Panel fit and protection profile
The Siemens 5SL3250-6 is a 2-pole SENTRON miniature circuit breaker rated 50 A with a B tripping characteristic, meaning it trips at 3–5× rated current — suited for residential and light commercial loads where inrush is moderate, like lighting circuits or general-purpose outlets. The 4.5 kA breaking capacity per EN 60898 (also rated per IEC 60947-2 at 4.5 kA) handles typical fault levels in building distribution boards; at 400 V AC it covers standard single-phase and split-phase panels. The B curve avoids nuisance trips on resistive loads but will clear fast on a hard short.
DIN-rail footprint and wiring
Occupies 2 width units (36 mm) on a DIN rail, with a depth of 76 mm and an installation depth of 70 mm — standard for the 5SL3 family. The screw terminals accept solid or stranded conductors from 0.75 to 25 mm², with a tightening torque of 2.5 to 3 N·m.
Halogen-free and silicon-free construction, sealable for tamper-proofing. Overvoltage category 3, energy limiting class 3. Suitable for residential buildings and infrastructure applications per the manufacturer's designation.