SENTRON 5SL6410-7MB — 4-pole C-curve MCB, 10 A, 6 kA
The Siemens SENTRON 5SL6410-7MB is a 4-pole miniature circuit breaker with C-curve tripping characteristic, rated 10 A at 400 V AC and a breaking capacity of 6 kA per EN 60898.
In a panel with multiple breakers ganged together, derating may apply; the 1.2 W power loss per pole adds up across four poles (4.8 W total) and should be considered in enclosure thermal calculations. For installations where the available fault current exceeds 6 kA (e.g., close to a transformer), a higher-rated upstream device or a current-limiting MCB is needed. The 5SL6410-7MB carries Energy Limitation Class 3, meaning it limits let-through energy effectively for most final-circuit faults. Rated voltage 400 V AC for multi-phase operation, with a maximum of 440 V AC. Single-phase operation is rated at 250 V AC. The breaker is designed for AC circuits only; for DC applications the maximum DC voltage is 72 V, which limits its use to low-voltage DC subcircuits. Install inside a panel or enclosure that provides the required environmental sealing. The breaker is sealable to prevent tampering after commissioning.
The 4-module-width body (72 mm wide,) occupies four 18 mm slots. Mounting position is any, which simplifies layout in crowded enclosures.