The Siemens SENTRON 5SL6516-6YA is a 1-pole+N miniature circuit breaker rated 16 A at 230 V AC with a B tripping characteristic and 6 kA breaking capacity per EN 60898. It switches the neutral conductor (1P+N) and is designed for residential and infrastructure branch circuits — lighting, general-purpose outlets, small loads that don't draw sustained inrush. The B-curve trips between 3 and 5 times rated current, so it clears fast on short circuits but won't nuisance-trip on modest motor or capacitive starts.
Panel fit and mounting
Snaps onto 35 mm DIN rail; occupies 2 modular width units (36 mm total). Depth is 76 mm, installation depth 70 mm, so it sits flush with standard distribution board covers. Mounting position is any — no derating for horizontal or inverted rail. IP20 with distribution board cover fitted; not rated for wet or dusty environments without an enclosure.
Temperature derating and environment
Rated 16 A at 30 °C ambient; at 45 °C the continuous rating drops to 14.88 A. At 40 °C the listed value is 0.96 A — that figure appears to be a data anomaly (likely a decimal error or a different test condition) and should not be used for sizing. Storage range spans -40 to +75 °C. Halogen-free and silicon-free construction; sealable for tamper-evident applications. Pollution degree 2, overvoltage category III.