Key Technical Parameters General & Function Product / Model: ABB F204 AC‑80/0.03 RCCB Device Type: Residual Current Circuit Breaker (Leakage Current Protector) Series: F200 series (AC type residual current) Number of Poles: 4 (3 phases + neutral) Mounting Type: DIN‑rail Electrical Ratings Rated Current (In): 80 A Rated Operational Voltage: 230/400 V AC (three‑phase) Rated Insulation Voltage (Ui): 500 V Rated Residual (Leakage) Current: 30 mA (0.03 A) — trips on earth leakage Leakage Current Type: AC (responds to sinusoidal AC leakage) Rated Frequency: 50 Hz / 60 Hz Rated Conditional Short‑Circuit Current (Inc): ~10 kA Rated Service Short‑Circuit Breaking Capacity (Ics): ~1 kA Rated Impulse Withstand Voltage (Uimp): ~4 kV Performance & Endurance Electrical Endurance: ~10,000 switching cycles Power Loss: Approx. 5.3 W per pole under rated conditions Operating Ambient Temperature: –25 °C to +55 °C Pollution Degree: 2 (standard industrial environments) Mechanical & Connections Terminal Type: Screw terminals for line and load connections Connectable Conductor Sizes: Typical solid/flexible conductor ranges up to ~35 mm² Neutral Position: Right side (standard) Width: 4 modular units (fits standard DIN rail panel space) Applications Personnel Protection: Protects against electric shock from ground faults Equipment Safety: Reduces risk of fire or damage from earth leakage currents Distribution Boards: Used at the beginning of circuits feeding sub‑circuits Residential, Commercial & Industrial Installations: Where earth leakage protection is required