What the ratings mean for fit
The 5SN6506-8CN is a Siemens SENTRON miniature circuit breaker (MCB) with a 1P+N pole design, meaning it switches both the phase and the neutral, and the neutral is switched together with the pole. Rated 6 A at 30 °C and 230 V AC, with a breaking capacity of 6 kA per EN 60898. The D tripping characteristic means it tolerates high inrush currents — typically 10–20× rated current — making it the right choice for motor, transformer, or lighting ballast circuits where the start-up surge would nuisance-trip a B- or C-curve breaker. At 40 °C the continuous rating derates to 5.53 A; at 50 °C it drops to 5.02 A. If the panel ambient runs warm, size up one frame or account for the thermal curve.
Panel integration and mounting
Occupies 2 modular width units (36 mm wide) on a standard DIN rail. Installation depth is 70 mm; overall depth 76 mm. Mounting position is unrestricted. The neutral conductor is switched internally — no separate neutral bar needed downstream. Touch protection is provided. Sealable for tamper-evident installations. Halogen-free and silicon-free materials matter for environments sensitive to outgassing, such as clean rooms or sealed enclosures.
Compliance and approvals
Rated according to EN 60898. Overvoltage category III, pollution degree 2. Vibration resistance per IEC 60068-2-6: 50 m/s² at 25 to 150 Hz. Protection class IP20 with connected conductors. The product designation follows EN 61346-2 and IEC 81346-2 function code F.