The Siemens 5SL7416-3RC is a miniature circuit breaker (MCB) from the SENTRON 5SL series, rated 16 A, 4-pole, with K characteristic and a 15 kA breaking capacity.
The 16 A rating sets the continuous current it carries without tripping. The K characteristic means it trips magnetically at 8 to 12 times rated current — designed for motor and inductive loads where inrush peaks exceed those of resistive circuits. Four poles let it switch all three phases plus neutral in a single module, saving DIN-rail space over ganging individual single-pole units.
Snap-on DIN-rail mounting for panel integration in final distribution boards, sub-distribution boards, and motor control centers. The K characteristic makes it a fit for motor branch circuits, transformer primaries, and other loads with high inrush — not for general lighting or socket-outlet circuits (those typically take B or C curves).