The Siemens 5SJ4103-7HG42 is a SENTRON 5SJ4 miniature circuit breaker, 1-pole, with a C-tripping characteristic. It's rated 10 kA breaking capacity per EN 60898 and 15 kA per IEC 60947-2 at 400 V AC, and 60 V DC.
Mounting and fit
Snaps onto standard DIN rail — 18 mm width (one modular unit). Mounting position any, so vertical or horizontal panels are fine. Depth 70 mm, height 121 mm. No tunnel terminals — combined type only. IP20 with conductors connected, IP40 in the handle area. Sealable, halogen-free, silicon-free.
The 5SJ4 series is a standard Siemens catalog line, so cross-reference documentation (UL, IEC, CE) is available with the shipment.