Siemens 5SL4101-6CC — 1A B-Curve MCB for Residential & Infrastructure
The B-curve trips magnetically at 3–5× rated current (3–5 A for this 1 A unit), which avoids nuisance tripping on small motor or transformer inrush while still providing fast short-circuit interruption. At elevated ambient temperatures, derate the continuous current: 0.96 A at 40 °C, 0.94 A at 45 °C, 0.92 A at 50 °C, and 0.9 A at 55 °C. The DC rating maxes at 72 V, so it also works for DC sub-circuits in telecom or solar combiner boxes within that voltage ceiling.
Panel Integration & Environment
The 18 mm width (1 MWU) allows dense packing in multi-pole assemblies. Operating temperature range -40 to 75 °C covers unheated enclosures and outdoor cabinets. Touch protection is integrated; neutral conductor switching is not provided (single-pole line break only).