Semiconductor
(A)(AC)fuses
Semiconductor
fuses
American Round Fuses
Form 101 Range
A70QS
French Cylindrical
Semiconductor Protection Fuses
Features/Benefits
These Premium Amp-trap® French Cylindrical Semiconductor Fuses are
an extension of the popular A7OQS product line. They are solid-fill
14mm and 22mm fuses, IEC rated 690VAC, 200kA Interrupting and
700VDC, 100kA interrupting at 10ms time constant.
In addition, these fuses have an 890 VDC rating for capacitor
discharge applications up to 2.5ms time
constant. All ampere ratings are available with a striker. Applications
include small inverter drives and UPS systems, with superior l2t for
improved protection and performance.
• International 14x51mm (2"x9/16") and 22x58mm (2-1/4"x13/16") sizes for worldwide acceptance
• Ferrule mount up to 100A for design versatility
• Very low I2t for improved semiconductor protection
• 690V IEC rated, tested at 760VAC; can be used up to 750VAC in U.S.
• 700VDC rated for dc protection of equipment with L/R ≤10ms/c
• Superior cycling ability for longer life on difficult cyclic loading applications
• aR characteristic for semiconductor short- circuit protection
Ratings
Approvals
Highlights
Applications
• AC: 10-100A
690VAC, 200kA I.R.
• UL Recognized
Component
• IEC tested at 760VAC
• CSA Certified
• DC: 700VDC, 100kA I.R
L/R=10ms
890VDC, 127kA I.R.
L/R=2.5ms
• IEC 269-4 Compliance
• 14 x 51 and 22 x 58
• Small inverters,
sizes
UPS systems,
• 690VAC IEC Rated
motor drives and
(760VAC Max.)
similar 700V or
• 700VDC rated
less equipment
• Superior Cycling Ability
• Low Watts Loss
• Optional Striker
forVisual/Remote
Indication
Catalog Numbering System
A70 QS 20
Mounting:
• US14 or US22 “finger-safe” IP 20 grade holders,
DIN rail or screw mount, with striker actuated
microswitch indication available.
• 703 Series open fuse blocks
14F I
Amp-trap®
Fuse Family
Style/Design
Amperes*
Size: 14F = 14 x 51 mm
22F = 22 x 58 mm
Optional Striker I
SCAC24
12/04
Semiconductor
Semiconductor (AC) fuses (A) fuses
American Round Fuses
Form 101 Range
A70QS
French Cylindrical
Semiconductor Protection Fuses
Ratings and Application Data
Body
Size
(mm)
Ampere
Rating
(A)
Melting
I2t
(A2s X 103)
Max. Clearing
I2t @ 700VAC
(A2s X 103)
Watts Loss @
Rated Current
(W)
No Striker
With Striker
6
8
10
12
16
20
25
32
40
50
10
15
20
25
32
40
50
63
70
80
90
100
0.0013
0.0024
0.0043
0.0054
0.0132
0.027
0.053
0.098
0.13
0.28
0.0043
0.008
0.013
0.02
1.04
1.09
0.16
0.35
0.52
0.73
1.10
1.56
0.017
0.027
0.04
0.06
0.10
0.16
0.27
0.50
0.70
1.50
0.025
0.049
0.076
0.125
0.27
0.48
0.80
1.85
2.80
3.80
5.64
8.00
2.0
2.8
3.5
4.4
4.8
5.2
5.8
7.0
10.7
11.6
4.0
6.2
8.0
10.0
11.0
13.0
14.9
16.0
16.5
17.8
17.0
19.0
A70QS6-14F
A70QS8-14F
A70QS10-14F
A70QS12-14F
A70QS16-14F
A70QS20-14F
A70QS25-14F
A70QS32-14F
A70QS40-14F
A70QS50-14F
A70QS10-22F
A70QS15-22F
A70QS20-22F
A70QS25-22F
A70QS32-22F
A70QS40-22F
A70QS50-22F
A70QS63-22F
A70QS70-22F
A70QS80-22F
A70QS90-22F
A70QS100-22F
A70QS6-14FI
A70QS18-14FI
A70QS10-14FI
A70QS12-14FI
A70QS16-14FI
A70QS20-14FI
A70QS25-14FI
A70QS32-14FI
A70QS40-14FI
A70QS50-14FI
A70QS10-22FI
A70QS15-22FI
A70QS20-22FI
A70QS25-22FI
A70QS32-22FI
A70QS40-22FI
A70QS50-22FI
A70QS63-22FI
A70QS70-22FI
A70QS80-22FI
A70QS90-22FI
A70QS100-22FI
14 x 51
22 x 58
Catalog Number
*100kA, L/R = 11.6ms
No Striker
With Striker
Dimensions-mm
Fuse Size
14 X 51
22 X 58
Dimensions-mm
A
B
C
14
22
51
58
14
16
Fuse Size
14 X 51
22 X 58
A
B
C
D
E
14
22
51
58
14
16
7.5
7.5
3.8
3.8
D
A
A
C
C
B
12/04
E
B
SCAC25
Semiconductor
(A)(AC)fuses
Semiconductor
fuses
American Round Fuses
Form 101 Range
A70QS
French Cylindrical
Semiconductor Protection Fuses
Melting Time-Current Data
A70QS6 TO 50 (14F, 14FI)
A70QS50 TO 60 (14FI)
a = 130 B1 = 1,25
A2 = 0,6 B2 = 0,6
Cf3 = 0,8
A70QS25 TO 100 (22F, 22FI)
a = 130
A2 = 0,6
a = 130 B1 = 1,25
A2 = 0,6 B2 = 0,6
Cf3 = 0,8
B1 = 1,25
B2 = 0,6
Cf3 = 0,8
These curves indicate, for each rated current, the pre-arcing (melting) time vs. the R.M.S. current.
Clearing I2t vs. Operating Voltage
Peak arc voltage vs. Operating Voltage
A70QS6 TO 60 (14F, 14FI)
MAX PEAK ARC VOLTAGE
CORRECTION FACTOR FOR I2T
A70QS6 TO 60 (14F, 14FI)
OPERATING VOLTAGE
OPERATING VOLTAGE
A70QS25 TO 100 (22F, 22FI)
MAX PEAK ARC VOLTAGE
CORRECTION FACTOR FOR I2T
A70QS25 TO 100 (22F, 22FI)
OPERATING VOLTAGE
OPERATING VOLTAGE
SCAC26
12/04
Semiconductor
Semiconductor (AC) fuses (A) fuses
American Round Fuses
Form 101 Range
A70QS
French Cylindrical
Semiconductor Protection Fuses
Peak Arc voltage vs. DC circuit voltage
A70QS6 TO 60 (14F, 14FI)
A70QS6 TO 60 (14F, 14FI)
TIME CONSTANT L/R
PEAK ARC VOLTAGE
D.C. Applications Data
DC Voltage Capabilities vs. Time Constant
DC CIRCUIT VOLTAGE
DC VOLTAGE CAPABILITY
SEE MELTING-TIME CURRENT DATA FOR MINIMUM
BREAKING CURRENT.
DC Voltage Capabilities vs. Time Constant
Peak Arc voltage vs. DC circuit voltage
A70QS25 TO 100 (22F, 22FI)
A70QS25 TO 100 (22F, 22FI)
L (ms)
R
PEAK ARC VOLTAGE
TIME CONSTANT L/R
80
70
60
50
40
30
20
10
0
100
200 300 400 500 600
U(V)
DC VOLTAGE CAPABILITY
These curves provide the DC voltage capability of
the fuse as a function of circuit time constant.
DC CIRCUIT VOLTAGE
These curves show the peak value Um of the arc voltage
which appears across the fuse link as a function of the operating voltage U.
(L/R ratio)
12/04
SCAC27
Semiconductor
(A)(AC)fuses
Semiconductor
fuses
American Round Fuses
Form 101 Range
A70QS
Semiconductor Protection Fuses
A70QS Amp-trap® Semiconductor Protection fuses were
developed in response to the need for improved overall
performance of 700 volt semiconductor fuses for new
equipment requirements. A70QS fuses have lower I2t for
better protection, longer life when subjected to cyclic
loading, plus lower watts loss. A70QS is the best choice
to protect dynamic solid state equipment
such as motor drives, UPS, etc.
Features/Benefits
2
• Very Low l t for improved protection of equipment
• Superior cycling ability for long,reliable life
on high cyclic loading
• Low watts loss for cooler operation
• 700V AC/DC rating gives greater design versatility
• Ultra compact sizes allow down-sizing
of existing equipment
Ratings
Approvals
Highlights
Applications
• AC: 35-800A
700VAC, 200kA I.R.
• UL Recognized
Component AC/DC
• DC: 35-800A
700VDC, 100kA I.R.
L/R = 10ms
• AC: GuideNo.JFHR2
•
•
•
•
• Protection of 700V
less motor drives,
UPS, inverters, etc.
• DC: Tested to UL
Standard 198L
Parameters (35-800A)
• CSA Certified
File LR 12636
700V AC/DC Rated
Very low l2t
Low Watts Loss
Superior Cycling
Ability
Catalog Numbering System
A
Single Pole Fuse Blocks
for A70QS Fuses
Amp-trap® Fuse
Fuse
Ampere
Rating
Catalog
Number
Fuse block
Reference
Number
35-200
225-600
700-800
P243C
P266A
15C 375
M219040
Y212380
SCAC28
70
QS 150 - 4
A
Rated Volts - 700
70
Style
QS
Amperes*
150
Mounting Types*
Blades, bolt-in.
4,4K
* for ampere ratings and types not listed, consult the factory.
12/04
Semiconductor
Semiconductor (AC) fuses (A) fuses
American Round Fuses
Form 101 Range
A70QS
Semiconductor Protection Fuses
Standard Fuse Ampere Ratings, Catalog and ReferenceNumbers
Ampere
Rating
Catalog
Number
Ref.
Ampere
Number Rating
35
40
50
60
70
80
90
A7OQS35-4
A7OQS40-4
A7OQS50-4
A7OQS60-4
A7OQS70-4
A7OQS80-4
A7OQS90-4
D202748
Y213829
T217919
H219473
B201527
X212816
K214346
100
125
125
150
150
175
175
Catalog
Number
A7OQS100-4
A7OQS125-4
A7OQS125-4K
A7OQS150-4
A7OQS150-4K
A7OQS175-4
A7OQS175-4K
Ref.
Ampere
Number Rating
G214343
L215865
Q216375
P218950
F219471
A223192
J200982
200
200
250
300
350
400
450
Catalog
Number
A7OQS200-4
A7OQS200-4K
A7OQS250-4
A7OQS300-4
A7OQS350-4
A7OQS400-4
A7OQS450-4
Ref.
Ampere
Number Rating
V212814
E213329
L217406
Q218951
M211266
J214345
F214848
450
500
500
600
600
700
800
Catalog
Number
Ref.
Number
A7OQS450-4K
A7OQS500-4
A70QS500-4K
A7OQS600-4
A7OQS600-4K
A7OQS700-4
A7OQS800-4
H215356
A218431
R218952
Y219993
P222676
E202772
Z213830
For ampere ratings and styles not listed, ask sales agent. Mounting Type 4; note exception 4k
Dimensions
Catalog
Number
Mounting
Type
A70QS35 to 100
4
A70QS125 to 200
4
A70QS125 to 200
4K
A70QS225 to 400
4
A70QS450 to 600
4
A70QS450 to 600
4K
A70QS700 to 800
4
Dimensions - Inches (mm)
A
4.38
(111)
4.38
(111)
5.09
(129)
5.09
(129)
5.09
(129)
7.09
(180)
7.09
(180)
B
1.00
(25.4)
1.22
(31.0)
1.22
(31.0)
1.50
(38.1)
2.00
(50.8)
2.00
(50.8)
2.50
(63.5)
C
2.88
(73.0)
2.88
(73.0)
2.88
(73.0)
2.84
(72.2)
2.84
(72.2)
2.84
(72.2)
2.84
(72.2)
D
3.69
(93.6)
3.69
(93.6)
4.19
(106)
4.16
(106)
4.16
(106)
6.16
(156)
5.28
(134)
I2t Data – 700 Volts
AC, 100kA
Melting
3
35
40
50
60
70
80
90
100
125
150
175
200
225
250
300
350
400
450
500
600
700
800
12/04
2
x 10 A s
0.13
0.16
0.24
0.32
0.50
0.65
0.83
1.0
2.1
3.3
4.2
5.9
9.0
12.6
16.7
21.5
29.7
36.7
47.1
65.2
103.6
135.3
I2t data
clearing at 700V AC
1 Fuse
2 Fuses
(Fig. A)
in series(Fig. B)
x 103A2s
x 103A2s
0.47
0.27
0.58
0.33
0.86
0.49
1.2
0.69
1.8
1.0
2.3
1.3
3.0
1.7
3.6
2.1
6.9
4.0
11
6.3
14
8.0
19
11
30
17
42
24
55
32
72
41
99
57
125
72
160
92
222
127
332
190
433
248
F
0.31
(7.9)
0.31
(7.9)
0.41
(10.3)
0.40
(10.3)
0.41
(10.3)
0.53
(13.5)
0.53
(13.5)
G
0.75
(19.0)
1.00
(25.4)
1.00
(25.4)
1.50
(38.1)
1.50
(38.1)
1.50
(38.1)
2.00
(50.8)
Fault
700 VAC
Fig. A
H
0.13
(3.2)
0.19
(4.8)
0.19
(4.8)
0.25
(6.4)
0.25
(6.4)
0.25
(6.4)
0.38
(9.5)
Load
Fault
700 VAC
Load
Fig. B
Clearing I2t vs. AC Operating Voltage
CORRECTION FACTOR FOR I2T
Fuse
Ampere
Rating
E
3.50
(88.9)
3.56
(90.5)
3.50
(88.0)
3.53
(89.7)
3.53
(89.7)
3.53
(89.7)
4.91
(125)
OPERATING VOLTAGE (AC RMS VOLTS)
SCAC29
Semiconductor
(A)(AC)fuses
Semiconductor
fuses
American Round Fuses
Form 101 Range
A70QS
Semiconductor Protection Fuses
TIME IN SECONDS
A70QS35 to 800
Melting Time – Current Data, 700V Fuses
CURRENT IN AMPERES
MAXIMUM INSTANTANEOUS PEAK LET-THRU AMPERES
Peak Let-Thru Current Data – A70QS35 to 800, 700 Volts AC
AVAILABLE CURRENT IN RMS SYMMETRICAL AMPERES
SCAC30
12/04
Semiconductor
Semiconductor (AC) fuses (A) fuses
American Round Fuses
Form 101 Range
A70QS
Semiconductor Protection Fuses
Ampere
Rating
Clearing I2t
(A2s x 103)
35
40
50
70
80
90
100
125
150
175
200
225
250
300
350
400
450
500
600
700
800
0.25
0.35
0.60
1.3
1.8
2.4
3.1
5.3
8.1
12
16
21.5
27.5
42
63
85
115
150
201
325
450
Maximum Arc Volts vs. System Voltage
MAXIMUM PEAK ARC VOLTS
Clearing I2t at 700V DC,
100kA, L/R = 10 ms
CIRCUIT VOLTAGE (VOLTS RMS)
Watts Loss at Rated Current
DC Voltage Capability vs. Time Constant
Watts
Loss (W)
Ampere
Rating
Watts
Loss (W)
35
40
50
60
70
80
90
100
125
150
175
6.2
7.5
9.8
12
15
18
20
24
22
29
35
200
225
250
300
350
400
450
500
600
700
800
41
37
42
53
64
75
78
92
116
125
143
DC VOLTAGE CAPABILITY
CORRECTION FACTOR FOR WATTS LOSS
Watts Loss vs. % Rated Current
L/R TIME CONSTANT (MS)
12/04
Ampere
Rating
PERCENT RATED CURRENT
SCAC31