Product identity and intended use
Rated operational current is 25 A at AC-3 duty (400 V), and the trip class is Class 10, which means it will trip within 10 seconds at 7.2× rated current — fast enough to protect a transformer winding from sustained overload.
The S0 frame size (45 mm wide, 97 mm tall, 96 mm deep) fits standard panel layouts. Clearance: 50 mm above and below, 30 mm at the sides, zero forward/backward — so it can sit flush against a backplate. Main circuit connections are top and bottom screw terminals, accepting 2×(1–2.5 mm²) solid/stranded or 2×(2.5–10 mm²) — torque to 2–2.5 N·m.
Electrical ratings and environment
Rated insulation voltage 690 V, surge voltage resistance 6 kV. Operates at 50–60 Hz.