The Siemens SENTRON 5SL4205-8CC is a 2-pole miniature circuit breaker (MCB) with a D tripping characteristic, rated at 0.5 A and 400 V AC, with a 10 kA breaking capacity per EN 60898. It is part of the 5SL4CC design series, intended for residential and infrastructure branch-circuit protection where high inrush currents — typical of motor or transformer loads — require the D-curve's wider magnetic trip threshold.
D-curve and breaking capacity
The D tripping characteristic means the magnetic release trips at 10 to 20 times rated current (5 to 10 A for this 0.5 A unit), so it rides through the start-up surge of inductive loads without nuisance tripping.
Physical fit and mounting
At 36 mm wide (2 width units) and 76 mm deep, the 5SL4205-8CC snaps onto standard DIN rail.