FRENCH CYLINDRICAL
821cp gRB
SEMICONDUCTOR PROTECTION FUSES
800V AC
gRB from 8 to 110A
SIZES: 27 X 60
Features / Benefits
➤
Extremely high Interrupting rating Fuses:
Protection of power Semiconductors complying
with IEC standards 269-1 and 4
➤
800V Voltage Rating
according to IEC 33
➤
gR Class
as per IEC 269-4
-Full range protection
-Improved safety and protection
-Allows selective coordination
➤
With built in Trip Indicator
Dimensions
APPLICATIONS DATA
Voltage
rating
UN( V )
Class
Current pre-arcing Total clearing Watt losses
rating I
2
t @ 1 ms
I
2
t @ U
N
2
t (A
2s
)
IN( A ) I p
0.8
I
N
I
N
I
2
tt (A
2s
)
Tested
interrupting
rating
821
821
821
821
821
821
821
821
821
821
821
821
821
CATALOG NO.
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
GRB27.60
GRB27.60
GRB27.60
GRB27.60
GRB27.60
GRB27.60
GRB27.60
GRB27.60
GRB27.60
GRB27.60
GRB27.60
GRB27.60
GRB27.60
8
10
12
16
20
25
32
40
50
63
80
100
110
REF
R221436
S221437
T221438
V221439
W221440
X221441
Y221442
Z221443
A221444
B221445
C221446
D221447
E221448
PACK
10
10
10
10
10
10
10
10
10
10
10
10
10
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
2.3
2.5
3.5
4.0
5.0
6.0
8.0
8.5
10
11.5
13
14
175 kA
@ 700 V
90 kA
@ 800 V
Minimum operating voltage for trip-indicator: 20 V
See Fuse Blocks and Fuse Holders section
D 102
FRENCH CYLINDRICAL
821cp gRB
Total clearing I
2
t
SEMICONDUCTOR PROTECTION FUSES
DC Voltage Capabilities vs. Time Constant
DC Peak Arc Voltage
Provides the DC voltage capability of a fuse as a
function of the circuit time constant.
Above: Horizontal curves show maximum values of total clearing I2t (I2tt) as function
of prospective current lp. @ UN with cosj = 0.15 Oblique lines indicatye total
clearing duration Tt and associated pre-arching duration in brackets.
1 - L/R = 60 ms / 2 - L/R = 30 ms
Above: Curves indicate peak arc voltage Um
which may appear across fuse terminals of
working voltage U, for different values of
time constant L/R of the fault circuit.
D
Peak let-thru Data
Below: Curves show, for each rating, value of peak let-through
current Ic as a function of available fault current ip.
Clearing i2t vs. Operating Voltage
Correction Factor
to determine the
clearing I
2
t of a fuse
operating below its
rated voltage
Peak arc voltage
2000
Um (V)
Melting Time Current Data
1800
1600
1400
1200
1000
800
600
400
200
0
0 100
300
500
700
800
Determines the peak
arc voltage across
the fuse terminals as
a function of applied
voltage.
Left: Curves show,
for each rated
current, pre-arching
time vs. R.M.S.
pre-arching current.
Tolerance for mean
pre-arching current
±
8%.
U (V)
Watts loss Correction
Correction factor to
determine watts loss
value of a fuse
operating below its
rated current.
D 103
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