer's designation.