BS 88 industrial fuses - gG and gM curves
BS 88 gG and gM Industrial fuses
• The fuse complies with standard EN 60269-2
section II and standard BS 88 part 2.
• These fuses are designed for :
- “General purpose use” protection (gG type)
- motor protection (gM type)
• This fuse range insures an excellent current limitation for all overloads on a large range of applications.
Their size cannot allow exchange by other fuses
of higher rating in their range.
They are screwed into fuseholders or bolted
directly onto busbars, or in fuse interruptors disconnectors.
A, B and C types - gG curve
Applications
Features
Power cable protection
Distribution panel protection
Control Panel
Main circuit
Distribution panel
Lighting, heating and electrical equipments
Capacitor, Circuit breakers, batteries
DC circuit protection.
Fast gG curve
Asta 20 Certified
Very current limiting
Tested in DC
Voltage 415VAC and 250VDC
High breaking capacity :
80kA @ 415VAC and 40kA @ 250VDC tested
A type : bracket connection,
B type : blade with single central fixing hole connection
C type : blade with two central fixing hole connection.
Approval
Ratings
A type
A1 :
A2 :
A3 :
A4 :
from
from
from
from
2A to 32A
2A to 32A
40A to 100A
32A to 100A
B type
B1 :
B2 :
B3 :
B4 :
from
from
from
from
32A to 100A
125A to 200A
250A to 315A
355A to 400A
C type
C1 : from 355A to 400A
C2 : from 450A to 630A
C3 : from 670A to 800A
Overrating till 200A
A and B types - gM curve
Applications
Features
Approval
Fast curve gM
Motor protection
Asta 20 Certified
Very current limiting
Inductive load protections
Voltage 415VAC
Transient overloads
Electrical equipment using motors protection High breaking capacity : 80kA @ 415VAC tested
A type : bracket connection,
Capacitor
B type : blade with single central fixing hole connection
Ratings
A type
A1 :
A2 :
A3 :
A4 :
20A
30A
63A
100A and 200A
B type
B1 : 100A
B2 : 200A
B3 : 315A
143
A, B and C types - gG curve
A type
Type
A1
A1
A1
A1
A1
A1
A1
A1
A2
A2
A2
A2
A2
A2
A2
A2
A3
A3
A3
A3
A3
A4
A4
A4
A4
A4
A4
A4X*
A4X*
A4X*
B type
Rating
Ref. no
Designation
2
4
6
10
16
20
25
32
2
4
6
10
16
20
25
32
40
50
63
80
100
32
40
50
63
80
100
125
160
200
N226263
P226264
Q226265
R226266
S226267
T226268
V226269
W226270
Z226273
A226274
B226275
C226276
D226277
V227833
E226278
F226279
L226284
M226285
N226286
P226287
Q226288
T226291
V226292
W226293
X226294
Y226295
Z226296
D226300
E226301
F226302
2A1
4A1
6A1
10A1
16A1
20A1
25A1
32A1
2A2
4A2
6A2
10A2
16A2
20A2
25A2
32A2
40A3
50A3
63A3
80A3
100A3
32A4
40A4
50A4
63A4
80A4
100A4
125A4X
160A4X
200A4X
Pack.
Type
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
5
5
5
5
5
5
5
5
5
Rating
Ref. no
Designation
32
40
50
63
80
100
125
160
200
250
315
250
315
355
400
J226305
K226306
L226307
M226308
N226309
P226310
T226314
V226315
W226316
Z226319
A226320
C226322
D226323
E226324
F226325
32B1X
40B1X
50B1X
63B1X
80B1
100B1
125B2
160B2
200B2
250B3
315B3
250B3X
315B3X
355B4
400B4
Type
Rating
Ref. no
Designation
C1
C1
C2
C2
C2
C2
C3
C3
C3
C3
355
400
450
500
560
630
670
710
750
800
G226326
H226327
J226328
K226329
L226330
M226331
N226332
P226333
Q226334
R226335
355C1
400C1
450C2
500C2
560C2
630C2
670C3
710C3
750C3
800C3
1
1
1
1
1
1
1
1
1
1
B1X*
B1X*
B1X*
B1X*
B1
B1
B2
B2
B2
B3
B3
B3X*
B3X*
B4
B4
Pack.
10
10
10
10
5
5
5
5
5
1
1
1
1
1
1
C type
Pack.
* Current ratings additional to BS88.
A and B types - gM curve
A type
Type
A1
A1
A2
A2
A2
A3
A3
A4
A4
A4
A4X
A4X
B type
Rating
Ref. no
Designation
Pack.
20M25
20M32
32M40
32M50
32M63
63M80
63M100
100M125
100M160
100M200
200M250
200M315
X226271
Y226272
G226280
H226281
K226283
R226289
S226290
A226297
B226298
C226299
G226303
H226304
20M25A1
20M32A1
32M40A2
32M50A2
32M63A2
63M80A3
63M100A3
100M125A4
100M160A4
100M200A4
200M250A4X
200M315A4X
10
10
10
10
10
10
10
5
5
5
1
1
Type
B1
B1
B1
B2
B2
B3
144
Rating
Ref. no
Designation
Pack.
100M125
100M160
100M200
200M250
200M315
315M400
Q226311
R226312
S226313
X226317
Y226318
B226321
100M125B1
100M160B1
100M200B1
200M250B2
200M315B2
315M400B3
5
5
5
1
1
1
BS 88 industrial fuses - gG and gM curves
Standard fuse ampere rating
BS 88 industrial fuses - gG and gM curves
Dimensions
A type
Ref.
BS 88
Current ratings (A)
A1
2, 4, 6, 10, 16, 20, 25*, 32*, 20M25, 20M32
A2
2, 4, 6, 10, 16, 20, 25, 32, 32M40, 32M50, 32M63
A3
40, 50, 63
A3
80*, 100*, 63M80, 63M100
A4
32, 40, 50, 63
A4
80, 100
A4X
125, 160, 200, 100M125, 100M160, 100M200
A4X
200M250*, 200M315*
mm
In
mm
In
mm
In
mm
In
mm
In
mm
In
mm
In
mm
In
A max
B max
D max
Dimensions (mm & In)
E max F nom G nom H nom J nom K max
33
1-1/4
49
1-15/16
49
1-15/16
49
1-15/16
51
2
51
2
51
2
51
2
12,7
1/2
22
7/8
22
7/8
26
1-1/32
22
7/8
26
1-1/32
35
1-3/8
41
1-5/8
56
2-3/16
86
3-3/8
89
3-1/2
89
3-1/2
110
4-5/16
110
4-5/16
110
4-5/16
110
4-5/16
9,5
3/8
9
11/32
13
1/2
13
1/2
20
3/4
20
3/4
20
3/4
20
3/4
A max
B max
D max
45
1-3/4
45
1-3/4
45
1-3/4
45
1-3/4
45
1-3/4
45
1-3/4
45
1-3/4
45
1-3/4
52
2-1/16
22
7/8
26
1/32
35
1-3/8
35
1-3/8
41
1-5/8
41
1-5/8
51
2
41
1-5/8
51
2
137
5-3/8
137
5-3/8
137
5-3/8
137
5-3/8
137
5-3/8
137
5-3/8
137
5-3/8
159
6-1/4
137
5-3/8
0,8
1/32
1,2
3/64
1,2
3/64
1,2
3/64
2,4
3/32
2,4
3/32
2,4
3/32
2,4
3/32
44,25
1-3/4
73
2-7/8
73
2-7/8
73
2-7/8
94
3-11/16
94
3-11/16
94
3-11/16
94
3-11/16
4,8
3/16
5,5
7/32
5,5
7/32
5,5
7/32
8,7
11/32
8,7
11/32
8,7
11/32
8,7
11/32
couteau
ouvert
8
5/16
couteau
ouvert
couteau
ouvert
11
7/16
11
7/16
11
7/16
11
7/16
14,3
9/16
24
15/16
24
15/16
28
1-3/32
25,4
1
29
1-1/8
38
1-1/2
45
1-3/4
* Current ratings additional to BS88.
B type
Ref.
BS 88
Current ratings (A)
B1X
32, 40, 50, 63
B1
80, 100
B1
100M125, 100M160, 100M200
B2
125, 160, 200
B2
200M250, 200M315
B3
250, 315
B3
315M400
B3X
250, 315
B4
355, 400
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
Dimensions (mm & In)
E max
F nom G nom
15
9/16
20
3/4
20
3/4
20
3/4
26
1-1/32
26
1-1/32
26
1-1/32
26
1-1/32
26
1-1/32
1,4
3/64
3,2
1/8
3,2
1/8
3,2
1/8
3,2
1/8
3,2
1/8
6,4
1/4
3,2
1/8
6,4
1/4
111
4-3/8
111
4-3/8
111
4-3/8
111
4-3/8
111
4-3/8
111
4-3/8
111
4-3/8
133
5-1/4
111
4-3/8
H nom
I nom
8,7
11/32
8,7
11/32
8,7
11/32
8,7
11/32
8,7
11/32
8,7
11/32
8,7
11/32
10,3
13/32
8,7
11/32
14
9/16
14
9/16
14
9/16
14
9/16
14
9/16
14
9/16
14
9/16
14
9/16
16
5/8
C type
Ref.
BS 88
Current ratings (A)
C1
355*, 400
C2
450*, 500, 560*, 630
C3
670*, 710, 750*, 800
mm
In
mm
In
mm
In
A max
B max
D max
52
2-1/16
54
2-1/8
56
2-1/16
51
2
61
2-3/8
73
2
210
8-1/4
210
8-1/4
210
8-1/4
* Current ratings additional to BS88.
145
Dimensions (mm & In)
E max F nom G nom H nom J nom L nom
26
1-1/32
26
1-1/32
26
1-1/32
6,3
1/4
7,8
5/16
9,5
3/8
133
5-1/4
133
5-1/4
133
5-1/4
10,3
13/32
10,3
13/32
10,3
13/32
16
5/8
16
5/8
16
5/8
25,4
1
25,4
1
25,4
1
Fuse-link selection for 3 phase 415 V AC induction motor circuit
Motor rating
kW
HP
0,75
1
1,1
1,5
1,5
2
2,2
3
3
4
4
5
5,5
7,5
7,5
10
10
13,5
11
15
15
20
18,5
25
22
30
26
35
30
40
33
45
37
50
45
60
53
70
55
75
60
80
67
90
75
100
90
120
93
125
110
150
130
175
150
200
160
215
170
225
180
250
200
270
220
300
250
335
260
350
300
400
* Current ratings additional to BS88.
In
2
2,5
3,5
5
6,5
8
11
14
19
21
28
35
41
48
55
62
69
83
97
100
110
120
135
160
170
200
230
260
280
290
320
350
380
420
450
500
Direct-on-line start (7 x FLC for 10 sec)
Fuse-link rating (amperes)
gG
gM
6
10
10
16
20
25
20M25
32
20M32
40
32M40
50
32M50
50
32M50
63
32M63
80
63M80
100
63M100
100
63M100
125
100M125
160
100M160
160
100M160
200
100M200
200
100M200
200
100M200
250
200M250
250
200M250
250
200M250
315
200M315
355*
315M400*
400
315M400*
400
315M400*
450*
400M500*
500
400M500*
500
400M500*
560*
630
670*
710*
750*
800
-
Assisted start (3,5 x FLC for 20 sec)
Fuse-link rating (amperes)
gG
gM
4
6
6
10
16
16
20
25
20M25
32
20M32
32
40
32M40
50
50
63
80
63M80
80
63M80
100
100
125
100M125
125
100M125
160
160
160
200
200
250
200M250
315
315
355*
315M400*
355*
315M400*
400
400
450
400M500*
500
560*
630
-
Maximum full load current starting capability
Direct-on-line start (7 x FLC for 10 sec)
Maximum
Fuse-link
motor
rating (amperes)
gG
gM
In
2
0,6
4
1,3
6
2,3
10
4,1
16
6,0
20
7,9
25
20M25
10
32
20M32
13
40
32M40
18
50
32M50
26
63
32M63
30
80
63M80
40
100
63M100
54
125
100M125
61
160
100M160
82
200
110
250
200M250
150
315
200M315
170
355*
315M400*
200
400
315M400*
240
450*
400M500*
280
500
400M500*
310
560*
350
630
380
670*
420
710*
450
750*
480
800
510
* Current ratings additional to BS88.
Assisted start (3,5 x FLC for 20 sec)
Maximum
Fuse-link
motor
rating (amperes)
gG
gM
In
2
1,3
4
2,4
6
4,3
10
6,4
16
11
20
14
25
20M25
19
32
24
40
32M40
31
50
46
63
51
80
69
100
94
125
110
160
150
200
180
250
220
315
250
355*
310
400
340
450*
400M500*
380
500
430
560*
460
630
500
670*
530
710*
550
750*
570
800
600
146
gM
This data is based upon normal starting
conditions and usual efficiency and
power factor.
Conditions such as long run-up times,
large numbers of start in succession,
high ambient temperature or abnormal
transients during start/delta switching
may necessitate adjustments to fuse-link
selection.
BS 88 industrial fuses - gG and gM curves
gG and gM fuse-link selection
20000
4 hours
10000
gG
Pre-arcing time (sec)
1000
Fuse-link
rating (A)
100
10
1
0,1
0,005
1
10
100
1000
10000
100000
Prospective current (R.M.S. symmetrical A)
20000
4 heures
10000
gM
1000
Fuse-link
rating (A)
Temps
de préarc
(A)
Pre-arcing
time (s)
BS 88 industrial fuses - gG and gM curves
Time/current data
100
10
1
0,1
0,005
1
10
100
1000
Courant présumé
symétrique
en A)
A)
Prospective
current(R.M.S.
(R.M.S.
symmetrical
Curves from BS88 standard part 1 and 2 (sections 2.1 and 2.2) of 1988.
Voltage rating : 415 V. Interrupting rating : 80 kA under 415 V.
* Current ratings additional to BS88.
147
10000
100000
BS 88 industrial fuses - gG and gM curves
I2t characteristics
7
10
6
10
5
4
Operating I2t at 415 V.
Pre-arcing I2t
10
3
10
2
10
10
0
Fuse-link rating (amperes)
* Current ratings additional to BS88
Dissipated power
70
60
50
Power (Watts)
I2t (A2S)
10
40
BS 88 part 2 (Section 2.2) standardized limit
30
20
10
0
Fuse-link rating (Amperes)
* Current ratings additional to BS88
148
Maximum value of current (kA peak)
BS 88 industrial fuses - gG and gM curves
Peak let-through
current
Prospective current (kA R.M.S. symmetrical)
* Current ratings additional to BS88
Nominal current derating by temperature
Fuse-link
rating (A)
2, 4, 6, 10
16
20
25
32
40
50
63
80
100
125
160
200
250
315
355*
400
450*
500
560*
630
670*
710*
750*
800
Current carrying capability (in amperes) at elevated temperatures
40°C 45°C 50°C 55°C 60°C 65°C 70°C 75°C 80°C
FUSE-LINKS
FULLY RATED
620
660
700
740
780
610
640
680
730
760
390
445
490
550
590
620
660
710
740
195
240
310
345
380
430
480
530
570
600
640
690
720
155
190
230
300
335
370
410
460
510
550
580
620
670
700
23
31
39
49
61
79
98
122
150
185
220
290
320
350
390
440
490
530
560
600
650
680
18
21
30
38
48
59
78
96
119
145
180
210
270
300
330
370
420
470
510
540
580
630
660
15
16
19
29
37
47
57
76
94
116
140
175
200
250
280
310
350
400
450
490
520
560
600
640
149
Curves and derating comply with BS88 standard part 1
and 2 sections 2.1 and 2.2 of 1988.
* Derating also applies, to additional current ratings.
- When the fuse-link is mounted in the open, the elevated
temperature is the ambient air temperature (Ta).
- When the fuse-link is mounted in an enclosure, the elevated temperature is the internal “fluid environment temperature” (Te) within the enclosure.
When it is not known, it should be assumed to be 15°C
higher than the ambient air temperature external to the
enclosure, i.e. Te = Ta + 15°C.
Examples :
- 100 fuse-link mounted in the open at an ambient air temperature of 65°C. Current carrying capability = 100A.
- 200A fuse-link mounted in the open at an ambient air temperature of 60°C. Current carrying capability = 195A.
- 400A fuse-link mounted in an enclosure having an internal temperature of 65°C. Current carrying capability = 370A.
- 800A fuse-link mounted in an enclosure with an unknown internal temperature and an external ambient air temperature of
40°C. Assume the internal temperature is 55°C (40°C + 15°C).
Current carrying temperature = 740A.
• The fuse comply with standard EN 60269-2 section II and standard BS88 part 2.
• This fuses are designed for :
- “general purpose use” protection, (gG type)
- motor protection (gM type)
• This fuse range insures an excellent current limitation for all overloads on a large range of
applications.
Their size cannot allow exchange by other fuses
of higher rating in the F type range.
They are compact and can be connected with
clips.
Applications
Features
Power cable protection
Distribution panel protection
Control panel
Main circuit
Lighting, heating and electrical equipments
Capacitor, batteries
Can be used with circuit breakers.
Compact design
Curve gG and gM
Very current limiting
Tested in DC
Voltage 415VAC
High breaking capacity : 80kA @ 415VAC
Connection by clips or appropriate fuse holders.
Ratings
Approval
F1 type
from 2A to 32A
Asta 20 Certified
F2 type
from 10A to 63A
Fuses designations and ratings
F1 type
Type
F1
F1
F1
F1
F1
F1
F1
F1
F1*
F1*
F2 type
Rating
Ref. no
Designation
Pack.
2
4
6
10
16
20
25
32
20M25
20M32
S226336
T226337
V226338
W226339
X226340
Y226341
Z226342
A226343
B226344
C226345
2F1
4F1
6F1
10F1
16F1
20F1
25F1
32F1
20M25F1
20M32F1
10
10
10
10
10
10
10
10
10
10
* Selection table for gM fuses : refer to A, B and C types
150
Type
Rating
Ref. no
Designation
F2
F2
F2
F2
F2
F2
F2
F2
10
16
20
25
32
40
50
63
D226346
E226347
F226348
G226349
H226350
J226351
K226352
L226353
10F2
16F2
20F2
25F2
32F2
40F2
50F2
63F2
Pack.
10
10
10
10
10
10
10
10
BS 88 industrial fuses - gG and gM curves
Industrial fuses BS 88 gG and gM - F1 and F2 types
BS 88 industrial fuses - gG and gM curves
Dimensions
Ref.
BS 88
Current ratings (A)
Voltage (Vac)
F1
415V
2, 4, 6, 10, 16, 20, 25, 32, 20M25*, 20M32*
F2
415V
10, 16, 20, 25, 32, 40, 50, 63
A max
mm 35,5
in
1-2/5
mm
39
In
1-7/13
B max
14,3
9/16
17,5
11/16
Dimensions (mm)
D max
E max
62
11,5
2-7/16
9/20
69
15
2-13/8
9/16
F nom
0,8
1/32
1,4
1/18
N nom
3,5
1/8
3,5
1/8
* Current ratings additional to BS88 also comply to the BS 88 standard part 6 of 1988.
Time/current data
20000
4 hours
10000
Fuse-link ampere
rating
Pre-arcing time (sec.)
1000
100
10
1
0,1
0,01
0,005
1
10
100
1000
Prospective current (RMS symmetrical A)
151
10000
100000 Ip
7
10
6
10
5
10
4
10
3
Curves from BS88 standard part 6 of 1988.
Voltage rating : 415 VAC.
Interrupting rating : 40 kA
under 415 VAC.
ASTA 20 certified
* Current ratings additional to BS88 also comply
to the BS 88 standard part 6 of 1988.
Operating I2t at 415 V.
pre-arcing I2t
10
2
10
0
2
4
6
10
16
20
25
&
50
32 40
&
20
20
M
25 M32
*
$
63
Dissipated power
Fuse-link rating (Amperes)
5
Curves from BS88 standard part 6 of 1988.
Voltage rating : 415 VAC.
Interrupting rating : 40 kA
under 415 VAC.
Power (Watts)
* Current ratings additional to BS88 also comply to the BS 88 standard part 6 of 1988.
4
BS 88-part 6 standardized limit
3
2
1
Peak let-through current
0
Fuse-link rating (Amperes)
Curves from BS88 standard part 6 of 1988.
Voltage rating : 415 VAC.
Interrupting rating : 40 kA
under 415 VAC.
* Current ratings additional to BS88 also comply to
the BS 88 standard part 6 of 1988.
Prospective current (kA R.M.S. symmetrical)
152
BS 88 industrial fuses - gG and gM curves
10
Maximum value of current (kA)
I2t (A2S)
I2t characteristics