Ratings and what they mean for the panel
The 5SP3225-3: The E characteristic (tripping class E) provides a defined overload and short-circuit response curve. The 25 kA interrupting capacity at 400 V AC means this MCB can safely clear faults up to that level without upstream damage, meeting the requirements for residential and infrastructure installations per EN 60898. Rated insulation voltage (Ui) is 690 V, with a surge voltage resistance of 6 kV and overvoltage category IV — suitable for main incoming supply positions where transient overvoltages are highest. Degree of pollution 3 confirms the part is rated for conductive pollution environments typical in industrial and infrastructure panels.
Mounting and integration
Snap-on mounting to 35 mm DIN rail per EN 60715. Occupies 3 modular width units. Depth is 76.3 mm, height 128 mm. Accepts solid or stranded conductors from 2.5 mm² up to 50 mm². Saddle terminals and infeed at box terminal are standard. IP40 protection with connected conductors. Integrated locking slide allows sealing with a lock, wire seal, or cable ties — useful for tamper-proof installations.
Environmental and mechanical endurance
Operates from -40 °C to +70 °C. Shock resistance: 30 g for at least 3 impacts, 11 ms duration. Vibration resistance: 2 g, 20 frequency cycles 5 to 150 to 15 Hz per IEC 60068-2-6. Mechanical service life typical 20,000 operating cycles.