The Siemens 5SL4216-7RC is a SENTRON miniature circuit breaker — 2-pole, C-curve, rated 16 A with a 10 kA breaking capacity per EN 60898 at 415 V AC.
Snaps onto standard DIN rail — 18 mm width per pole (one modular unit), so this 2-pole breaker takes up 18 mm of rail space. Mounting position is any, which gives flexibility in tight enclosures.
Rated supply voltage 415 V AC, with multi-phase operation up to 440 V AC and single-phase up to 250 V AC. Frequency 50/60 Hz — covers both mains standards. Mechanical life 10,000 operating cycles typical. Power loss 1.92 W per pole in hot state at rated current — useful for thermal budgeting inside a crowded enclosure. Halogen-free and silicon-free construction, which matters for outgassing-sensitive environments like clean rooms or data centers.