What the ratings mean for fit
The 5SL4150-8CC is a 1-pole miniature circuit breaker rated 230/400 V with a 10 kA breaking capacity and a D-trip curve at 50 A. The D-curve (10–20× In magnetic trip) is sized for loads with high inrush — motor starters, small transformers, or discharge lighting — where a B or C curve would nuisance-trip on start-up. The 10 kA interrupting rating at 400 V means it can safely clear a fault up to that prospective short-circuit current without upstream damage, which is the standard for most commercial and light industrial distribution boards in IEC 60947-2 environments.
Compliance and documentation
RoHS compliant since June 2013; REACH candidate list includes lead above 0.1% w/w (CAS 7439-92-1). Export control classification is AL: N / ECCN: N — no license required for standard cross-border trade. Group code P310; product group 3824.