AMP-TRAP
®
–Form 101
A25X
SEMICONDUCTOR PROTECTION FUSES
A25X Amp-trap
®
Form 101 Semiconductor Protection
fuses were designed for heavy duty rectifiers such as
those used in the electro-chemical industry. Originally
designed for diode protection, A25X fuses have been
particularly reliable in heavy duty applications of many
types.
Note: Recommended as replacement fuses only
Features / Benefits
➤
Low l
2
t
minimizes damage to protected component on
short circuit
➤
Controlled arc voltage
reduces stress to circuit
components during fuse clearing
➤
Choice of mounting types
helps in
equipment design
Ratings
➤
AC:
10-30A
300VAC, 50kA I.R.
35-60A
250 VAC, 100kA I.R.
70-800A
250VAC, 10,600 A I.R.
1000-4500A
250VAC
Approvals
➤
UL Recognized
Component
➤
AC: UL Guide No.
JFHR2 (10-250A)
HIGHLIGHTS:
➤
Fast Acting
➤
Current Limiting
➤
Low l t
➤
Indicator Options
2
APPLICATIONS:
➤
Protection of 250 volt
heavy duty rectifiers
and similar heavy
power supplies
Catalog Numbering System
Amp-trap
®
Fuse
Rated Volts - 250
Style
Amperes*
A
25
X
600
1
4
128
A 25 X 600 - 4 TI
Available
Single Pole Fuse Blocks for A25X Fuses
FUSE
AMPERE
RATING
1-30
31-60
61-100
101-200
201-400
401-700
FUSE BLOCK
CATALOG
NUMBER
20306
P243G
P243
P243
P243G
P243G
Mounting Types*
Ferrule
Blades, bolt-in
Hockey puck, bolt-in
Integral Blown-Fuse
Indicator
Trigger Indicator
Trigger Actuator
TI
TA
* For ampere ratings and types not listed, consult the factory.
D6
AMP-TRAP
®
–Form 101
A25X
AMPERE
RATING
1
2
3
4
5
6
7
8
9
10
12
15
20
25
30
35
40
50
60
70
80
CATALOG
NUMBER
A25X1-1
A25X2-1
A25X3-1
A25X4-1
A25X5-1
A25X6-1
A25X7-1
A25X8-1
A25X9-1
A25X10-1
A25X12-1
A25X15-1
A25X20-1
A25X25-1
A25X30-1
A25X35-4
A25X40-4
A25X50-4
A25X60-4
A25X70-4
A25X80-4
OUTLINE AMPERE
FIG.
RATING
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
3
3
90
100
100
100
125
130
150
150
150
175
200
200
200
225
250
250
300
300
300
350
400
SEMICONDUCTOR PROTECTION FUSES
CATALOG
NUMBER
A25X90-4
A25X100-4
A25X100-4TA
A25X100-4TI
A25X125-4
A25X130-4
A25X150-4
A25X150-4TA
A25X150-4TI
A25X175-4
A25X200-4
A25X200-4TA
A25X200-4TI
A25X225-4
A25X250-4
A25X250-4TI
A25X300-4
A25X300-4TA
A25X300-4TI
A25X350-4
A25X400-4
OUTLINE AMPERE
FIG.
RATING
3
3
4
3
3
3
3
4
3
3
3
4
3
3
3
3
3
4
3
3
3
400
400
450
500
500
500
550
600
600
600
700
700
800
800
800
1000
1000
1200
1500
1500
1600
CATALOG
NUMBER
A25X400-4TA
A25X400-4TI
A25X450-4
A25X500-4
A25X500-4TA
A25X500-4TI
A25X550-4
A25X600-4
A25X600-4TA
A25X600-4TI
A25X700-4
A25X700-128
A25X800-4
A25X800-4TA
A25X800-128
A25X1000-128
A25X1200-128
A25X1500-128
A25X1500-128TA
A25X1600-128
OUTLINE AMPERE
FIG.
RATING
4
3
3
3
4
3
3
3
4
3
3
5
3
4
5
5
5
6
7
6
2000
2000
2500
2500
3000
3500
3500
4000
4500
CATALOG
NUMBER
A25X2000-128
A25X2000-128TA
A25X2500-128
A25X2500-128TA
A25X3000-128
A25X3500-128
A25X3500-128TA
A25X4000-128
A25X4500-128
OUTLINE
FIG.
6
7
6
7
6
6
7
6
6
Standard Fuse Ampere Ratings, Catalog Numbers
D
For ampere ratings and styles not listed, call Technical Services.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Dimensions
OUTLINE
REF.
A25X1 to 30
A25X35 to 60
A25X70 to 200
A25X225 to 700
A25X800
A25X700 to 1200
A25X1500 to 2500
A25X3000 to 4500
MOUNTING
TYPE
1
4
4
4, 4TA*
4, 4TA*
128
128, 128TA*
128, 128TA*
FIG.
A
1
2
3
3, 4*
3, 4*
5
6, 7*
6, 7*
2.00
(50.8)
3.19
(81.0)
3.13
(79.5)
3.84
(97.5)
3.84
(97.5)
2.59
(65.8)
2.59
(65.8)
2.59
(65.8)
B
0.56
(14.2)
0.81
(20.6)
1.22
(31.0)
1.50
(38.1)
2.00
(50.8)
3.00
(76.2)
3.50
(88.9)
4.50
(114)
DIMENSIONS - INCHES (mm)
C
D
E
F
-
-
1.63
(41.4)
1.63
(41.4)
1.59
(40.1)
1.59
(40.4)
2.34
(59.4)
2.34
(59.4)
2.34
(59.4)
-
-
2.50
(63.5)
2.44
(62.0)
2.91
(73.9)
2.91
(73.9)
2.50
(63.5)
3.00
(76.2)
3.75
(95.3)
-
-
2.25
(57.5)
2.31
(58.7)
2.28
(57.9)
2.28
(57.9)
1.50
(38.1)
1.50
(38.1)
1.50
(38.1)
-
-
0.34
(8.6)
0.31
(7.9)
0.41
(10.4)
0.41
(10.4)
-
-
1.50
(38.1)
1.50
(38.1)
TAP
G
-
-
0.72
(18.3)
1.00
(2.54)
1.00
(25.4)
1.50
(38.1)
-
-
-
-
-
-
H
-
-
0.13
(3.3)
0.19
(4.8)
0.25
(6.4)
0.25
(6.4)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3/8-24-1/2 Deep
-
3//8-24-1/2 Deep
-
1/2-20-1/2 Deep
-
* Optional Trigger Actuator (TA)
D7
A25X
AMP-TRAP
®
–Form 101
Melting Time – Current Data , 250V Fuses
Melting Time – Current Data, 250V Fuses
A25X70 to 4500
A25X1 to 60
SEMICONDUCTOR PROTECTION FUSES
Time in Seconds
Time in Seconds
D8
Current in Amperes
Current in Amperes
AMP-TRAP
®
–Form 101
A25X
Maximum Instantaneous Peak Let-Thru Amperes
SEMICONDUCTOR PROTECTION FUSES
Peak Let-Thru Current Data – A25X1 to 60, 250Volts AC
D
Available Current in RMS Symmetrical Amperes
Peak Let-Thru Current Data – A25X70 to 4000, 250 Volts AC
Maximum Instantaneous Peak Let-Thru Amperes
Available Current in RMS Symmetrical Amperes
D9
AMP-TRAP
®
–Form 101
A25X
250 VAC
Fault
SEMICONDUCTOR PROTECTION FUSES
I
2
t Data – 250 Volts AC
Load
Fig. A
FUSE
AMPERE
RATING
MELTING
(A
2
s)
I
2
t DATA
CLEARING AT 250V
1 FUSE
2 FUSES IN
(FIG. A) SERIES (FIG. B)
(A
2
s)
(A
2
s)
.27
1.5
3.8
6.9
8.7
9.6
13
24
31
39
54
60
110
170
240
540
690
960
1,400
3,500
4,600
5,800
7,200
11,000
16,000
22,000
29,000
36,000
45,000
65,000
88,000
110,000
140,000
180,000
260,000
350,000
460,000
720,000
1,000,000
1,600,000
1,800,000
2,900,000
4,500,000
.18
.98
2.5
4.6
5.8
6.4
8.4
16
21
26
36
40
72
110
160
380
460
640
960
2,100
2,300
2,500
3,000
4,100
6,000
8,000
11,000
13,000
16,000
24,000
32,000
42,000
53,000
66,000
95,000
130,000
170,000
260,000
380,000
600,000
680,000
1,100,000
1,600,000
250 VAC
Fault
Load
Fig. B
Watts Loss at Rated Current
AMPERE
RATING
70
80
90
100
125
150
175
200
225
WATTS
LOSS (w)
4.4
5.1
5.5
6.5
7.6
9.3
11
13
15
AMPERE
RATING
250
300
350
400
450
500
600
700
800
WATTS
LOSS (w)
19
22
26
30
32
37
45
55
51
AMPERE WATTS
RATING LOSS (w)
1000
1200
1500
2000
2500
3000
3500
4000
4500
5000
57
70
88
122
142
164
191
198
211
228
Watts Loss Correction vs. Percent Rated Current
Correction Factor for Watts Loss
1
2
3
4
5
6
7
8
9
10
12
15
20
25
30
35
40
50
60
70
80
90
100
125
150
175
200
225
250
300
350
400
450
500
600
700
800
1,000
1,200
1,500
1,600
2,000
2,500
.033
.17
.32
.85
1.3
1.9
2.7
5.0
8.6
13
18
20
36
56
81
95
120
190
280
420
550
700
860
1,300
2,000
2,600
3,400
4,300
5,400
7,700
11,000
14,000
18,000
22,000
31,000
42,000
55,000
86,000
125,000
200,000
220,000
350,000
550,000
Percent Rated Current
D 10
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