DC-rated miniature circuit breaker for industrial control circuits
This is a DC-only device; the evidence specifies DC operating voltage with polarity consideration, so it is not intended for AC branch circuits.
The C-curve (tripping characteristic class C) means the magnetic trip fires at 5 to 10 times rated current — 30 to 60 A for this 6 A unit — which suits moderate inrush loads like DC power supplies, contactor coils, and small DC motors without nuisance tripping on startup. The 2-pole design switches both conductors, and the neutral conductor is not switched, so this is a line-to-line DC breaker, not a line-to-neutral device.
Mounting and integration in a DC panel
Mounting position is any, which helps when orienting the breaker in a crowded enclosure. The breaker is sealable for tamper-proofing in metering or critical circuits.
The 5SY5206-7CC operates across a wide ambient temperature range from -40 °C to 75 °C, with humidity derating: max 95% RH up to 55 °C, tapering to 35% RH at 75 °C. Vibration resistance per IEC 60068-2-6 is ±1 mm at 5 to 25 Hz and 50 m/s² at 25 to 150 Hz — sufficient for installation on machine-mounted panels or near rotating equipment. Supplementary devices such as auxiliary switches, shunt trips, or alarm contacts can be installed, allowing remote status indication or emergency tripping.
