Siemens Sentron 5SV3 Residual current circuit breaker PFI. Residual current devices (RCD, PFI, Combo) (Electrical Engineering / Components for panels and boxes). Principal data: current rating 40 A, number of poles 4P, class A, breaking capacity 300 mA. Supplied under manufacturer part number 5SV3644-6KL, EAN 4001869430164, HS code 8536.20, country of origin Germany.