What the ratings mean for fit
The Siemens SENTRON 5SL6325-7 is a 3-pole miniature circuit breaker rated 25 A with a C tripping characteristic, meaning it is sized for moderate inrush loads like small motor circuits, lighting banks, and general-purpose distribution in residential or infrastructure panels. Its 6 kA breaking capacity — certified per both EN 60898 and IEC 60947-2 — is the fault current it can safely interrupt without upstream cascading; at 400/440 V AC multi-phase, this covers standard domestic and light commercial service-entrance fault levels. The 3-module-width (54 mm) body occupies three DIN-rail positions, and the IP20 rating (with connected conductors) is standard for enclosed panel mounting — no washdown or outdoor exposure here.
Panel integration notes
Mounts in any position on 35 mm DIN rail per EN 60715. The 76 mm depth leaves clearance for standard enclosure depths; 70 mm installation depth accounts for the rail clip and rear arc chamber. Sealable terminals (tamper-evident cover available) support utility-metering or rental applications where unauthorized access must be prevented. Supplementary devices (auxiliary contacts, shunt trips, undervoltage releases) can be snapped onto the right side without additional DIN space.
Environmental and compliance
Rated for ambient temperatures from -40 °C to +75 °C, covering unheated enclosures in cold climates and high-temp machine cabinets. Halogen-free and silicon-free construction matters for installations where outgassing during a fault could corrode nearby contacts or sensitive electronics. Overvoltage category III and pollution degree 2 are standard for fixed-installation distribution boards. Mechanical life is 10 000 operating cycles typical.