Semiconductor fuses Semiconductor (AC) fuses SCAC198 Other Protistor ® Fuses DIN Bracket Ferrule Fuses 17x49 gRB/URB - 690 VAC 12/04 Voltage rating U N ( V ) 690 690 Class gRB URB Current rating I N ( A ) 12 16 20 25 32 35 40 45 50 55 63 75 80 90 100 Tested Breaking capacity 200 k A @ 690 V 200 k A @ 690 V Estimated Breaking capacity 300 k A @ 690 V 300 k A @ 690 V Total clearing I 2 t @ U N I 2 tt (A 2 s) pre-arcing I 2 t @ 1 ms I 2 tp (A2s) 4.2 9.6 17.1 26.8 52.5 69 96 130 154 210 310 520 620 840 965 Watts loss 0.8 I N I N 1.95 2.2 3.0 4.4 5.0 5.2 5.8 6.3 7.2 7.4 8.0 8.8 9.4 11 13 3.5 4.0 5.5 8.0 9.0 9.5 10.5 11.5 13 13.5 14.5 16 17 20 23.5 Minimum operating voltage for separate trip-indicator: 20 V EXTREMELY HIGH BREAKING CAPACITY FUSES: PROTECTION OF SEMICONDUCTORS AS PER IEC STANDARD 60269.1 AND 4 690 V VOLTAGE RATING AS PER IEC 33 gR CLASS (CURRENT RATING 12 TO 90 A) AS PER VDE 636-23 - CLEARING ALL OVERLOADS - IMPROVED SAFETY AND PROTECTION - ENABLING SELECTIVE COORDINATION WITH ALL FUSES WITHIN DISTRIBUTION CIRCUIT aR CLASS (CURRENT RATING 100 A) ACCORDING TO VDE 636-23 AND IEC 60269.4 CONNECTION AS PER: - GERMAN STANDARD DIN 43653/00C - BRITISH STANDARD BS 88-4 These fuses are UL Recognized 30 65 110 170 330 430 610 820 970 1320 1950 3250 3900 5300 6150 Main Characteristics
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Semiconductor fusesSemiconductor (AC) fuses
SCAC198
Other Protistor® FusesDIN Bracket Ferrule Fuses
17x49 gRB/URB - 690 VAC
12/04
Voltagerating
UN( V )
690
690
Class
gRB
URB
CurrentratingIN( A )
1216202532354045505563758090
100
TestedBreaking capacity
200 k A@ 690 V
200 k A@ 690 V
EstimatedBreaking capacity
300 k A@ 690 V
300 k A@ 690 V
Total clearing
I2t @ UNI2tt (A2s)
pre-arcing
I2t @ 1 msI2tp (A2s)
4.29.6
17.126.852.56996
130154210310520620840
965
Watts loss
0.8 IN IN
1.952.23.04.45.05.25.86.37.27.48.08.89.411
13
3.54.05.58.09.09.5
10.511.513
13.514.5161720
23.5
Minimum operating voltage for separate trip-indicator: 20 V
EXTREMELY HIGH BREAKING CAPACITY FUSES:PROTECTION OF SEMICONDUCTORS AS PER IEC STANDARD 60269.1 AND 4
690 V VOLTAGE RATING AS PER IEC 33
gR CLASS (CURRENT RATING 12 TO 90 A) AS PERVDE 636-23
- CLEARING ALL OVERLOADS - IMPROVED SAFETY AND PROTECTION- ENABLING SELECTIVE COORDINATION WITH ALL FUSES
WITHIN DISTRIBUTION CIRCUIT
aR CLASS (CURRENT RATING 100 A) ACCORDING TO VDE636-23 AND IEC 60269.4
CONNECTION AS PER:- GERMAN STANDARD DIN 43653/00C- BRITISH STANDARD BS 88-4
6,9 gRB 17 D08P 126,9 gRB 17 D08P 166,9 gRB 17 D08P 206,9 gRB 17 D08P 256,9 gRB 17 D08P 326,9 gRB 17 D08P 356,9 gRB 17 D08P 406,9 gRB 17 D08P 456,9 gRB 17 D08P 506,9 gRB 17 D08P 556,9 gRB 17 D08P 636,9 gRB 17 D08P 756,9 gRB 17 D08P 806,9 gRB 17 D08P 906,9 URB 17 D08P 100
6,9 gRB 17 D08/126,9 gRB 17 D08/166,9 gRB 17 D08/206,9 gRB 17 D08/256,9 gRB 17 D08/326,9 gRB 17 D08/356,9 gRB 17 D08/406,9 gRB 17 D08/456,9 gRB 17 D08/506,9 gRB 17 D08/556,9 gRB 17 D08/636,9 gRB 17 D08/756,9 gRB 17 D08/806,9 gRB 17 D08/90
6,9 gRB 17/126,9 gRB 17/166,9 gRB 17/206,9 gRB 17/256,9 gRB 17/326,9 gRB 17/356,9 gRB 17/406,9 gRB 17/456,9 gRB 17/506,9 gRB 17/556,9 gRB 17/636,9 gRB 17/756,9 gRB 17/806,9 gRB 17/90
6,9 gRB 17P126,9 gRB 17P166,9 gRB 17P206,9 gRB 17P256,9 gRB 17P326,9 gRB 17P356,9 gRB 17P406,9 gRB 17P456,9 gRB 17P506,9 gRB 17P556,9 gRB 17P636,9 gRB 17P756,9 gRB 17P806,9 gRB 17P90
German standard with separatetrip-indicatorDIN 43623/00C
British standard with separatetrip-indicator BS 88-4
British standard withoutblown fuse indication
German standard withoutblown fuse indication
Semiconductor fusesSemiconductor (AC) fuses
SCAC200
Other Protistor® FusesDIN Bracket Ferrule Fuses
17x49 gRB/URB - 690 VAC
12/04
t (s)
I (A)
Time vs current characteristics
Total clearing I2t I2t corrective factor
Peak arc voltage
10 10 2 10 3 10 4
0 200 400 600 800
0 200 400 600 700
10 4
10 3
10 2
10
1
10 -1
10 -2
10 -3
10 -4
10 5
10 4
10 3
10 -2
10
10 5
10 4
10 3
10 2
10
Above: Curves indicate, for each rated current, pre-arcing time vs. R.M.S. pre-arcing current
Above: Curves show, for each rating, value of peak let-through current IC as a function of available fault current Ip.
Above: Horizontal curves show for each rated current maximumvalues of total clearing I2t (I2tt) as a function of prospectivecurrent Ip. @ 690 V. cos ϕ = 0.15.Oblique lines indicate total clearing duration Tt and associatedpre-arcing duration in brackets.
Left: Curve shows variation oftotal clearing time (I2tt) and totalclearing duration Tt as a functionof operating voltage U.
Left: Curve shows peak valueUm of arc voltage whichappears across fuse-link as afunction of operating voltageU@ cos ϕ = 0.15
Above: Curves indicate permissible value of timeconstant L/R as a function of DC working voltage.Curve 1: Ip ≥ 1,6 IN only for fuses gRB (current rating from 12 to 50 A)Curve 2: Ip ≥ 8 IN for fuses gRB et URB
U (V)U (V)
2
1
L/R (ms)
Um (V)
Curve indicates peak arc voltageUm which may appear across thefuse terminals at working voltage U.
Electrical characteristics:IN = 3 A - UN = 250 VACIN = 2 A - UN = 30 VDC
Certain minimum operating vol-tage/current
20 V-100 mA
Designation Ref. Num. Weight Pack.
MC 6,3 GR 2.5 Y 310015 10 g 3 pieces
10
8.5
31
23
7
cosses à souderou clips 2.8
20
DC Application data
NEW gR-CLASS
OPTIMAL PROTECTION OF POWER EQUIPMENTThanks to recent technological developments, Ferraz Shawmut todaymarkets gR-class PROTISTOR® fuses capable of clearing all types of over-loads, from low multiples of current ratings up to very high short-circuitcurrents. Enhanced performance enables these fuses to provide solu-tions to many previously unsolved problems in power electronics: pro-tection of cables without the use of additional components, protectionof equipment from fire hazards, selective coordination of different fuseswithin a single power distribution installation...
SELECTIVE COORDINATIONgR-class semiconductor fuses can be utilized in association with gI and gG-classlow voltage power distribution fuses of the same current rating, installed upst-ream. In a “selectively coordinated“ distribution installation, melting is limitedto the fuse associated with the faulted circuit, while upstream fuses remainintact. This prevents unnecessary down-time due to power blackouts in non-faulted branches.
FERRAZ SHAWMUT EXPERTISEgR-class fuses should be used in the design of low voltage equipment and in the protection ofpower electronics equipment. Designers can often substitute a gR-class fuse for an aR-class fuse(10x38, 14x51, 22x58, PSC 000 and 17x49 DIN80 or BS 88-4) but the reverse is not true: an aRfuse can never replace a gR fuse. Start protecting your new equipment with gR-class fuses today.The application of gR class fuses, with current ratings less than 100 Amps, offers enhanced pro-tection, safety and reliability, along with reduced risk of replacement errors and assembly costs.
Example:100A aR vs. 100A gR
aR
Relay
gR
Before AftergR 100A gR 100A
gG 100A
M M
Example ofselective
coordination
t
30s
300Aminimum interrupting
current
I
C'
C 100A "aR"
t
2h
110AI
100A "gR"
aR-CLASS vs. gR-CLASSaR-class fuses feature a high minimum inter-rupting current as compared with their cur-rent rating. The primary time-current charac-teristic of aR-class fuses is the CC’ curve,above which another protection device mustbe associated. The gR-class fuse representsconsiderably improved performance in semi-conductor protection.
Semiconductor fusesSemiconductor (AC) fuses
SCAC202
Other Protistor® FusesBS88-4 Fuses
10x28, 17x27 - 250 VAC
12/04
Extremely high breaking capacity fuses:protection of power semiconductors as perIEC standard 60269.1 and 4
250 V voltage rating complying with IEC 33
gr class (ratings from 5 to 32 a)AS PER VDE 636-23 AND IEC 60269.4
aR CLASS (RATINGS FROM 7 to 180 A) COMPLYING WITHVDE 636-23 AND IEC 60269.4
TWO MODELS COMPLYING WITH BS 88-4- WITHOUT INDICATOR- WITH SEPARATE TRIP-INDICATOR (SIZE 17x27)
17x27 URGS are UL Recognized
BRITISH STANDARD250 VAC - URE - URGS - URZ
From 5 to 180 ASizes 10x28 - 17x27
Minimum Operating voltage for separate trip indicator = 20 V
Size Designation Ref. Number Catalog NumberPack.CP 36x27With separated trip-indicatorBS88
Microswitch MC 6.3 GR 2.5 N - Ref. Y 310005
URGG
URGH
• These curves indicate, for each rated current, the pre-arcing time vs. the R/M.S. pre-arcing current.• Tolerance for the mean pre-arcing current ± 10%
• These curves indicate, for each rated current, the pre-arcing time vs. the R/M.S. pre-arcing current.• Tolerance for the mean pre-arcing current ± 10%
URE
URS
URT
Corrective factor - Peak arc voltage
* The mean curves show the variation of the totalclearing time (I2tt) and the total clearing duration ttas a function of operating voltage U
This curve show the peak value Um of the arc voltagewhich appears across the fuse link as a function of the ope-rating voltage U @ cos ϕ = 0.15.
EXTREMELY HIGH BREAKING CAPACITY FUSES: PROTECTION OF POWERSEMICONDUCTORS AS PER IEC STANDARD 60269.1 AND 4, AND EN60269-1 AND 4
500- 690 V VOLTAGE RATING (RATING 20 TO 400 A)
gR CLASS (gRB RATINGS 20 TO 125 A) ACCORDING TO VDE 636-23- CLEARING ALL OVERLOADS - IMPROVED SAFETY AND PROTECTION- ENABLING SELECTIVE COORDINATION WITH ALL FUSES
aR CLASS (URB RATINGS 75 TO 400 A) ACCORDING TO VDE 636-23 AND IEC 269.4
TWO MODELS ACCORDING TO BS 88-4 AND EN 60 269 .4STANDARDS; Z3 DRAWING (74 mm BETWEEN AXES) WITHOUTBLOWN FUSEINDICATION - WITH SEPARATE TRIP INDICATOR
These fuses are UL Recognized
Semiconductor fusesSemiconductor (AC) fuses
SCAC214
Other Protistor® FusesBS88-4 Fuses
000 BS88 - 500 V to 690 VAC
12/04
Minimum operating voltage for separate trip indicator = 20 V
Semiconductor fusesSemiconductor (AC) fusesOther Protistor® FusesBS88-4 Fuses000 BS88 - 500 V to 690 VAC
12/04
20253240506380
100125
6,9 gRB 000 BS88P0206,9 gRB 000 BS88P0256,9 gRB 000 BS88P0326,9 gRB 000 BS88P0406,9 gRB 000 BS88P0506,9 gRB 000 BS88P0636,9 gRB 000 BS88P0806,9 gRB 000 BS88P1006,9 gRB 000 BS88P125
The use of MC 6.3 GR 2-5N blown fuse remotesensing microswitch is possible.Ref. Number : Y 310015 mounted on separatetrip-indicator.See Microswitch section
British standard without blown fuse indicator
British standard with separate blown fuse trip-indicator
Weight: 125 gPackaging: 3 pieces
References
20253240506380
100125
6,9 gRB 000 BS88/0206,9 gRB 000 BS88/0256,9 gRB 000 BS88/0326,9 gRB 000 BS88/0406,9 gRB 000 BS88/0506,9 gRB 000 BS88/0636,9 gRB 000 BS88/0806,9 gRB 000 BS88/1006,9 gRB 000 BS88/125
Above: Horizontal curves show, for each rated current, maximumvalues of total clearing I2t (I2tt) as a function of prospective currentIp. @ UN with cos ϕ = 0.15.Oblique lines indicate total clearing duration Tt, with associatedpre-arcing duration in brackets.
102 103 104 105 106
106
105
104
103
102 103 104 105
10 2 10 3 10 4 10 5
Ip (A)
I2t (A2s)
10 m
s (5
ms)
10 m
s (2
.5 m
s)8
ms
(1.8
ms)
7 m
s (1
.5 m
s)6
ms
(1.3
ms)
5 m
s (1
ms)
4 m
s (0
.8 m
s)
3 m
s (0
.6 m
s)
2 m
s (0
.4 m
s)
1.5
ms
(0.3
ms)
1 m
s (0
.2 m
s)
125 A
100 A
80 A
63 A
50 A
40 A
32 A
25 A
20 A
Ip (A)
I2t (A2s)
10 m
s (5
ms)
10 m
s (2
.5 m
s)8
ms
(1.8
ms)
6.5
ms
(1.5
ms)
6 m
s (1
.3 m
s)4.
5 m
s (1
ms)
3.5
ms
(0.8
ms)
2.5
ms
(0.6
ms)
2 m
s (0
.4 m
s)
1.5
ms
(0.3
ms)
1 m
s (0
.2 m
s)
315 A
250 A
200 A
160 A150 A125 A110 A
100 A
80 A75 A
Ip (A)
I2t (A2s)
10 m
s (5
ms)
10 m
s (2
.5 m
s)
8 m
s (1
.8 m
s)7
ms
(1.5
ms)
6 m
s (1
.3 m
s)5
ms
(1 m
s)4
ms
(0.8
ms)
3 m
s (0
.6 m
s)
2 m
s (0
.4 m
s)
1.5
ms
(0.3
ms)
400 A(@ 500 V)
350 A
I2t corrective factor
Peak arc voltage
0 200 400 500 660
0 200 400 600 700
Above: Mean curves show variation of totalclearing time (I2tt) and total clearing duration Ttas a function of operating voltage U.
Left: Curve shows peakvalue Um of arc voltagewhich appears acrossfuse-link as a function ofthe operating voltage U @ cos ϕ = 0.15
U (V)
U (V)
K
Um (V)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
1400
1200
1000
800
600
gRB
URB
URB
SCAC217
Semiconductor fusesSemiconductor (AC) fusesOther Protistor® FusesBS88-4 Fuses000 BS88 - 500 V to 690 VAC
12/04
abcd
DC Application data
0
10
0
20
0
30
0
40
0
50
0
60
0
70
0
0
10
0
20
0
30
0
40
0
50
0
60
0
70
0
0.5
0.6
0.7
0.8
0.9
1.0
1.1
100
90
80
70
60
50
40
30
20
10
0
1400
1200
1000
800
600
400
200
0
10.90.80.70.60.50.40.30.20.1
0
Above: curves indicate permissible value of time constantL/R as a function of DC working voltage.Curve a: for ratings from 20 to 160 ACurve b : for ratings from 180 to 200 ACurve c : for ratings from 250 to 315 ACurve d : for ratings from 350 to 400 A
U (V)U (V)
L/R =80 ms
L/R =25 ms
L/R =10 ms
L/R (ms)Um (V)
Above: Curves indicate peak arcvoltage Um which may appearacross the fuse terminals at wor-king voltage U.
Above: Curve enables computation ofpower losses P for a IN-rated fuse as afunction of the R.M.S. current I (as a mul-tiple of IN for steady state operation)
Below: Curves show, for each rating, value of peak let-throughcurrent Ic as a function of available fault current Ip.
Ipm values give minimum DC inter-rupting current in amps.
Ratedcurrent
20253240506380
100125160200250315350400
aaaaaaaaaabccdd
606590
120150200270370500700
12001800220026003100
Curve Ipm (A)
gRB
gRB
URB
URB
Semiconductor fusesSemiconductor (AC) fuses
SCAC218
Other Protistor® FusesBS88-4 Fuses
000, 2.000 BS88Z - 690 VAC
12/04
Voltagerating
UN( V )
690
Size
000
2.000
Class
gRB
URC
URD
URC
URD
CurrentratingIN( A )
5065
758590
110150180200250280
175200235300325355400450500
TestedBreaking capacity
200 k A@ 690 V
200 k A@ 690 V
EstimatedBreakingcapacity
300 k A@ 690 V
300 k A@ 690 V
7301500
2500330042008900
1600031500520008200082000
1680025000356006400092400
126000208000210000328000
Pre-arcingI2t @ 1 msI2tp (A2s)
102210
390540690
1300270052509900
1550015500
276038005200
108001540021000396004000062000
Watts loss0.8 IN IN
7.78.8
9.410.513.213.814.314.915.417.623.7
18.220.424.228.629.129.730.833
35.2
1416
171924252627283243
333744525354566064
Minimum operating voltage for separate trip-indicator: 20 V
EXTREMELY HIGH BREAKING CAPACITY FUSES: PROTECTION OFPOWER SEMICONDUCTORS AS PER IEC STANDARD 60269.1 AND 4
690 V VOLTAGE RATING (RATINGS 50 TO 500 A)
gR CLASS (gRB RATINGS 50 AND 65 A) COMPLYING WITHVDE 636-23- CLEARING ALL OVERLOADS- IMPROVED SAFETY AND PROTECTION- ENABLING SELECTIVE COORDINATION WITH ALL FUSES
aR CLASS (URC AND URD RATINGS 75 TO 500 A) ACCORDING TO VDE 636-23 AND IEC 60269.4
FOUR MODELS: SINGLE AND TWIN BODY AS PER BS 88-4 STANDARD ; Z2 DRAWING (92 mm BETWEEN AXES)WITHOUT BLOWN FUSE INDICATOR - WITH SEPARATE TRIP-INDICA-TOR
Above and right: Horizontal curves show, for each ratedcurrent, maximum values of total clearing I2t (I2tt) as afunction of prospective current Ip @ UN with cos ϕ = 0.15.Oblique lines indicate total clearing duration Tt, with asso-ciated pre-arcing duration in brackets.
102 103 104 105 106
106
105
104
103
102 103 104 105
10 2 10 3 10 4 10 5
Ip (A)
I2t (A2s)
10 m
s (5
ms)
10 m
s (2
.5 m
s)7.
5 m
s (1
.8 m
s)6.
5 m
s (1
.5 m
s)5.
5 m
s (1
.3 m
s)4.
5 m
s (1
ms)
3.5
ms
(0.8
ms)
3 m
s (0
.6 m
s)
2 m
s (0
.4 m
s)
1.5
ms
(0.3
ms)
1 m
s (0
.2 m
s)
65 A
50 A
Ip (A)
I2t (A2s)
250-280 A
200 A
180 A
150 A
110 A
90 A85 A75 A
Ip (A)
I2t (A2s)
I2t corrective factor
Peak arc voltage
0 200 400 500 660
Left: Mean curveshows variation oftotal clearing time(I2tt) and totalclearing durationTt as a function ofoperating voltageU.
Left: Curve shows peakvalue Um of the arcvoltage which appearsacross fuse-link asa function of operatingvoltage U @ cos ϕ = 0.15
U (V)
K1.4
1.2
1
0.8
0.6
0.4
0.2
0
gRB
URC (000)URD (000)
URC (2000)URD (2000)
10 m
s (5
ms)
10 m
s (2
.5 m
s)7.
5 m
s (1
.8 m
s)6.
5 m
s (1
.5 m
s)5.
5 m
s (1
.3 m
s)4.
5 m
s (1
ms)
3.5
ms
(0.8
ms)
3 m
s (0
.6 m
s)
2 m
s (0
.4 m
s)
1.5
ms
(0.3
ms)
1 m
s (0
.2 m
s)
500 A
400-450 A
355 A325 A300 A
235 A200 A
175 A
0.5
0.6
0.7
0.8
0.9
1.0
1.1
10.90.80.70.60.50.40.30.20.1
0
Left: Curve enables com-putation of power lossesP for IN-rated fuse as afunction of R.M.S. cur-rent I (as a multiple of INfor steady state opera-tion)
Above: Curves indicate permissible value of time cons-tant L/R as a function of DC working voltage.Curve a: Ratings from 175 to 300 ACurve b: Rating 325 ACurve c: Ratings from 355 to 500 A
U (V) U (V)
L/R =80 ms
L/R =25 ms
L/R =10 ms
L/R (ms) Um (V)
Above: Curves indicate peak arc voltageUm which may appear across fuse termi-nals at working voltage U.
t (s)
Time vs current characteristics
10 102 103 104
10 4
10 3
10 2
10
1
10 -1
10 -2
10 -3
10 -4
Left: Curves indicate,for each rated current,pre-arcing time vs.R.M.S. pre-arcing cur-rent
Tolerance for meanpre-arcing current ±8%.
gRBa=130A2=0.6B1=1.25B2=0.6Cf3=0.8
URC-URDa=130A2=0.67B1=1.25B2=0.67Cf3=0.85
t (s)
104
103
102
10
1
10-1
10-2
10-3
10-4
a= 130A2=0.67B1= 1.25B2= 0.67Cf3= 0.8
5065
7585
9011
015
018
020
025
0-28
0
175
200
235
300
325
355
400-
450
500
105
104
103
102
Current limitation curves
102 103 104 105 106102 103 104 105 106
Ip (A)IC(A)
65 A50 A
250-280A200 A180 A150 A110 A90 A85 A75 A
Ic =
2
Ip
Ic =
2.5
Ip
Ic =
2
Ip
Ic =
2.5
Ip
I (A) I (A)
Below: Curves indicate, for each rating value of peak let-through current Ic as a function of available faultcurrent Ip.
Ipm values give minimum DC interrupting current in amps.
Ratedcurrent
5065758590
110150180200250280
175200235300325355400450500
aaaaaaabccc
aaaabbccc
150200270350370500700
1200180022002200
740870
1000140019002400360044004400
Curve Ipm (A)
gRB URCURD
URC (2000)URD (2000)
gRB-URC (000)URD (000)
102 103 104 105 106
500 A400-450 A355 A325 A300 A235 A200 A175 A
Ic =
2
Ip
Ic =
2.5
IpURCURD
102 103 104 105
(T000) (T: 2000)
Semiconductor fusesSemiconductor (AC) fuses
SCAC222
Other Protistor® FusesBS88-4 Fuses
36x55, 2x36x55 - 690 VAC
12/04
EXTREMELY HIGH BREAKING CAPACITY FUSES:PROTECTION OF POWER SEMICONDUCTORS AS PER IECSTANDARD 60269.1 AND 4
690 V VOLTAGE RATING COMPLYING WITH IEC 33
AR CLASS (RATINGS FROM 75 TO 800 A) AS PER VDE 636-23AND IEC 60269.4
THREE MODELS COMPLYING WITH BS 88-4- WITHOUT INDICATOR- WITH SEPARATE TRIP-INDICATOR- WITH BUILT-IN TRIP-INDICATOR
Minimum operating voltage for built-in and separate trip indicator = 20 V
Electrical characteristicsTimes vs current characteristics
690 V URR 690 V URGL
690 V URGM690 V URU
• These curves indicate, for each rated current, the pre-arcing time vs. the R/M.S. pre-arcing current.• Tolerance for the mean pre-arcing current ± 10%
This curve shows peak value Um of the arc voltagewhich appears across the fuse-link as a function of theoperating voltage U @ cos j = 0.15
Peak arc voltageThe mean curves shows the variation of total clearingtime (I2tt) and total clearing duration Tt as a function ofoperating voltage U.
Corrective factor
DC Application data
• This curves indicate the permissible value of time constant L/R as a function of DC working voltage• Ipm values give the minimum DC interrupting current in amps.
Ratedcurrent
Class
75110200250
200235400500630
URR
URU
2222
22221
225330600750
600700
120015001890
Curve* Ipm (A)
Curves and Ipm for each rating
Semiconductor fusesSemiconductor (AC) fuses
SCAC226
Other Protistor® FusesBS88-4 Fuses
17x49 gRB/URB - 690 VAC
12/04
Voltagerating
UN( V )
690
690
Class
gRB
URB
CurrentratingIN( A )
1216202532354045505563758090
100
TestedBreaking capacity
200 k A@ 690 V
200 k A@ 690 V
EstimatedBreaking capacity
300 k A@ 690 V
300 k A@ 690 V
Total clearing
I2t @ UNI2tt (A2s)
pre-arcing
I2t @ 1 msI2tp (A2s)
4.29.6
17.126.852.56996
130154210310520620840
965
Watts loss
0.8 IN IN
1.952.23.04.45.05.25.86.37.27.48.08.89.411
13
3.54.05.58.09.09.5
10.511.513
13.514.5161720
23.5
Minimum operating voltage for separate trip-indicator: 20 V
EXTREMELY HIGH BREAKING CAPACITY FUSES:PROTECTION OF SEMICONDUCTORS AS PER IEC STANDARD 60269.1 AND 4
690 V VOLTAGE RATING AS PER IEC 33
gR CLASS (CURRENT RATING 12 TO 90 A) AS PERVDE 636-23
- CLEARING ALL OVERLOADS - IMPROVED SAFETY AND PROTECTION- ENABLING SELECTIVE COORDINATION WITH ALL FUSES
WITHIN DISTRIBUTION CIRCUIT
aR CLASS (CURRENT RATING 100 A) ACCORDING TO VDE636-23 AND IEC 60269.4
CONNECTION AS PER:- GERMAN STANDARD DIN 43653/00C- BRITISH STANDARD BS 88-4
6,9 gRB 17 D08P 126,9 gRB 17 D08P 166,9 gRB 17 D08P 206,9 gRB 17 D08P 256,9 gRB 17 D08P 326,9 gRB 17 D08P 356,9 gRB 17 D08P 406,9 gRB 17 D08P 456,9 gRB 17 D08P 506,9 gRB 17 D08P 556,9 gRB 17 D08P 636,9 gRB 17 D08P 756,9 gRB 17 D08P 806,9 gRB 17 D08P 906,9 URB 17 D08P 100
6,9 gRB 17 D08/126,9 gRB 17 D08/166,9 gRB 17 D08/206,9 gRB 17 D08/256,9 gRB 17 D08/326,9 gRB 17 D08/356,9 gRB 17 D08/406,9 gRB 17 D08/456,9 gRB 17 D08/506,9 gRB 17 D08/556,9 gRB 17 D08/636,9 gRB 17 D08/756,9 gRB 17 D08/806,9 gRB 17 D08/90
6,9 gRB 17/126,9 gRB 17/166,9 gRB 17/206,9 gRB 17/256,9 gRB 17/326,9 gRB 17/356,9 gRB 17/406,9 gRB 17/456,9 gRB 17/506,9 gRB 17/556,9 gRB 17/636,9 gRB 17/756,9 gRB 17/806,9 gRB 17/90
6,9 gRB 17P126,9 gRB 17P166,9 gRB 17P206,9 gRB 17P256,9 gRB 17P326,9 gRB 17P356,9 gRB 17P406,9 gRB 17P456,9 gRB 17P506,9 gRB 17P556,9 gRB 17P636,9 gRB 17P756,9 gRB 17P806,9 gRB 17P90
German standard with separatetrip-indicatorDIN 43623/00C
British standard with separatetrip-indicator BS 88-4
British standard withoutblown fuse indication
German standard withoutblown fuse indication
Semiconductor fusesSemiconductor (AC) fuses
SCAC228
Other Protistor® FusesBS88-4 Fuses
17x49 gRB/URB - 690 VAC
12/04
t (s)
I (A) Ip (A)
Time vs current characteristics
Total clearing I2t I2t corrective factor
Peak arc voltage
10 10 2 10 3 10 4
0 200 400 600 800
0 200 400 600 700
10 4
10 3
10 2
10
1
10 -1
10 -2
10 -3
10 -4
10 5
10 4
10 3
10 -2
10
10 5
10 4
10 3
10 2
10
Above: Curves indicate, for each rated current, pre-arcing time vs. R.M.S. pre-arcing current
Above: Curves show, for each rating, value of peak let-through current IC as a function of available fault current Ip.
Above: Horizontal curves show for each rated current maximumvalues of total clearing I2t (I2tt) as a function of prospectivecurrent Ip. @ 690 V. cos ϕ = 0.15.Oblique lines indicate total clearing duration Tt and associatedpre-arcing duration in brackets.
Left: Curve shows variation oftotal clearing time (I2tt) and totalclearing duration Tt as a functionof operating voltage U.
Left: Curve shows peak valueUm of arc voltage whichappears across fuse-link as afunction of operating voltageU@ cos ϕ = 0.15
Above: Curves indicate permissible value of timeconstant L/R as a function of DC working voltage.Curve 1: Ip ≥ 1,6 IN only for fuses gRB (current rating from 12 to 50 A)Curve 2: Ip ≥ 8 IN for fuses gRB et URB
U (V)U (V)
2
1
L/R (ms)
Um (V)
Curve indicates peak arc voltageUm which may appear across thefuse terminals at working voltage U.
Electrical characteristics:IN = 3 A - UN = 250 VACIN = 2 A - UN = 30 VDC
Certain minimum operating vol-tage/current
20 V-100 mA
Designation Ref. Num. Weight Pack.
MC 6,3 GR 2.5 Y 310015 10 g 3 pieces
10
8.5
31
23
7
cosses à souderou clips 2.8
20
DC Application data
NEW gR-CLASS
OPTIMAL PROTECTION OF POWER EQUIPMENTThanks to recent technological developments, Ferraz Shawmut todaymarkets gR-class PROTISTOR® fuses capable of clearing all types of over-loads, from low multiples of current ratings up to very high short-circuitcurrents. Enhanced performance enables these fuses to provide solu-tions to many previously unsolved problems in power electronics: pro-tection of cables without the use of additional components, protectionof equipment from fire hazards, selective coordination of different fuseswithin a single power distribution installation...
SELECTIVE COORDINATIONgR-class semiconductor fuses can be utilized in association with gI and gG-classlow voltage power distribution fuses of the same current rating, installed upst-ream. In a “selectively coordinated“ distribution installation, melting is limitedto the fuse associated with the faulted circuit, while upstream fuses remainintact. This prevents unnecessary down-time due to power blackouts in non-faulted branches.
FERRAZ SHAWMUT EXPERTISEgR-class fuses should be used in the design of low voltage equipment and in the protection ofpower electronics equipment. Designers can often substitute a gR-class fuse for an aR-class fuse(10x38, 14x51, 22x58, PSC 000 and 17x49 DIN80 or BS 88-4) but the reverse is not true: an aRfuse can never replace a gR fuse. Start protecting your new equipment with gR-class fuses today.The application of gR class fuses, with current ratings less than 100 Amps, offers enhanced pro-tection, safety and reliability, along with reduced risk of replacement errors and assembly costs.
Example:100A aR vs. 100A gR
aR
Relay
gR
Before AftergR 100A gR 100A
gG 100A
M M
Example ofselective
coordination
t
30s
300Aminimum interrupting
current
I
C'
C 100A "aR"
t
2h
110AI
100A "gR"
aR-CLASS vs. gR-CLASSaR-class fuses feature a high minimum inter-rupting current as compared with their cur-rent rating. The primary time-current charac-teristic of aR-class fuses is the CC’ curve,above which another protection device mustbe associated. The gR-class fuse representsconsiderably improved performance in semi-conductor protection.
12/04
Semiconductor fusesSemiconductor (AC) fuses
SCAC230
Other Protistor® FusesBS88-4 Fuses
Microswitches for BS88-4 Protistor®
12/04
8,5
31
23
11
2,8
20
7
33
3,413
28,5
22,5
26
15
23,6
27
8,4
Ref. NumberCatalogNumber Pack.Weight
(g)
MC 6,3 GR 2-5 N(for separatetrip-indicator)
10Y 310015 3
Ref. NumberCatalogNumber Pack.Weight
(g)
MC 36 GR 2-5(for built-in
trip-indicator)10P 092496 3
Main Characteristics
MICROSWITCH SYSTEMS ADAPTED
TO THE FOLLOWING FUSES:
- BS88 - 4 separated trip-indicator
- BS88 - 4 built-in trip-indicator
Code
AC Insulationvoltagerating(***)
Interrupting rating AC voltagewithstand
test(*)
Currentrating
Positiveoperating
voltage/current
Fire class accordingto UL 94
Impulsevoltage testUimp1.2/50
µs(**)
Non inductive circuit Inductive circuit : L/R = 25ms Current
30V 110V 250V 30V 110V 250V
* Between power circuit and microswitch terminals as per IEC 60 and 694 (50/60 Hz 1 min duration in dry air)** Between power circuit and microswitch terminals Uimp: impulse voltage as per IEC 947-1*** Between power circuit and microswitch terminals