Siemens SENTRON 5SL6106-7YA — 1-pole C-curve MCB, 6 A, 6 kA
The Siemens SENTRON 5SL6106-7YA is a 1-pole miniature circuit breaker with C-curve tripping characteristic, rated 6 A at 230/400 V AC. Its 6 kA breaking capacity per EN 60898 covers residential and light commercial sub-distribution where fault levels stay under that threshold — typical for final circuits in residential buildings and infrastructure installations. The 18 mm width (1 modular unit) fits standard DIN-rail enclosures; the 76 mm depth leaves room for wiring behind the busbar.
What the ratings mean for fit
The C-curve (magnetic trip between 5× and 10× In) is the go-to for general-purpose lighting and socket-outlet circuits where moderate inrush from small motors or capacitive loads is expected — it avoids nuisance tripping on start-up while still clearing faults fast. The 6 kA rated short-circuit capacity per EN 60898 means this breaker safely interrupts faults up to that prospective current at 400 V; in a panel with higher available fault current you'd step up to a 10 kA or 15 kA rated device. Overvoltage category III confirms it's rated for fixed-installation downstream of the main distribution board. The 10 000 mechanical operating cycles typical service life is adequate for residential switching duty — not designed for frequent daily switching like a contactor.
Panel integration notes
Mounts on 35 mm DIN rail per EN 60715 in any position — no derating for horizontal or inverted orientation. The 70 mm installation depth accounts for the breaker body plus wiring space behind the rail; the total 76 mm depth includes the front toggle. IP20 with distribution board cover means it's protected against finger contact only when installed behind a panel door or cover — not for exposed or washdown environments. Sealable (yes) allows padlocking the toggle in the OFF position for lockout/tagout. Halogen-free and silicon-free construction matters for installations with sensitive contacts or where corrosive off-gassing during a fault must be avoided.