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TECHN I CAL DATA
POL E S TAR MCB AP P L I CAT I ON
219
TYPE B TYPICAL TRIPPING TIMES
l
RATING CURRENT REQUIRED TO OPERATE
(
A)
60
s 10s 5s 4s 3s 2s 1s 0.4s 0.1s 0.02s
6
12 23 24 24 24 24 24 24 24 24
10
19 32 40 40 40 40 40 40 40 40
16
30 50 64 64 64 64 64 64 64 64
20
40 68 80 80 80 80 80 80 80 80
32
67 112 128 128 128 128 128 128 128 128
40
80 120 160 160 160 160 160 160 160 160
50
100 160 200 200 200 200 200 200 200 200
63
138 230 252 252 252 252 252 252 252 252
TYPE C TYPICAL TRIPPING TIMES
l
RATING CURRENT REQUIRED TO OPERATE
(
A)
60
s 10s 5s 4s 3s 2s 1s 0.4s 0.1s 0.02s
6
12 23 33 37 44 45 45 45 45 45
10
19 32 48 55 67 75 75 75 75 75
16
30 50 67 72 83 100 120 120 120 120
20
40 68 92 104 120 150 150 150 150 150
32
67 112 144 153 176 208 240 240 240 240
40
80 120 152 168 190 230 300 300 300 300
50
100 160 210 230 260 312 375 375 375 375
63
138 220 283 302 334 397 472 472 472 472
TYPE D TYPICAL TRIPPING TIMES
l
RATING CURRENT REQUIRED TO OPERATE
(
A)
60
s 10s 5s 4s 3s 2s 1s 0.4s 0.1s 0.02s
6
12 23 33 37 44 55 90 90 90 90
10
19 32 48 55 67 93 150 150 150 150
16
30 50 67 72 83 100 147 240 240 240
20
40 68 92 104 120 150 240 300 300 300
32
67 112 144 153 176 208 288 432 480 480
40
80 120 152 168 190 230 340 600 600 600
50
100 160 210 230 260 312 450 750 750 750
63
138 220 283 302 334 397 555 819 945 945
POLESTAR MCBs – Type B, C & D typical tripping times/I
2
t energy let-through values
l
TOTAL I
2
t LEVELS
l
CABLE CONDUCTOR SIZES
50&63
A
40
A
32
A
20
A
16
A
10
A
6
A
2.5
mm
2
1.5
mm
2
1.0
mm
2
10
5
10
4
10
3
0.1
1.0
10.016.0
100.0
2
t energy let-through in A
2
s
(50
Hz sine wave)
one complete
1
/
2
cycle.
PROSPECTIVE FAULT CURRENT (kA)
TOTAL LET-THROUGH ENERGY (
2
t)
NOTE
Tests performed at 240V 50Hz at most unfavourable closing angle, ie +60°.
TYPICAL VALUES OF I
2
t ENERGY LET-THROUGH
FOR POLESTAR MCBs
l
TOTAL I
2
t LET-THROUGH (A
2
SEC)
MCB RATING
6
kA
10
kA
16
kA
6
8000
12000
16000
10
15000
25000
34000
16
20000
35000
53000
20
25000
40000
64000
32
28000
50000
70000
40
30000
65000
85000
50
36000
75000
110000
63
36000
75000
110000