Semiconductor fuses
Semiconductor (AC) fuses
Other Protistor
®
Fuses
Ferrule Fuses
27x60 gRB - 800 VAC
800 VAC
gRB from 8 to 110 A
Size: 27 x 60
EXTREMELY HIGH BREAKING CAPACITY FUSES: PROTECTION
OF POWER SEMICONDUCTORS
COMPLYING WITH IEC STANDARDS 60269-1 AND 4
800 V VOLTAGE RATING ACCORDING TO IEC 33
gR CLASS AS PER IEC 60269-4
- CLEARING ALL OVERLOADS
- IMPROVED SAFETY AND PROTECTION
- ENABLING SELECTIVE COORDINATION WITH OTHER FUSES
WITH TRIP INDICATOR
Dimensions
60,3
60,3
7
Unit weight
78 g
Ø 27
Ø 27
Ø
5
5
Trip indicator force: 4.5N at 0mm - 2.5N at 7mm
Main Characteristics
Total
Voltage
Current Pre-arcing
Tested
clearing
rating Class rating I
2
t @ 1 ms
2
Breaking
Watts loss
UN( V )
IN( A ) I
2
tp (A2s) I t @ UN
capacity
I
2
tt (A2s) 0.8 IN IN
Designation
Pack
Ref.
Number
Catalog Number
800
gRB
8
10
12
16
20
25
32
40
50
63
80
100
110
4.25
8.0
17.0
26.5
38.5
73.0
130
195
430
965
1890
3480
4670
70
100
180
250
350
600
1000
1400
2700
5500
11000
19000
27000
1.2
1.3
1.4
1.9
2.4
2.8
3.5
4.7
4.8
5.6
6.4
7.4
7.7
2.0
821 CP GRB27.60 8
2.3
821 CP GRB27.60 10
2.5 175 k A 821 CP GRB27.60 12
3.5 @ 700V 821 CP GRB27.60 16
4.0
821 CP GRB27.60 20
5.0
821 CP GRB27.60 25
6.0 90 kA 821 CP GRB27.60 32
8.0 @ 800V 821 CP GRB27.60 40
8.5
821 CP GRB27.60 50
10
821 CP GRB27.60 63
11.5
821 CP GRB27.60 80
13
821 CP GRB27.60 100
14
821 CP GRB27.60 110
R221436
S221437
T221438
V221439
W221440
X221441
Y221442
Z221443
A221444
B221445
C221446
D221447
E221448
10
10
10
10
10
10
10
10
10
10
10
10
10
FR27GB80V 8T
FR27GB80V 10T
FR27GB80V 12T
FR27GB80V 16T
FR27GB80V 20T
FR27GB80V 25T
FR27GB80V 32T
FR27GB80V 40T
FR27GB80V 50T
FR27GB80V 63T
FR27GB80V 80T
FR27GB80V 100T
FR27GB80V 110T
Minimum operating voltage for trip-indicator: 20 V
Fuseholder Solution: See Gears and Fuse gears section
SCAC
190
12/04
Semiconductor (AC) fuses
Other Protistor
®
Fuses
Ferrule Fuses
27x60 gRB - 800 VAC
Semiconductor fuses
Total clearing I
2
t
Ic (A)
10 5
110 A
100 A
80 A
63 A
50 A
40 A
32 A
25 A
20 A
16 A
12 A
10 A
8A
DC Application data
L/R(ms)
90
80
70
60
50
40
30
20
10
0
1 23
Um (V)
10 4
2000
1
1000
10 3
2
0
500
100
200
300
400
500
600
700
800
900
10 2
0
U (V)
U (V)
0
1
- L/R = 60 ms /
2
- L/R = 30 ms
Above: Curve indicates peak arc voltage Um
which may appear across fuse terminals at
working voltage U, for different values of time
constant L/R of the fault circuit.
10 1
10 1
Ip (A)
10 2
10 3
10 4
10 5
Above: Horizontal curves show maximum values of total clearing I2t (I2tt) as function
of prospective current Ip. @ UN.with cosϕ = 0.15. Oblique lines indicate total clea-
ring duration Tt and associated pre-arcing duration
in brackets.
Above: Curves indicate permissible value of time cons-
tant L/R as a function of DC working voltage.
1
- IN from 80 to 110 A /
2
- IN from 25 to 63 A
3
- IN from 8 to 12 A
I
2
t corrective factor
K
Left: Mean curve
shows variation of
total clearing time (I
2
tt)
and total clearing
duration Tt as a func-
tion of operating vol-
tage U.
Current limitation curves
10 4
I
C
(A)
Below: Curves show, for each rating, value of peak let-through
current Ic as a function of available fault current Ip.
110 A
100 A
80 A
63 A
50 A
40 A
32 A
25 A
20 A
16 A
12 A
10 A
8A
10 3
10 2
U (V)
Peak arc voltage
10 1
10 1
10 2
10 3
10 4
10 5
Ip (A)
Um(V)
Left: Curve shows
peak value Um of arc
voltage which appears
across the fuse link as a
function of oper-ating
voltage U @ cos
ϕ
=
0.15
Time vs current characteristics
t (s)
10 4
10 3
10 2
10
1
10 -1
10 -2
10 -3
10 -4
12/04
10
12
16
20
25
32
40
50
63
80
100
110
8
gRB
a=130
A2=0.6
B1=1.25
B2=0.6
Cf3=0.8
Left: Curves show, for
each rated current,
pre-arcing time vs.
R.M.S. pre-arcing cur-
rent. Tolerance for
mean
pre-arcing
current ± 8%.
U(V)
Watts loss
P/PN
Left: Curve enables com-
putation of power losses
P for a IN-rated fuse as a
function of the R.M.S.
current I (as a multiple of
IN for steady state opera-
tion)
I/IN
10 1
10 2
10 3
10 4
I (A)
SCAC
191
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