Key Technical Parameters General & Function Product / Model: ABB F204 AC‑63/0.03 Residual Current Circuit Breaker (RCCB) Part Number: 2CSF204005R1630 Device Type: 4‑pole residual current breaker Mounting: DIN‑rail panel mount Electrical Ratings Rated Current (In): 63 A — nominal current the RCCB can carry Rated Residual Current: 30 mA — leakage sensitivity trip level Number of Poles: 4P (three phases + neutral) Rated Operational Voltage: 230/400 V AC systems Rated Frequency: 50 Hz / 60 Hz Rated Insulation Voltage (Ui): ~500 V AC Rated Impulse Withstand Voltage (Uimp): ~4 kV Rated Conditional Short‑Circuit Current (Inc): 10 kA — withstand capacity with correct upstream protection Residual Current Type Type of Leakage Detection: AC Type — responds to sinusoidal alternating residual currents only Mechanical & Endurance Electrical Endurance: ~10,000 ON/OFF cycles Mechanical Endurance: ~20,000 cycles Terminal Type: Screw terminals with secure clamping Wire Connection Range: Multi‑wire and solid cores up to moderate conductor sizes Pollution Degree: 2 — suitable for typical indoor environments Physical & Installation Width: 4 modules (modular DIN rail width) Position of Neutral Terminal: Right side Ambient Operating Temperature: ~‑25 °C to +55 °C Degree of Protection: Housing ~IP40; Terminals ~IP20 Typical Applications Earth leakage protection for residential or three‑phase distribution circuits Personnel safety: trips on earth faults to reduce risk of electric shock Equipment protection: reduces fire risk from leakage currents Installation in distribution boards upstream of branch circuits, used with MCB/fuse upstream for overcurrent protection