NH KNIFE BLADE
NH fuses are typically used for power
distribution applications and to protect
large electrical devices such as motors,
drives, etc. They are available in seven
sizes with a current range of 2 to 1600
Amps.
NH fuses have knife blades at both ends,
which mount into Fuse Bases. Fuse
Bases are available in one or three pole
designs and can be panel or DIN rail
mounted.
Please refer to pg 19 for NH Fuse
Accessories.
Operating Classes
gL/gG - Line Protection
Slow, typically used for distribution
circuits or resistive loads.
NH00 (NHC00)
3
Ordering Information
Operating Class gL / gG
(VDE 0636 / IEC 269)
Line Protection up to 500V AC
(660V available)
Current/
Voltage
2/500V AC
4/500V AC
6/500V AC
10/500V AC
16/500V AC
20/500V AC
25/500V AC
32/500V AC
35/500V AC
40/500V AC
50/500V AC
63/500V AC
80/500V AC
100/500V AC
125/500V AC
160/500V AC
2/660V AC
4/660V AC
6/660V AC
10/660V AC
16/660V AC
20/660V AC
25/660V AC
32/660V AC
35/660V AC
40/660V AC
50/660V AC
63/660V AC
80/660V AC
100/660V AC
125/500V AC
160/500V AC
16/660V AC
20/660V AC
25/660V AC
32/660V AC
35/660V AC
40/660V AC
50/660V AC
63/660V AC
80/660V AC
100/660V AC
125/660V AC
160/660V AC
Cat. No.
2NH00GL
4NH00GL
6NH00GL
10NH00GL
16NH00GL
20NH00GL
25NH00GL
32NH00GL
35NH00GL
40NH00GL
50NH00GL
63NH00GL
80NH00GL
100NH00GL
125NH00GL
160NH00GL
2NH00AM-6
4NH00AM-6
6NH00AM-6
10NH00AM-6
16NH00AM-6
20NH00AM-6
25NH00AM-6
32NH00AM-6
35NH00AM-6
40NH00AM-6
50NH00AM-6
63NH00AM-6
80NH00AM-6
100NH00AM-6
125NH00AM
160NH00AM
16NH00GR-6
20NH00GR-6
25NH00GR-6
32NH00GR-6
35NH00GR-6
40NH00GR-6
50NH00GR-6
63NH00GR-6
80NH00GR-6
100NH00GR-6
125NH00GR-6
160NH00AR-6
1
1
1
1
1
1
1
1
1
1
1
Dim.
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
Std. Pk.
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Typical Marking: gL/gG
aM - Motor Protection
Fast acting short circuit protection, but
slow acting overload protection.
NH00 Fuses Operating Class gL / gG are
available in 660V, and with insulated tags.
Typical Marking: aM
Green imprint.
aR - Semiconductor Protection
Partial range, short circuit protection for
devices such as diodes, SCRs, etc.
Operating Class aM
(VDE 0636 / IEC 269)
Motor Protection up to 660V AC
Typical Markings: Ultra Rapid™,
Sitor™, Silcu™, Protistor™,
Recticur™, Ultra Quick
TM
, aR,
gR - Semiconductor Protection
Full range overload and short circuit
protection for devices such as diodes,
SCRs, etc.
Typical Markings: Ultra Rapid™,
Sitor™, Silcu™, Protistor™,
Recticur™, Ultra Quick
TM
,
gR,
Mostly red, orange or blue imprint.
Super Fast Blow Operating Class aR / gR
(VDE 0636 / IEC 269)
Semiconductor Protection up to 660V AC
(1000V available)
F
L
2
1
Also available in Operating Class aR.
Also available in 1000V. Designate suffix “-1”
(ex. 32NH0GR-1).
Size NHC00 will be supplied in place of
NH00 at manufacturer discretion.
Knife blade is available with screw holes, please
designate a “B” after the size, (ex. 250NH3BAR-6).
L
1
W
11.5
C
D
2
3
4
T
16
Altech Corp.
®
q
35 Royal Road Flemington NJ 08822-6000
q
Phone (908) 806-9400
q
Fax (908) 806-9490
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NH0
Current/
Voltage
10/500V AC
16/500V AC
20/500V AC
25/500V AC
32/500V AC
35/500V AC
40/500V AC
50/500V AC
63/500V AC
80/500V AC
100/500V AC
125/500V AC
160/500V AC
200/500V AC
Cat. No.
10NH0GL
16NH0GL
20NH0GL
25NH0GL
32NH0GL
35NH0GL
40NH0GL
50NH0GL
63NH0GL
80NH0GL
100NH0GL
125NH0GL
160NH0GL
200NH0GL
Dim.
B
B
B
B
B
B
B
B
B
B
B
B
B
B
Std. Pk.
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Current/
Voltage
16/500V AC
20/500V AC
25/500V AC
32/500V AC
35/500V AC
40/500V AC
50/500V AC
63/500V AC
80/500V AC
100/500V AC
125/500V AC
160/500V AC
200/500V AC
224/500V AC
250/500V AC
NH1
Cat. No.
16NH1GL
20NH1GL
25NH1GL
32NH1GL
35NH1GL
40NH1GL
50NH1GL
63NH1GL
80NH1GL
100NH1GL
125NH1GL
160NH1GL
200NH1GL
224NH1GL
250NH1GL
Dim.
C
C
C
C
C
C
C
C
C
C
C
C
D
D
D
Std. Pk.
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Current/
Voltage
35/500V AC
40/500V AC
50/500V AC
63/500V AC
80/500V AC
100/500V AC
125/500V AC
160/500V AC
200/500V AC
224/500V AC
250/500V AC
300/500V AC
315/500V AC
355/500V AC
400/500V AC
425/500V AC
35/500V AC
40/500V AC
50/500V AC
63/500V AC
80/500V AC
100/500V AC
125/500V AC
160/500V AC
200/500V AC
224/500V AC
250/500V AC
315/500V AC
355/500V AC
400/500V AC
NH2
Cat. No.
35NH2GL
40NH2GL
50NH2GL
63NH2GL
80NH2GL
100NH2GL
125NH2GL
160NH2GL
200NH2GL
224NH2GL
250NH2GL
300NH2GL
315NH2GL
355NH2GL
400NH2GL
425NH2GL
35NH2AM
40NH2AM
50NH2AM
63NH2AM
80NH2AM
100NH2AM
125NH2AM
160NH2AM
200NH2AM
224NH2AM
250NH2AM
315NH2AM
355NH2AM
400NH2AM
Dim.
E
E
E
E
E
E
E
E
E
E
E
E
F
F
F
F
E
E
E
E
E
E
E
E
E
E
E
F
F
F
Std. Pk.
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
10/500V AC
16/500V AC
20/500V AC
25/500V AC
32/500V AC
35/500V AC
40/500V AC
50/500V AC
63/500V AC
80/500V AC
100/500V AC
125/500V AC
160/500V AC
10NH0AM
16NH0AM
20NH0AM
25NH0AM
32NH0AM
35NH0AM
40NH0AM
50NH0AM
63NH0AM
80NH0AM
100NH0AM
125NH0AM
160NH0AM
B
B
B
B
B
B
B
B
B
B
B
B
B
3
3
3
3
3
3
3
3
3
3
3
3
3
16/500V AC
20/500V AC
25/500V AC
32/500V AC
35/500V AC
40/500V AC
50/500V AC
63/500V AC
80/500V AC
100/500V AC
125/500V AC
160/500V AC
200/500V AC
224/500V AC
250/500V AC
16NH1AM
20NH1AM
25NH1AM
32NH1AM
35NH1AM
40NH1AM
50NH1AM
63NH1AM
80NH1AM
100NH1AM
125NH1AM
160NH1AM
200NH1AM
224NH1AM
250NH1AM
C
C
C
C
C
C
C
C
C
C
C
C
D
D
D
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
16/660V AC
20/660V AC
25/660V AC
32/660V AC
40/660V AC
50/660V AC
63/660V AC
80/660V AC
100/660V AC
125/660V AC
160/660V AC
2
2
2
2
2
2
2
2
16NH0GR-6
20NH0GR-6
25NH0GR-6
32NH0GR-6
40NH0GR-6
50NH0GR-6
63NH0GR-6
80NH0GR-6
100NH0GR-6
125NH0GR-6
160NH0AR-6
B
B
B
B
B
B
B
B
B
B
B
3
3
3
3
3
3
3
3
3
3
3
16/660V AC
20/660V AC
25/660V AC
2
32/660V AC
2
35/660V AC
2
40/660V AC
2
50/660V AC
2
63/660V AC
2
80/660V AC
2
100/660V AC
2
125/660V AC
2
160/660V AC
2
200/660V AC
2
224/660V AC
2
250/660V AC
2
315/500V AC
16NH1GR-6
20NH1GR-6
25NH1GR-6
4
32NH1GR-6
4
35NH1GR-6
4
40NH1GR-6
4
50NH1GR-6
4
63NH1GR-6
4
80NH1GR-6
4
100NH1GR-6
4
125NH1GR-6
4
160NH1AR-6
4
200NH1AR-6
4
224NH1AR-6
4
250NH1AR-6
4
315NH1AR-6
C
C
C
C
C
C
C
C
C
C
C
C
D
D
D
D
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
32/660V AC
40/660V AC
50/660V AC
63/660V AC
80/660V AC
100/660V AC
125/660V AC
160/660V AC
200/660V AC
250/660V AC
280/660V AC
315/660V AC
355/660V AC
400/660V AC
32NH2GR-6
40NH2GR-6
50NH2GR-6
63NH2GR-6
80NH2GR-6
4
100NH2GR-6
4
125NH2GR-6
4
160NH2AR-6
4
200NH2AR-6
4
250NH2AR-6
4
280NH2AR-6
4
315NH2AR-6
4
355NH2AR-6
4
400NH2AR-6
4
E
E
E
E
E
E
E
E
E
E
E
F
E
F
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Approximate Dimensions for NH Fuses mm (in.)*
NH
Size/Dim.
C00
00/A
0/B
1/C
1/D
2/E
2/F
Overall
Length (L
1
)
79(3.11)
79(3.11)
125 (4.92)
135 (5.31)
135 (5.31)
150 (5.91)
150 (5.91)
Body
Length (L
2
)
53 (2.09)
52 (2.05)
65 (2.56)
65 (2.56)
65 (2.56)
65 (2.56)
65 (2.56)
Body
Depth (D)
40 (1.57)
42.5 (1.67)
42 (1.65)
42 (1.65)
48 (1.89)
48 (1.89)
60 (2.36)
Body
Width (W)
21 (0.83)
28 (1.10)
29 (1.14)
29 (1.14)
40 (1.57)
40 (1.57)
53 (2.10)
Blade
Width (T)
6 (0.24)
6 (0.24)
6 (0.24)
6 (0.24)
6 (0.24)
6 (0.24)
6 (0.24)
Blade
Thickness (C)
15 (0.59)
15 (0.59)
15 (0.59)
15 (0.59)
20 (0.79)
20 (0.79)
26 (1.02)
Fixing
Center (F)
110 (4.33)
110 (4.33)
110 (4.33)
110 (4.33)
110 (4.33)
110 (4.33)
110 (4.33)
*Dimensions to DIN 43620 refer to diagram on pg 16
Altech Corp.
®
q
35 Royal Road Flemington NJ 08822-6000
q
Phone (908) 806-9400
q
Fax (908) 806-9490
q
www.altechcorp.com
17
NH KNIFE BLADE
NH 3
Ordering Information
Operating Class gG / gL
(VDE 0636 / IEC 269)
Line Protection up to 500V AC
(660V Available)
Current/
Voltage
224/500V AC
250/500V AC
300/500V AC
315/500V AC
355/500V AC
400/500V AC
500/500V AC
630/500V AC
Cat. No.
224NH3GL
250NH3GL
300NH3GL
315NH3GL
355NH3GL
400NH3GL
500NH3GL
630NH3GL
Dim.
F
F
F
F
F
F
G
G
Std. Pk.
3
3
3
3
3
3
3
3
Current/
Voltage
400/500V AC
5
500/500V AC
5
630/500V AC
5
710/500V AC
800/500V AC
5
850/500V AC
900/500V AC
1000/500V AC
1250/500V AC
1600/500V AC
NH 4
Cat. No.
400NH4GL
500NH4GL
630NH4GL
710NH4GL
800NH4GL
850NH4GL
900NH4GL
1000NH4GL
1250NH4GL
1600NH4GL
Dim.
H
H
H
H
H
H
H
H
H
I
Std. Pk.
1
1
1
1
1
1
1
1
1
1
Operating Class aM
(VDE 0636 / IEC 269)
Motor Protection up to 660V AC
224/500V AC
250/500V AC
300/500V AC
315/500V AC
355/500V AC
400/500V AC
500/500V AC
630/500V AC
224NH3AM
250NH3AM
300NH3AM
315NH3AM
355NH3AM
400NH3AM
500NH3AM
630NH3AM
F
F
F
F
F
F
G
G
3
3
3
3
3
3
3
3
400/500V AC
400NH4AM
500/500V AC
500NH4AM
630/500V AC
5
630NH4AM
800/500V AC
5
800NH4AM
1000/500V AC
5
1000NH4AM
1250/500V AC
1250NH4AM
H
H
H
H
H
H
1
1
1
1
1
1
Operating Class aR
(VDE 0636 / IEC 269)
Semiconductor Protection up to 660V AC
(1000V Available)
4
Knife blade is available with screw holes, please
designate a “B” after the size, (ex. 250NH3BAR-6).
Also available in 660VAC, please consult Altech.
250/660V AC
280/660V AC
300/660V AC
315/660V AC
355/660V AC
400/660V AC
500/660V AC
560/660V AC
630/660V AC
250NH3AR-6
4
280NH3AR-6
4
300NH3AR-6
4
315NH3AR-6
4
355NH3AR-6
4
400NH3AR-6
4
500NH3AR-6
4
560NH3AR-6
4
630NH3AR-6
4
F
F
F
F
F
F
G
G
G
3
3
3
3
3
3
3
3
3
5
For Accessories, please refer to pg 19
For Accessories, please refer to pg 19
Approximate Dimensions for NH Fuses mm (in.)*
NH
Overall
Size/Dim. Length (L
1
)
3/F
3/G
4/H
4/I
150 (5.91)
150 (5.91)
200 (7.87)
200 (7.87)
Body
Length (L
2
)
65 (2.56)
65 (2.56)
65 (2.56)
87 (3.42)
Body
Depth (D)
Body
Blade
Width (W) Thickness (T)
6 (0.24)
6 (0.24)
8 (0.31)
8 (0.31)
Blade
Depth (C)
26 (1.02)
32 (1.26)
50 (1.97)
50 (1.97)
Fixing
Center (F)
110 (4.33)
110 (4.33)
150 (5.91)
150 (5.91)
60 (2.36) 53 (2.10)
70 (2.75) 62 (2.44)
110 (4.33) 102 (4.01)
110 (4.33) 102 (4.01)
*Dimensions to DIN 43620 refer to diagram on pg 16
18
Altech Corp.
®
q
35 Royal Road Flemington NJ 08822-6000
q
Phone (908) 806-9400
q
Fax (908) 806-9490
q
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NH FUSE
ACCESSORIES
FUSE BASE
Fuse Bases hold fuses in place and
insure proper electrical connections.
Available in one or three pole designs.
Three-pole Fuse Bases are supplied
with two Separator Plates which should
be installed between poles. We recom-
mend the use of End Plates and
Terminal Covers for increased safety.
Fuse Base
No. of
Poles
1
3
1
1
3
1
3
1
1
1
1
Cat. No.
NHB00-1
NHB00-3
NHB0-1
NHB1-1
NHB1-3
NHB2-1
NHB2-3
NHB3-1
NHB4-1
NHB4A-1
NHSMB
Length
mm (in.)
122 (4.80)
139 (5.47)
170 (6.69)
202 (7.95)
214 (8.42)
227 (8.94)
260 (10.24)
242 (9.53)
310 (12.20)
338 (13.31)
146 (5.75)
Use With
Fuse(s)
NH00
NH00
NH0
NH1
NH1
NH2
NH2
NH3
NH4
NH4A
NH00SM
Cat. No.
Fuse End Plate
Approx.Dim. mm (in.) Use With
Width
Length Fuse Base(s)
NHB00-1-3
END PLATE
End Plates increase safety and provide
separation between devices. Install by
inserting End Plate into mounting entry
slot on right or left side of Fuse Base.
We recommend installing one End Plate
on each side of the Fuse Base.
NHEP00
62 (2.44) 121 (4.76)
NHEP0
NHEP1
62 (2.44) 180 (7.09)
62 (2.44) 214 (8.42)
NHB0-1-3
NHB1-1-3
TERMINAL COVER
Covers increase safety by covering the
conducting metal hardware of the Fuse
Base and the Fuse. We suggest
Terminal Covers be used in conjunction
with End Plates. To install slide Terminal
Cover over terminal slot and snap in
place.
NHEP2
90 (3.54) 260 (10.24)
NHB2-1-3
NHEP3
101 (3.98) 242 (9.53)
NHB3-1-3
MICROSWITCH
Microswitches can be field mounted on
NH fuses for remote blown fuse indica-
tion. (Sketch below)
Microswitch
Microswitch
Fuse
Cat. No.
NHMS
Current/
Voltage
Use With
Fuse(s)
Cat. No.
NHTC00
Terminal Cover
Use With
Fuse Base(s)
NHB00-1-3
5/250V AC NH Knife Blade
(SPDT) or NH Stud Mount
(All Sizes)
FUSE HANDLE
We strongly suggest using the Fuse
Handle when inserting or removing fuses
from the Fuse Base to prevent electrical
shocks. For increased safety, use Fuse
Handle with integral safety glove. Both
Fuse Handles are for use with NH-Knife
Blade Fuses, NH00 - NH4.
Cat. No.
NHHA
NHSG
Description
Fuse Handle
Fuse Handle
with Safety Glove
Fuse Handle
For maximum protection use Fuse Handle with
integral safety glove, not shown.
Altech Corp.
®
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19
NH STUD MOUNT
Semiconductor
Semiconductor Fuses have extremely
fast acting trip characteristics and
provide short circuit and overload
protection for diodes, SCR's etc. Current
limiting, super fast blow.
Semiconductor Fuses offered comply
with IEC, DIN and VDE standards and
are available in two trip characteristics,
defined below.
For Accessories, please refer to pg 19 for
NH Fuses.
Operating Classes
(VDE 0636 / IEC 269)
gR - Full Range Protection
Overload and short circuit protection.
USA
upon request
NH00C/SM
Stud Mount
sp
Class gR
Current/
Voltage
16/660V AC
20/660V AC
25/660V AC
32/660V AC
40/660V AC
50/660V AC
63/660V AC
80/660V AC
100/660V AC
125/660V AC
Cat. No.
16SM00CGR
20SM00CGR
25SM00CGR
32SM00CGR
40SM00CGR
50SM00CGR
63SM00CGR
80SM00CGR
100SM00CGR
125SM00CGR
Std. Pk.
3
3
3
3
3
3
3
3
3
3
Current/
Voltage
NH00C/SM-L
Stud Mount with
Microswitch Holder
Class gR
Cat. No.
16SM00CGR-L
20SM00CGR-L
25SM00CGR-L
32SM00CGR-L
35SM00CGR-L
40SM00CGR-L
50SM00CGR-L
63SM00CGR-L
80SM00CGR-L
100SM00CGR-L
125SM00CGR-L
Std. Pk.
3
3
3
3
3
3
3
3
3
3
3
Typical Markings: Ultra Rapid™, Silcu™,
Recticur™, Protistor™, Ultra Quick
TM
, gR
Mostly red, orange, or blue imprint.
1
1
1
1
1
1
aR - Partial Range Protection
Short circuit protection only. Faster acting
than full range fuses.
16/660V AC
20/660V AC
25/660V AC
32/660V AC
35/660V AC
40/660V AC
50/660V AC
63/660V AC
80/660V AC
100/660V AC
125/660V AC
Typical Markings: Ultra Rapid™, Silcu™,
Recticur™, Protistor™, Ultra Quick
TM
, aR
Class aR
Mostly red, orange, or blue imprint.
160/660V AC
1
200/660V AC
1
250/660V AC
1
315/500V AC
1
160SM00CAR
200SM00CAR
250SM00CAR
315SM00CAR
3
3
3
3
160/660V AC
180/660V AC
Class aR
160SM00CAR-L
180SM00CAR-L
3
3
Microswitch
D
E
A
1
UL recognized version available upon request. UL
rated at 700VAC.
2
Also available in operating class aR.
20
Altech Corp.
®
q
35 Royal Road Flemington NJ 08822-6000
q
Phone (908) 806-9400
q
Fax (908) 806-9490
q
www.altechcorp.com
