Key Technical Parameters General & Electrical Ratings Product / Model: ABB S203‑C100 Rated Current (In): 100 A Number of Poles: 3 (three‑pole) Tripping Characteristic: Type C (moderate inrush tolerance) Rated Operational Voltage: Up to 400 V AC (max ~440 V) Rated Insulation Voltage (Ui): ~440 V Rated Frequency: 50 Hz / 60 Hz Standards Compliance: IEC/EN 60898‑1, IEC/EN 60947‑2 Degree of Protection: IP20 (housing) Breaking Capacity Rated Ultimate Short‑Circuit Breaking Capacity (Icu): ~10 kA at 230 V AC ~6 kA at 400 V AC Rated Service Short‑Circuit Breaking Capacity (Ics): ~6 kA at 400 V AC Rated Conditional Short‑Circuit Current (Icn): ~6 kA at 400 V AC Performance & Durability Power Loss: ~~29.4 W total (~9.8 W per pole) at rated conditions Electrical Endurance: ~10,000 switching cycles Mechanical Endurance: ~20,000 operations Energy Limiting Class: 3 Operating Temperature: Approx. −25 °C to +55 °C (typical) Mechanical & Installation Mounting Type: DIN‑rail Terminal Type: Screw, bi‑directional or failsafe cylinder‑lift type Connectable Conductors: Solid: ~2.5–50 mm² Flexible: ~4–35 mm² Connecting Capability: Busbar ~16 mm² Width: ~52.5 mm Depth: ~69 mm Height: ~88 mm Weight: ~0.42 kg Applications Protection of branch circuits and feeders in three‑phase systems Used in distribution panels for lighting, motor circuits, and general power distribution Suitable where moderate inrush currents occur (type C curve)