Overload Relays 3RB2 Solid-State Overload Relays 3RB20, 3RB21 for standard applications Dimensional drawings 3RB20 16, 3RB21 13 , size S00 3RB20 36, 3RB21 33 , size S2 9 56 18 57 64 NSB0_01510 76 92 45 73 55 5 21 104 NSB0_01512a 3RB20 16, 3RB21 13 , size S00, stand-alone installation 3RB20 46, 3RB21 43 , size S3 NSB0_01709 23 11 Ш 6 63 77 90 89 106 64 5 70 5 31 119 NSB0_01514 35 75 5 5 45 3RB20 56, 3RB21 53 , size S6 3RB20 26, 3RB21 23 , size S0 37 17 Ш 5 79 62 73 79 95 99 119 60 NSB0_01511 45 75 95 Ш 7 3 NSB0_01516 120 150 5 47 3RB20 26, 3RB21 23 , size S0, stand-alone installation 3RB20 66, 3RB21 63 , size S10/S12 48 Ш 11 51 25 NSB0_01710 35x85 97 57 85 122 147 125 Ш 9 5 NSB0_01518 89 5 5 45 145 61 6 156 27 Siemens · 2009