It switches the neutral conductor, which is useful for final circuits where you want to isolate both phase and neutral. Rated at 6 kA per EN 60898-1 and 30 kA per IEC 60947-2, it covers the gap between standard household breaking capacity and the higher fault levels you see in industrial sub-distribution.
The 5SY6504-7 carries a 6 kA breaking capacity under EN 60898-1 and a 30 kA rating under IEC 60947-2. Under UL 1077 it's rated 5 kA, which covers North American supplementary protection applications. The DC rating is 15 kA at 60 V (max 72 V), so it works in 48 VDC control bus protection or solar combiner boxes. Single-phase AC rating goes to 250 V, covering most 240 V branch circuits. That -40 °C floor means it's fine in unheated warehouse or cold storage environments — no condensation lockout. Vibration resistance per IEC 60068-2-6 at ±1 mm / 5-25 Hz and 50 m/s² at 25-150 Hz covers most industrial machinery panels without needing a separate isolation mount.
Snaps onto standard DIN rail — the quick-assembly system means it clips in without a screwdriver. The sealable option (padlockable toggle) is present if the panel requires lockout-tagout provision.
Certified to IEC / EN 60898-1 and IEC / EN 60947-2, plus UL 1077 for North American supplementary protection. Halogen-free and silicon-free construction.