The 5SY4416-7: Rated for a wide temperature range (-40 to 75 °C) and pollution degree 3, this breaker is at home inside industrial enclosures that see heat and grime — out here in the grease, that matters. It's halogen-free and silicon-free, which keeps the plastic from off-gassing into sensitive contacts. Mounts on a DIN rail with the quick-assembly system; any position. The IP20 rating (with conductors connected) is typical for a panel device — it's not a waterproof switch, but it holds up in a clean, closed cabinet.
Mounting and environment
Four modular width units (72 mm wide) on a DIN rail. The depth is 76 mm. Up to 95% humidity at 55 °C, dropping to 35% at 75 °C — no condensation worries inside a warmed-up panel. Sealable with a lockout tagout attachment. Combined terminals on top and bottom accept a range of conductors. Neutral conductor is not switched, so this breaker handles typical 4-wire systems where the neutral is continuous.