The 76 mm depth and 54 mm width (3 modular units) let it drop into a standard DIN-rail enclosure without a footprint change from the usual 5SJ6 family.
The C-curve means the magnetic trip fires at 5 to 10 times rated current — 50 to 100 A for this 10 A breaker. That suits motor-starting or transformer inrush where a B-curve would nuisance-trip. The 6 kA breaking capacity is the same under both the wiring-standard (EN 60898) and industrial (IEC 60947-2) test sequences; if your panel SCCR is higher, you need an upstream current-limiting device. The screwless outgoing terminals accept ferruled stranded or solid conductors — speeds up panel wiring vs screw-clamp, but verify the strip length against the terminal design if your shop is used to a different brand's cage clamp.
Environmental and mounting notes
Rated for any mounting position, so it works in horizontal busbar panels or vertical DIN-rail cabinets without derating.