The Siemens SENTRON 5SV4617-0 is a 2-pole residual current operated circuit breaker (RCCB), Type AC, rated 80 A with a 300 mA trip threshold, for 230 V AC 50 Hz systems. The IP20 rating applies once the board is installed with conductors connected, so keep it inside an enclosure.
The 80 A rating holds at 40 °C ambient; at 45 °C it derates to 77.87 A, and at 55 °C to 70.26 A — so if your distribution board runs hot, factor the derating curve into the load. The 300 mA residual-current trip is an instantaneous Type AC design (sine-wave AC faults only), not short-time delayed, so it's suited for general shock and fire protection on circuits without electronics generating pulsed DC faults. The test circuit requires a minimum 100 V to operate the test button.
