SIEMENS 3RA2220-4NB27-0BB4 – Load feeder | JUAL SIEMENS 3RA2220-4NB27-0BB4 – Load feeder fuseless, Reversing duty 400 V AC, Size S0 23.0…28.0 A 24 V DC screw terminal for installation on standard mounting rail with standard mounting rail adapter (also fulfills type of coordination 1) Type of coordination 2, Iq = 150 kA 1 NO+1 NC (contactor)