Siemens 3RU11 Reference Manual page 26

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
Overload Contac- CLASS 5 and 10
relays tors
Setting range Type Rated operational current
at ... V
A 400
Size S00
0.1 ... 0.4 3RT10 15 0.4
0.32 ... 1.25 3RT10 15 1.25
1 ... 4 3RT10 15 4
3RT10 16 4
3RT10 17 4
3 ... 12 3RT10 16 9
3RT10 17 12
Size S0
0.1 ... 0.4 3RT10 23 0.4
0.32 ... 1.25 3RT10 23 1.25
1 ... 4 3RT10 23 4
3RT10 24 4
3 ... 12 3RT10 23 9
3RT10 24 12
3RT10 25 12
6 ... 25 3RT10 24 12
3RT10 25 17
3RT10 26 25
Size S2
6 ... 25 3RT10 34 25
3RT10 35 25
12.5 ... 50 3RT10 34 32
3RT10 35 40
3RT10 36 50
Size S3
12.5 ... 50 3RT10 44 50
3RT10 45 50
25 ... 100 3RT10 44 65
3RT10 45 80
3RT10 46 95
3RT10 54 100
3RT10 55 --
Size S6
50 ... 200 3RT10 54 115
3RT10 55 150
3RT10 56 185
Size S10
55 ... 250 3RT10 64 225
3RT10 65 250
3RT10 66 250
Size S12
160 ... 630 3RT10 64 225
3RT10 65 265
3RT10 66 300
3RT10 75 400
3RT10 76 500
3RT12 64 225
3RT12 65 265
3RT12 66 300
3RT12 75 400
3RT12 76 500
4)
3TF68 630
4)
3TF69 630
Size 14
6) 4)
0.32 ... 1.25 3TF69 820
For footnotes see page 23.
24 Siemens · 2011
CLASS 20
I
/AC-3 in A
e
500 690 400 500 690
0.4 0.4 0.4 0.4 0.4
1.25 1.25 1.25 1.25 1.25
4 4 4 4 4
4 4 4 4 4
4 4 4 4 4
6.5 5.2 9 6.5 5.2
9 6.3 10 9 6.3
0.4 0.4 0.4 0.4 0.4
1.25 1.25 1.25 1.25 1.25
4 4 4 4 4
4 4 4 4 4
6.5 5.2 9 6.5 5.2
12 9 12 12 9
12 12 12 12 12
12 9 12 12 9
17 13 16 16 13
18 13 16 16 13
25 20 22.3 22.3 20
25 24 25 25 24
32 20 22.3 22.3 20
40 24 29.4 29.4 24
50 24 32.7 32.7 24
50 47 49 49 47
50 50 50 50 50
65 47 49 49 47
80 58 53 53 53
95 58 59 59 58
100 100 81.7 81.7 81.7
-- -- 100 100 100
115 115 81.7 81.7 81.7
150 150 107 107 107
185 170 131 131 131
225 225 160 160 160
250 250 188 188 188
250 250 213 213 213
225 225 160 160 160
265 265 188 188 188
300 280 213 213 213
400 400 284 284 284
500 450 355 355 355
225 225 225 225 225
265 265 265 265 265
300 300 300 300 300
400 400 400 400 400
500 500 500 500 500
630 630 440 440 440
630 630 572 572 572
820 820 572 572 572
CLASS 30 690 V/
50 kA
1)
Fuse links
LV HRC
DIAZED
NEOZED
Operational class gG
Rated operational current
for type of coordination
400 500 690 1 2
0.4 0.4 0.4 35 1
1.25 1.25 1.25 35 2
4 4 4 35 10
4 4 4 35 10
4 4 4 35 10
9 6.5 5.2 35 20
9 9 6.3 35 20
0.4 0.4 0.4 35 1
1.25 1.25 1.25 35 2
-- -- -- 63 10
4 4 4 63 10
-- -- -- 63 25
12 12 9 63 25
12 12 12 63 25
12 12 9 63 25
14 14 13 63 25
14 14 13 100 35
19.1 19.1 19.1 125 63
25 25 24 125 63
19.1 19.1 19.1 125 63
26.5 26.5 24 125 63
26.5 26.5 24 160 80
41.7 41.7 41.7 200 125
45 45 45 200 160
41.7 41.7 41.7 200 125
45 45 45 200 160
50 50 50 200 160
69 69 69 355 315
90 90 90 355 315
69 69 69 355 315
90 90 90 355 315
111 111 111 355 315
135 135 135 500 400
159 159 159 500 400
180 180 180 500 400
-- -- -- 500 400
-- -- -- 500 400
180 180 180 500 400
240 240 240 630 500
300 300 300 630 500
173 173 173 500 500
204 204 204 500 500
231 231 231 500 500
316 316 316 800 800
385 385 385 800 800
376 376 376 800 500
500 500 500 800 630
500 500 500 800 630
SSCR = Standard Short-Circuit Rating
690 V/ 690 V/ 415 V/
100 kA 50 kA 50 kA
1)
Fuses
Type 3NA Type Acc. to
3ND
Type 3SB
BS 88
Type 3SE
aM
I
/AC-3 in A
e
2)
1 2 2 2
3) 3)
20 1 -- --
20 2 -- 2
20 10 -- 10
20 10 -- 10
20 10 -- 10
20 20 -- 20
20 20 -- 20
3) 3)
20 1 -- --
20 2 -- 2
20 10 -- 10
25 10 -- 10
20 20 -- 20
25 20 20 20
25 20 20 20
25 25 20 25
25 25 20 25
35 35 20 25
63 63 50 63
63 63 50 80
63 63 50 63
63 63 50 80
80 80 50 80
125 125 63 125
160 160 80 160
125 125 63 125
160 160 80 160
160 160 100 160
315 315 160 250
315 315 200 315
315 315 160 250
315 315 200 315
315 315 200 315
400 400 250 400
400 400 315 400
400 400 315 400
400 400 250 400
400 400 315 400
400 400 315 400
500 500 400 450
500 500 500 500
500 500 400 450
500 500 400 450
500 500 400 450
800 -- 630 800
800 -- 630 800
5) 5) 5)
500 500 630 500
5) 5)
630 -- 630 630
5) 5)
630 -- 630 630
600 V/
SSCR
Listed
acc. to
UL,
RK5
CL. L
--
1.6
5
15
15
15
45
45
1.6
5
15
15
45
45
45
70
70
100
100
100
125
150
200
200
200
250
300
350
400
400
450
500
500
600
700
700
600
700
800
1000
1200
600
700
800
1000
1200
1600
1600
1600