Energy Saving HRC Fuse-LinksCylindrical, Bolted & Blade Type
Larsen & Toubro is a technology-driven company that infuses
engineering with imagination. The Company offers a wide range
of advanced solutions in the field of Engineering, Construction,
Electrical & Automation, Machinery and Information Technology.
L&T Switchgear, a part of the Electrical & Automation business, is
India's largest manufacturer of low voltage switchgear, with the
scale, sophistication and range to meet global benchmarks. With
over five decades of experience in this field, the Company today
enjoys a leadership position in the Indian market with a growing
international presence.
It offers a complete range of products including powergear,
controlgear, industrial automation, building electricals &
automation, reactive power management, energy meters, and
protective relays. These products conform to Indian and
International Standards.
Switchgear Factory, Mumbai
Switchgear Factory, Ahmednagar
About us
Features & Benefits
L&T, India's largest manufacturer of low tension switchgear, offers the new generation of low watt loss HRC fuse-
links designed as per the new IS 13703 / IEC 60269 standards.
HRC Fuse-links Cylindrical & Blade Type
Type HF & HN
�HF 2 - 63A & HN 63 - 800A
Size 000 DIN Type
Low watt loss leading to power saving and cooler running of associated products like SDFs
Suitable fuse base & fuse pulling handle
� 80kA for HF Type & 100kA for HN Type
�Unique offerings: 63A Cylindrical Fuse
125A in
�Fuse blown indication: Through a red pop-up indicator
�Low let through energy
�
�Conform to IS 13703 (Part 2) / IEC 60269-2
�
High breaking capacity:
1
Type HG & HQ
�
�Fuse Size: F1 / A1 - A4 / B1 - B4 / C2 - C3 Sizes - from 2 Amp. to 630 Amp.
�Low watt losses that associated equipment runs cooler
�Can be used with FN series SDF suitable for Bolted type fuses
�
HG 2 - 32A & HQ 2 - 630A
ensuring
Suitable fuse base
�Breaking capacity: 80 kA at 415 V. for HG & HQ Fuses
2
Features & Benefits
HRC Fuse-links Bolted Type
Technical Data
Selection Chart for Blade Type Fuse-Links - HN
Rated Voltage : 415 V Rated Breaking Capacity : 100 kA at 415 V� �
Guidelines for selection
While selecting fuse-links, the following points should be considered :
� Fuse-links type HF & HN are suitable for system voltage up to 415 V+
� Select the suitable size and rating of fuse-link for switch-disconnector fuse unit as per the fuse selection chart
� Ensure that the breaking capacity of the fuse link is higher than the prospective fault current
� Fuses should be selected such that discrimination is achieved with other protective devices in the system
*Suitable fuse base & fuse pulling handle are detailed in following pages
3
HF 63A
HF 2A
Rated Voltage : 415 V Rated Breaking Capacity : 80 kA at 415 V� �
Selection Chart for Cylindrical Type Fuse-Links - HF
000
00
0
1
2
3
Rating (A) Cat. Nos.
Rated watt
loss
(W)
Suitable for S-D-F
Units type FN /
FNX or Equivalent
Size of the
fuse linkDescription
Watt loss
limits as
per IS 13703
(W)
2
4
6
8
10
16
20
25
32
40
50
63
Suitable for TypeFN 32 / 63 / FNX
32/ 63 S-D-F. Alsofor HCO 32 Fuse
base
Suitable for TypeFN 63/ FNX 63S-D-F Also for
HC 63 Fuse base
SF90144
SF90145
SF90146
SF90147
SF90148
SF90150
SF90151
SF90152
SF90142
SF90143
SF90158
SF90159
0.6
0.6
1.1
1.2
1.0
2.4
2.4
3.2
5.0
5.0
5.0
7.4
5
32, 63
32, 63
32, 63
32, 63
32, 63
32, 63
32, 63
32, 63
32, 63
63
63
63
Size
14x51
7
Size of the
fuse linkRating Cat. Nos.
Rated
watt loss (W)
Watt loss limits
as per IS 13703
Suitable for S-D-F units
type FN / FNX or Equivalent
100 Amp,
Fuse-7.5 W
630 Amp,
Fuse-48 W
400 Amp,
Fuse-34 W
250 Amp,
Fuse-23 W
160 Amp,
Fuse-16 W
80 A
100 A
125 A
160 A
200 A
125 A
160 A
200 A
250 A
315 A
200 A
250 A
315 A
400 A
315 A
400 A
500 A
630 A
800 A
SF94128
SF94129
SF94130
SF94131
SF94132
SF94230
SF94231
SF94232
SF94233
SF94234
SF94332
SF94333
SF94334
SF94335
SF94434
SF94435
SF94436
SF94437
SF94938
8.3
9.1
11.3
12.7
14.5
10.3
12.3
14.3
17.3
25.5
14.1
16.9
20.2
24.9
20.5
26.7
36.1
42.2
48
100, 125, 160
100, 125, 160
100, 125, 160
100, 125, 160
100, 125, 160
100, 125, 160
100, 125, 160
125, 160
160
200
200
200
200
200
250, 315
250, 315
250, 315
250, 315
315
400
400
400
400
630, 800
630, 800
630, 800
630, 800
800
Size 000
Size 00
Size 0
Size 1
Size 2
Size 3
100 Amp,
Fuse-7.5 W
63 A
80 A
100 A
125 A
63 A
80 A
100 A
125 A
160 A
SF94940
SF94941
SF94942
SF94946
SF94027
SF94028
SF94029
SF94030
SF94939
5.3
6.2
7
8.5
5.7
6.9
7.5
9.8
12
4
Fuse holders , Fuse bases &
Cylindrical / DIN fuse-links
Fuse pulling handle suitable for
� Rated Voltage : 415 V � 80 kA � Utilisation Category : gG Rated Breaking Capacity :
Selection Chart for Bolted type
HB
HCO
32
63
160
250
800
2-63
63-800
HCO 32
HC 63
HB 160
HB 250
HB 800
HF
HN
Fuse holder
Fuse holder
Fuse base
Fuse base
Fuse base
Fuse pulling handle
Fuse pulling handle
HF
HF
HN-Size 000 & 00
HN-Size 0 & 1
HN-Size 2 & 3
HF
HN
2-32
2-63
63-160
80-250
200-800
2-63
63-800
SK91314
SK91043
SK90405
SK90406
SK91051
SK91185
SF90126
Suitable fuse-link
Type Range (A)
Rated
Current
(A)
Type Description Cat. No.
F1
A1
A1 L
A2
A3
Fixing
Method Size
Rating
(A) Description
Power
loss (W)
Watt loss
limits as per
IS 13703
Cat. No.
4
6
10
16
20
25
32
20
25
32
50
63
4
6
10
16
20
25
32
35
50
63
80
100
125
160
2 ST30736
ST30737
ST30738
ST30739
ST30740
ST30741
ST30742
ST30743
ST34527
ST34528
ST34529
ST35827
ST35828
ST30747
ST30748
ST30749
ST30750
ST30751
ST30752
ST30753
ST30759
ST30760
ST30761
ST30767
ST30768
ST30769
ST35829
0.3
0.5
1.2
1.4
1.8
2.2
2.9
3.0
2.4
3.1
3.4
4.0
4.7
0.8
1.4
1.5
2.0
2.8
3.8
4.4
4.5
6.2
6.8
9.1
9.5
14
-
32 A,
Fuse -
3.2W
20 A,
Fuse -
2.7W
20 A,
Fuse -
3.2W
32 A,
Fuse -
4.4W
63 A,
Fuse -
6.9W
100 A,
Fuse -
9.1W
Offset,
stag-
gered
Offset
Suitable for type HD20H/20P/20B, HD
32H/32P/32B Fuse base
Suitable for type FN32/63 Switch
disconnector Fuse unit
Suitable for type FN 100Switch disconnector
Fuse unit, also for HK63B/63H Fuse base
Suitable for type FN100/125/160 Switch
disconnector Fuse unit,also for HK 125H/125B
Fuse base
A1
F1
A1L
A2
A3
A4
Suitable for type HK32H/32B
Fuse base
2
4
6
10
16
20
25
32
ST30725
ST30726
ST30727
ST30728
ST30729
ST30730
ST30731
ST30732
0.3
0.5
1.2
1.4
1.8
2.2
2.9
3.0
Fuse holders suitable for bolted fuse-links
5
Rated
CurrentType
Connection
Method
Fuse
Type
Suitable
Fuse
Range (A) Cat. No.
HD 20H
HD 20P
HD 20B
HD 32H
HD 32P
HD 32B
HK 32H
HK 32B
HK 63H
HK 63B
HK 125H
HK 125B
Both side cable
Both side busbar
Top side busbar & bottom cable
Both side cable
Both side busbar
Top busbar & bottom cable
Both side cable
Top busbar & bottom cable
Both side cable
Top busbar & bottom cable
Both side cable
Top busbar & bottom cable
F1
F1
F1
F1
F1
F1
A2
A2
A3
A3
A4
A4
2-20
2-20
2-20
2-32
2-32
2-32
4-32
4-32
35-63
35-63
80-125
80-125
ST30772
ST30773
ST30766
ST30733
ST30734
ST30735
ST30754
ST30755
ST30762
ST30763
ST30770
ST30771
20
32
125
63
HD 32H HK 32H HK 63H HK 125H
� Rated Voltage : 415 V � 80 kA � Utilisation Category : gG Rated Breaking Capacity :
Selection Chart for Bolted type Fuse Links - HG & HQ
B1
B2
B3
B4
C2
Fixing
Method Size
Rating
(A) Description
Power
loss W
Watt loss
limits as per
IS 13703
Cat. No.
Suitable for type FN 630
Switch disconnector
Fuse unit
B1
B3
B4
C3
Suitable for type FN 200
Switch disconnector
Fuse unit
80
100
125
125
160
200
ST30774
ST30775
ST30776
ST30777
ST30778
ST30779
9.2
10.5
16.0
15.0
19.5
20.5
Suitable for type FN
200/250 Switch discon-
nector Fuse unit
Suitable for type FN
250/315 Switch discon-
nector Fuse
Suitable for type FN 400
Switch disconnector
Fuse unit
355
400
ST30783
ST30784
34
38
400
500
630
630
ST30785
ST30786
ST30787
ST30788
38
50
55
55
Centre
Tag, 2
holes
Centre
Tag, 4
holes
C2
100 A,
Fuse -
9.1W
200 A,
Fuse -
17W
250 A,
Fuse -
32W
400 A,
Fuse -
40W
630 A,
Fuse -
55W
B2
250
315
ST30781
ST30782
28
32
-
HF Fuse-link
HN Fuse-link
All dimensions are in mm
Overall Dimensions
51
Indicator
14
.3
Size 000
20 6 10 6
42.4
51.8
2.9
45.5
51
79
8
15
67.6
62 2.8
125
14
15.4
Size 0
47
39
6
35
10
2.9
6
10
20
49.6
45.6 2
9.5
15.4
78.4 72
6
34
35
9.5
2.5
6
10
71
Size 00
67.2
61 3.1
A
B
C
D
20
10
6
2.5
10
6F
E
Size 1 / 2 / 3
Type
Size 1
Size 2
Size 3
A
20.4
25.4
32.4
B
135
150
150
C
11.0
14.0
17.5
D
46
59
73
E
40
48
60
F
46
59
73
6
All dimensions are in mm
Overall Dimensions
67
44
82
Typ
e H
C*
63
A 4
15
Va
c
25
129
105
25O7.5
22
60
33
HB 250
HB 800
25
53
19
210
60
O10.5
30
40
25
155
207
80+3-0
155
88
39
.5
2 Holes Ø10.5 for M10
for Mounting
175
60
40
6426
12
30
2 Holes Ø9 for M8
for Mounting
HCO / HC HB 160
7
HQ, SIZE A1 HQ, SIZE A1L
HQ, SIZE A2 HQ, SIZE A4HQ, SIZE A3
Ø23
8.7
55
73
85
5.523.6
57
1.2
23.6
10
35
.5
14.04.2
33.5
44.5
54.5
Ø23
12.7
55
73
89
.5
5.523.6
57
33.5
2.5
Ø31.6
19
8.7
65.5
94
110
10
HQ, SIZE B1
O31.5
3.2
19
8.7
64
111
13
1.5
HQ, SIZE B2
Ø39
3.2
11
70.5
111
13
1.5
8.7
19
HQ, SIZE B3
Ø50
3.2
25.3
8.7
71.5
111
13
1.5
11
HQ, SIZE B4
25.3
8.7
73
111
13
1.5
11
Ø50
5
HQ, SIZE C2
25.4
10.3
25
.41
33
211
25.4
16
.5
6.5
75
.5
6.5
Ø70
11.20
35.5
33.5
55
10
Ø13.2
HG, SIZE F1
38
.2
18.7
4.2
65
54.5
36
11
Ø17.5Ø13.2
All dimensions are in mm
Overall Dimensions
8
==
==
111
65.7
75
1.
25.2
69
2.
105
77.544
8 15.6
16
8.
35
7. 5
2x11
.5 R8.4
2x5.5
35
5.
==
23
M8
13
9
35.7
M1
0
62.5
72.1
51
5.
==
142.7
90.2
31
5.
131.7
53
9.
30
25
5.
9419.5
15
5.
==
22
15
4x4
5
4.4
7.67.6
30.05 515
.
12
51.5
2x8
18
80.5
58
25
14
5.
3.8
67.9
74
3
32
.844
.3
.2
34
47.7
20
15
10
613.6
R7.5 10
6.717.5
25
8.5
M4
5
HD 20 / HD 32
103.5
65.4
31
5.
17
5.
25
60
98.2
14
8.
5
3.5
3.5
14.8
= =
72.7
11.3
R.4
7
.3
8
2x55.
20
==
9
6.4 M6
31
5.
=
=
31
.5
HK 32
HK 63 HK 125
All dimensions are in mm
Overall Dimensions
9
Time-Current Characteristics
Cut-off Current Characteristics
Symmetrical Current (A)
Pre
-arc
ing
Tim
e (
se
co
nd
s)
4
4
2
2
4
2
4
2
4
2
4
2
4
0.01
0.1
1
10
100
1000
2 3 4 5 2 3 4 5 2 3 4 5 2 3 4 510 100 1000
2 A
4 A
6 A
8 B
10
A
16
A
20
A2
5 A
32
A4
0 A
50
A6
3 A
Prospective Current - kA (RMS) Symmetrical
Cu
t-o
ff C
urr
en
t-ka
(p
ea
k)
(asym
me
tric
al F
au
lt C
on
ditio
ns)
63 A
50 A32 A20 A
40 A25 A
16 A
8 A
6 A
4 A
2 A
10 A
10
1.0
0.1
0.01 0.1 1.0 1082 4 6 8 2 4 6 8 2 4 6 8 2 4 6
HRC Fuse-links Type HF
Characteristics Curve
10
HRC Fuse-links Type HN
Time-Current Characteristics
Cut-off Current Characteristics
4
0.01
2
4
0.1
2
4
1
2
4
10
2
4
100
2
4
1000
2
4
10000
2 3 4 5 10 2 3 4 5 100 1 2 3 4 5 1000 2 3 4 5 10000 3 4 5
63
A
80
A
10
0 A
12
5 A
16
0 A
20
0 A
25
0 A
31
5 A
40
0 A
40
0 A
63
0 A
80
0 A
800 A630 A
500 A600 A315 A250 A
200 A160 A
125 A100 A80 A63 A
20.1
51
2 510
2 5 8100
100
5
2
10
5
2
1
5
2
0.1
Prospective Current - kA (RMS) Symmetrical
Cu
t-o
ff C
urr
en
t-ka
(p
ea
k)
(asym
me
tric
al F
au
lt C
on
ditio
ns)
Pre
-arc
ing
Tim
e (
se
co
nd
s)
Symmetrical Current (A)
Characteristics Curve
11
*35
5 A
2 A
4 A
6 A
10
A
16
A2
0 A
25
A3
2 A
50
A6
3 A
80
A1
00
A1
25
A1
60
A
20
0 A
25
0 A
31
5 A
40
0 A
50
0 A
63
0 A
200004 hours 10000
1000
100
10
1
0.1
0.01
0.005
1 10 100 1000 10000 100000
HRC Fuse-links Type HQ
Time-Current Characteristics
Cut-off Current Characteristics
0.10.1
1
10
100
1 10 100
2 A
4 A
6 A
10 A
16 A
20 A25 A32 A
50 A63 A
80 A100 A125 A160 A200 A250 A315 A *355 A400 A
630 A500 A
Prospective Current - kA (RMS) Symmetrical
Cu
t-o
ff C
urr
en
t-ka
(p
ea
k)
(asym
me
tric
al F
au
lt C
on
ditio
ns)
Pre
-Arc
ing
Tim
e (
Se
co
nd
s)
Symmetrical Current (A)
Characteristics Curve
12
Note
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SP 01955 R2 260213
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