Overload Relays 3RB2 Solid-State Overload Relays 3RB20, 3RB21 for standard applications Short-circuit protection with fuses for motor feeders For short-circuit currents up to 50 kA or 100 kA at rated operational voltages up to 690 V For footnotes see page 24. SSCR = Standard Short-Circuit Rating 25 Siemens · 2009 Overload Contac- relays tors Setting range Type A CLASS 5 and 10 CLASS 20 CLASS 30 690 V/ 50 kA 690 V/ 100 kA 690 V/ 50 kA 415 V/ 50 kA 600 V/ SSCR Fuse links1) Fuses1) LV HRC Type 3NA Type 3ND Acc. to BS 88 Listed acc. to UL, RK5 DIAZED Type 3SB NEOZED Type 3SE Operational class gG aM CL. L Rated operational current I e /AC-3 in A at ...
V R foa rt te yd o p oe fr ca oti oo rn da il c au tir or ne 2n )t I e/AC-3 in A p e n 400 500 690 400 500 690 400 500 690 1 2 1 2 2 2 -- Size S00 0.1 ... 0.4 3RT10 15 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 35 13) 20 13) -- -- 1.6 0.32 ... 1.25 3RT10 15 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 35 2 20 2 -- 2 5 1 ... 4 3RT10 15 3RT10 16 3RT10 17 4 4 4 4 4 4 4 4 4 35 10 20 10 -- 10 15 4 4 4 4 4 4 4 4 4 35 10 20 10 -- 10 15 4 4 4 4 4 4 4 4 4 35 10 20 10 -- 10 15 3 ... 12 3RT10 16 3RT10 17 9 6.5 5.2 9 6.5 5.2 9 6.5 5.2 35 20 20 20 -- 20 45 12 9 6.3 10 9 6.3 9 9 6.3 35 20 20 20 -- 20 45 Size S0 0.1 ... 0.4 3RT10 23 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 35 13) 20 13) -- -- 1.6 0.32 ...
1.25 3RT10 23 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 35 2 20 2 -- 2 5 1 ... 4 3RT10 23 3RT10 24 4 4 4 4 4 4 -- -- -- 63 10 20 10 -- 10 15 4 4 4 4 4 4 4 4 4 63 10 25 10 -- 10 15 3 ... 12 3RT10 23 3RT10 24 3RT10 25 9 6.5 5.2 9 6.5 5.2 -- -- -- 63 25 20 20 -- 20 45 12 12 9 12 12 9 12 12 9 63 25 25 20 20 20 45 12 12 12 12 12 12 12 12 12 63 25 25 20 20 20 45 6 ... 25 3RT10 24 3RT10 25 3RT10 26 12 12 9 12 12 9 12 12 9 63 25 25 25 20 25 70 17 17 13 16 16 13 14 14 13 63 25 25 25 20 25 70 25 18 13 16 16 13 14 14 13 100 35 35 35 20 25 100 Size S2 6 ... 25 3RT10 34 3RT10 35 25 25 20 22.3 22.3 20 19.1 19.1 19.1 125 63 63 63 50 63 100 25 25 24 25 25 24 25 25 24 125 63 63 63 50 80 100 12.5 ...
50 3RT10 34 3RT10 35 3RT10 36 32 32 20 22.3 22.3 20 19.1 19.1 19.1 125 63 63 63 50 63 125 40 40 24 29.4 29.4 24 26.5 26.5 24 125 63 63 63 50 80 150 50 50 24 32.7 32.7 24 26.5 26.5 24 160 80 80 80 50 80 200 Size S3 12.5 ... 50 3RT10 44 3RT10 45 50 50 47 49 49 47 41.7 41.7 41.7 200 125 125 125 63 125 200 50 50 50 50 50 50 45 45 45 200 160 160 160 80 160 200 25 ...
100 3RT10 44 3RT10 45 3RT10 46 3RT10 54 3RT10 55 65 65 47 49 49 47 41.7 41.7 41.7 200 125 125 125 63 125 250 80 80 58 53 53 53 45 45 45 200 160 160 160 80 160 300 95 95 58 59 59 58 50 50 50 200 160 160 160 100 160 350 100 100 100 81.7 81.7 81.7 69 69 69 355 315 315 315 160 250 400 -- -- -- 100 100 100 90 90 90 355 315 315 315 200 315 400 Size S6 50 ... 200 3RT10 54 3RT10 55 3RT10 56 115 115 115 81.7 81.7 81.7 69 69 69 355 315 315 315 160 250 450 150 150 150 107 107 107 90 90 90 355 315 315 315 200 315 500 185 185 170 131 131 131 111 111 111 355 315 315 315 200 315 500 Size S10 55 ...
250 3RT10 64 3RT10 65 3RT10 66 225 225 225 160 160 160 135 135 135 500 400 400 400 250 400 600 250 250 250 188 188 188 159 159 159 500 400 400 400 315 400 700 250 250 250 213 213 213 180 180 180 500 400 400 400 315 400 700 Size S12 160 ...
630 3RT10 64 3RT10 65 3RT10 66 3RT10 75 3RT10 76 3RT12 64 3RT12 65 3RT12 66 3RT12 75 3RT12 76 3TF684) 3TF694) 225 225 225 160 160 160 -- -- -- 500 400 400 400 250 400 600 265 265 265 188 188 188 -- -- -- 500 400 400 400 315 400 700 300 300 280 213 213 213 180 180 180 500 400 400 400 315 400 800 400 400 400 284 284 284 240 240 240 630 500 500 500 400 450 1000 500 500 450 355 355 355 300 300 300 630 500 500 500 500 500 1200 225 225 225 225 225 225 173 173 173 500 500 500 500 400 450 600 265 265 265 265 265 265 204 204 204 500 500 500 500 400 450 700 300 300 300 300 300 300 231 231 231 500 500 500 500 400 450 800 400 400 400 400 400 400 316 316 316 800 800 800 -- 630 800 1000 500 500 500 500 500 500 385 385 385 800 800 800 -- 630 800 1200 630 630 630 440 440 440 376 376 376 800 5005) 5005) 5005) 630 500 1600 630 630 630 572 572 572 500 500 500 800 6305) 6305) -- 630 630 1600 Size 14 0.32 ...
1.256) 3TF694) 820 820 820 572 572 572 500 500 500 800 6305) 6305) -- 630 630 1600