➤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
Ratings
Features/Benefits
➤Low l2tminimizes 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
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
➤UL Recognized
Component
➤AC: UL Guide No.
JFHR2 (10-250A)
Approvals
APPLICATIONS:
➤Protection of 250 volt
heavy duty rectifiers
and similar heavy
power supplies
A25 X600 - 4 TI
Amp-trap®Fuse
Rated Volts - 250
Style
Amperes*
Mounting Types*
Ferrule
Blades, bolt-in
Hockey puck, bolt-in
Integral Blown-Fuse
Indicator
Trigger Indicator
Trigger Actuator
* For ampere ratings and types not listed, consult the factory.
Catalog Numbering System
A
25
X
600
1
4
128
TI
TA
FUSE FUSE BLOCK
AMPERE CATALOG
RATING NUMBER
1-30 20306
31-60 P243G
61-100 P243
101-200 P243
201-400 P243G
401-700 P243G
Single Pole Fuse Blocks for A25X Fuses
HIGHLIGHTS:
➤Fast Acting
➤Current Limiting
➤Low l2t
➤Indicator Options
Available
AMP-TRAP®–Form 101
A25X SEMICONDUCTOR PROTECTION FUSES
D 6
Standard Fuse Ampere Ratings, Catalog Numbers
For ampere ratings and styles not listed, call Technical Services.
AMP-TRAP®–Form 101
A25X SEMICONDUCTOR PROTECTION FUSES
Dimensions
OUTLINE MOUNTING FIG. DIMENSIONS - INCHES (mm) TAP
REF. TYPE A B C D E F G H
A25X1 to 30 1 1 2.00 0.56 - - - - - - -
(50.8) (14.2) - - - - - - -
A25X35 to 60 4 2 3.19 0.81 1.63 2.50 2.25 0.34 0.72 0.13 -
(81.0) (20.6) (41.4) (63.5) (57.5) (8.6) (18.3) (3.3) -
A25X70 to 200 4 3 3.13 1.22 1.63 2.44 2.31 0.31 1.00 0.19 -
(79.5) (31.0) (41.4) (62.0) (58.7) (7.9) (2.54) (4.8) -
A25X225 to 700 4, 4TA* 3, 4* 3.84 1.50 1.59 2.91 2.28 0.41 1.00 0.25 -
(97.5) (38.1) (40.1) (73.9) (57.9) (10.4) (25.4) (6.4) -
A25X800 4, 4TA* 3, 4* 3.84 2.00 1.59 2.91 2.28 0.41 1.50 0.25 -
(97.5) (50.8) (40.4) (73.9) (57.9) (10.4) (38.1) (6.4) -
A25X700 to 1200 128 5 2.59 3.00 2.34 2.50 1.50 - - - 3/8-24-1/2 Deep
(65.8) (76.2) (59.4) (63.5) (38.1) - - - -
A25X1500 to 2500 128, 128TA* 6, 7* 2.59 3.50 2.34 3.00 1.50 1.50 - - 3//8-24-1/2 Deep
(65.8) (88.9) (59.4) (76.2) (38.1) (38.1) - - -
A25X3000 to 4500 128, 128TA* 6, 7* 2.59 4.50 2.34 3.75 1.50 1.50 - - 1/2-20-1/2 Deep
(65.8) (114) (59.4) (95.3) (38.1) (38.1) - - -
* Optional Trigger Actuator (TA)
Figure 2 Figure 3
Figure 1
Figure 4 Figure 5 Figure 6 Figure 7
AMPERE CATALOG OUTLINE AMPERE CATALOG OUTLINE AMPERE CATALOG OUTLINE AMPERE CATALOG OUTLINE
RATING NUMBER FIG. RATING NUMBER FIG. RATING NUMBER FIG. RATING NUMBER FIG.
1
2
3
4
5
6
7
8
9
10
12
15
20
25
30
35
40
50
60
70
80
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
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
3
3
4
3
3
3
3
4
3
3
3
4
3
3
3
3
3
4
3
3
3
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
400
400
450
500
500
500
550
600
600
600
700
700
800
800
800
1000
1000
1200
1500
1500
1600
4
3
3
3
4
3
3
3
4
3
3
5
3
4
5
5
5
6
7
6
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
2000
2000
2500
2500
3000
3500
3500
4000
4500
6
7
6
7
6
6
7
6
6
A25X2000-128
A25X2000-128TA
A25X2500-128
A25X2500-128TA
A25X3000-128
A25X3500-128
A25X3500-128TA
A25X4000-128
A25X4500-128
D 7
D
Melting Time – Current Data , 250V Fuses
Time in Seconds
Current in Amperes
Time in Seconds
Current in Amperes
Melting Time – Current Data, 250V Fuses
A25X1 to 60
A25X70 to 4500
AMP-TRAP®–Form 101
A25X SEMICONDUCTOR PROTECTION FUSES
D 8
Peak Let-Thru Current Data – A25X1 to 60, 250Volts AC
Available Current in RMS Symmetrical Amperes
Maximum Instantaneous Peak Let-Thru Amperes
Peak Let-Thru Current Data – A25X70 to 4000, 250 Volts AC
Available Current in RMS Symmetrical Amperes
Maximum Instantaneous Peak Let-Thru Amperes
AMP-TRAP®–Form 101
A25X SEMICONDUCTOR PROTECTION FUSES
D 9
D
AMPERE WATTS AMPERE WATTS AMPERE WATTS
RATING LOSS (w) RATING LOSS (w) RATING LOSS (w)
70 4.4 250 19 1000 57
80 5.1 300 22 1200 70
90 5.5 350 26 1500 88
100 6.5 400 30 2000 122
125 7.6 450 32 2500 142
150 9.3 500 37 3000 164
175 11 600 45 3500 191
200 13 700 55 4000 198
225 15 800 51 4500 211
5000 228
Watts Loss at Rated Current
Percent Rated Current
Correction Factor for Watts Loss
Watts Loss Correction vs. Percent Rated Current
I2t Data – 250 Volts AC
I2t DATA
FUSE CLEARING AT 250V
AMPERE MELTING 1 FUSE 2 FUSES IN
RATING (FIG. A) SERIES (FIG. B)
(A2s) (A2s) (A2s)
1 .033 .27 .18
2 .17 1.5 .98
3 .32 3.8 2.5
4 .85 6.9 4.6
5 1.3 8.7 5.8
6 1.9 9.6 6.4
7 2.7 13 8.4
8 5.0 24 16
9 8.6 31 21
10 13 39 26
12 18 54 36
15 20 60 40
20 36 110 72
25 56 170 110
30 81 240 160
35 95 540 380
40 120 690 460
50 190 960 640
60 280 1,400 960
70 420 3,500 2,100
80 550 4,600 2,300
90 700 5,800 2,500
100 860 7,200 3,000
125 1,300 11,000 4,100
150 2,000 16,000 6,000
175 2,600 22,000 8,000
200 3,400 29,000 11,000
225 4,300 36,000 13,000
250 5,400 45,000 16,000
300 7,700 65,000 24,000
350 11,000 88,000 32,000
400 14,000 110,000 42,000
450 18,000 140,000 53,000
500 22,000 180,000 66,000
600 31,000 260,000 95,000
700 42,000 350,000 130,000
800 55,000 460,000 170,000
1,000 86,000 720,000 260,000
1,200 125,000 1,000,000 380,000
1,500 200,000 1,600,000 600,000
1,600 220,000 1,800,000 680,000
2,000 350,000 2,900,000 1,100,000
2,500 550,000 4,500,000 1,600,000
Load
250 VAC Fault
Fig. A
Load
250 VAC Fault
Fig. B
AMP-TRAP®–Form 101
A25X SEMICONDUCTOR PROTECTION FUSES
D 10