The Siemens 5SL6425-6CC is a SENTRON miniature circuit breaker rated 25 A, 400 V AC, with a 6 kA breaking capacity tested to EN 60898. The B-curve trips between 3 and 5 times rated current (75–125 A), so it's sized for resistive and general-purpose loads — lighting circuits, small heaters, control transformers — where inrush isn't severe. At 72 mm wide (4 modular width units), it occupies four 18 mm DIN-rail slots.
Snap-on DIN rail mounting, any orientation.
Electrical performance and coordination
Breaking capacity of 6 kA at 400 V AC per EN 60898 covers most residential and light commercial fault levels. Power loss per pole is 3.2 W at rated current in hot operating state — four poles total 12.8 W, which matters for thermal budgeting in a crowded enclosure. Vibration resistance tested to 50 m/s² at 25–150 Hz per IEC 60068-2-6, so it's fine on switchgear panels near rotating machinery.