The Siemens SENTRON 5SY8216-8 is a 2-pole miniature circuit breaker with a D tripping characteristic, rated 30 kA breaking capacity at 400 V AC per IEC 60947-2. For DC circuits, it's rated 15 kA at 60 V (max 72 V), so it also handles battery-backed or rectified supplies in the same panel. Mounting is standard DIN rail — snaps onto a 35 mm rail, any position, with the quick-assembly system.
Compliance documentation is straightforward: it carries IEC / EN 60947-2 and UL 1077 approvals, which covers most industrial and commercial panels globally.
Deployment context
The 10 000 mechanical operating cycles mean it's built for occasional switching, not daily load-break duty — that's what a contactor is for. Ambient temperature range is -40 °C to 75 °C, with derating above 55 °C per the humidity table (max 95% RH at 55 °C, dropping to 35% at 75 °C). That covers outdoor enclosures in cold climates and hot machinery cabinets alike. Vibration resistance per IEC 60068-2-6 (±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz) means it holds up on a conveyor drive panel or a compressor skid.