What this 5SY8232-8 is and what it handles
The Siemens SENTRON 5SY8232-8 is a 2-pole miniature circuit breaker (MCB) with a D tripping characteristic, rated 32 A at AC and designed for 50/60 Hz supply voltages up to 440 V AC (multi-phase operation).
Occupies 2 modular width units (36 mm) on a DIN rail, with a depth of 76 mm and installation depth of 70 mm — fits standard 45 mm DIN-rail enclosures with room for gland plates and cable bends. Ambient temperature range -40 to +75 °C, with derating above 45 °C: still rated 32 A at 45 °C, 31.01 A at 50 °C, and 29.98 A at 55 °C. Humidity tolerance up to 95% at 55 °C, tapering to 35% at 75 °C. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz — suitable for machine-mounted sub-panels on conveyors or presses.
Physical and compliance details
Identified per EN 61346-2 and IEC 81346-2 as function code F (protective device). Suitability for mechanical engineering/industry stated explicitly.