12/04
Semiconductor (A) fuses
Semiconductor (AC) fuses
SCAC46
American Round Fuses
Other American Fuses
A70QS
French Cylindrical
Semiconductor Protection Fuses
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.
• AC: 10-100A
690VAC, 200kA I.R.
• IEC tested at 760VAC
• DC: 700VDC, 100kA I.R
L/R=10ms
890VDC, 127kA I.R.
L/R=2.5ms
Ratings
Features/Benefits
• 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
• UL Recognized
Component
• CSA Certified
• IEC 269-4 Compliance
Approvals Highlights
• 14 x 51 and 22 x 58
sizes
• 690VAC IEC Rated
(760VAC Max.)
• 700VDC rated
• Superior Cycling Ability
• Low Watts Loss
• Optional Striker
forVisual/Remote
Indication
Applications
• Small inverters,
UPS systems,
motor drives and
similar 700V or
less equipment
A70 QS 20 14F I
Amp-trap®
Fuse Family
Style/Design
Amperes*
Size: 14F = 14 x 51 mm
22F = 22 x 58 mm
Optional Striker I
Catalog Numbering System
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
12/04
American Round Fuses
Other American Fuses
A70QS
SCAC47
Semiconductor (A) fuses
Semiconductor (AC) fuses
French Cylindrical
Semiconductor Protection Fuses
Ratings and Application Data
Dimensions-mm
Fuse Size ABC
No Striker With Striker
*100kA, L/R = 11.6ms
Body Ampere Melting Max. Clearing Watts Loss @ Catalog Number
Size Rating I2tI
2t @ 700VAC Rated Current
(mm) (A) (A2s X 103)(A
2s X 103) (W) No Striker With Striker
14 X 51 14 51 14
22 X 58 22 58 16
Dimensions-mm
Fuse Size AB CD E
14 X 51 14 51 14 7.5 3.8
22 X 58 22 58 16 7.5 3.8
6 0.0013 0.017 2.0 A70QS6-14F A70QS6-14FI
8 0.0024 0.027 2.8 A70QS8-14F A70QS18-14FI
10 0.0043 0.04 3.5 A70QS10-14F A70QS10-14FI
12 0.0054 0.06 4.4 A70QS12-14F A70QS12-14FI
14 x 51 16 0.0132 0.10 4.8 A70QS16-14F A70QS16-14FI
20 0.027 0.16 5.2 A70QS20-14F A70QS20-14FI
25 0.053 0.27 5.8 A70QS25-14F A70QS25-14FI
32 0.098 0.50 7.0 A70QS32-14F A70QS32-14FI
40 0.13 0.70 10.7 A70QS40-14F A70QS40-14FI
50 0.28 1.50 11.6 A70QS50-14F A70QS50-14FI
10 0.0043 0.025 4.0 A70QS10-22F A70QS10-22FI
15 0.008 0.049 6.2 A70QS15-22F A70QS15-22FI
20 0.013 0.076 8.0 A70QS20-22F A70QS20-22FI
25 0.02 0.125 10.0 A70QS25-22F A70QS25-22FI
32 1.04 0.27 11.0 A70QS32-22F A70QS32-22FI
40 1.09 0.48 13.0 A70QS40-22F A70QS40-22FI
22 x 58 50 0.16 0.80 14.9 A70QS50-22F A70QS50-22FI
63 0.35 1.85 16.0 A70QS63-22F A70QS63-22FI
70 0.52 2.80 16.5 A70QS70-22F A70QS70-22FI
80 0.73 3.80 17.8 A70QS80-22F A70QS80-22FI
90 1.10 5.64 17.0 A70QS90-22F A70QS90-22FI
100 1.56 8.00 19.0 A70QS100-22F A70QS100-22FI
A
C
B
A
C
B
D
E
12/04
Semiconductor (A) fuses
Semiconductor (AC) fuses
SCAC48
American Round Fuses
Other American Fuses
A70QS
French Cylindrical
Semiconductor Protection Fuses
These curves indicate, for each rated current, the pre-arcing (melting) time vs. the R.M.S. current.
A70QS6 TO 60 (14F, 14FI)
A70QS6 TO 50 (14F, 14FI) A70QS50 TO 60 (14FI) A70QS25 TO 100 (22F, 22FI)
a= 130 B1 = 1,25
A2 = 0,6 B2 = 0,6
Cf3 = 0,8
a= 130 B1 = 1,25
A2 = 0,6 B2 = 0,6
Cf3 = 0,8
A70QS25 TO 100 (22F, 22FI)
A70QS25 TO 100 (22F, 22FI)
Melting Time-Current Data
a= 130 B1 = 1,25
A2 = 0,6 B2 = 0,6
Cf3 = 0,8
Clearing I2t vs. Operating Voltage
Peak arc voltage vs. Operating Voltage
CORRECTION FACTOR FOR I2T
MAX PEAK ARC VOLTAGE
OPERATING VOLTAGE OPERATING VOLTAGE
A70QS6 TO 60 (14F, 14FI)
MAX PEAK ARC VOLTAGE
CORRECTION FACTOR FOR I2T
OPERATING VOLTAGE
OPERATING VOLTAGE
12/04
American Round Fuses
Other American Fuses
A70QS
SCAC49
Semiconductor (A) fuses
Semiconductor (AC) fuses
French Cylindrical
Semiconductor Protection Fuses
D.C. Applications Data
SEE MELTING-TIME CURRENT DATA FOR MINIMUM
BREAKING CURRENT.
These curves provide the DC voltage capability of
the fuse as a function of circuit time constant.
(L/R ratio)
These curves show the peak value Um of the arc voltage
which appears across the fuse link as a function of the ope-
rating voltage U.
A70QS6 TO 60 (14F, 14FI) A70QS6 TO 60 (14F, 14FI)
A70QS25 TO 100 (22F, 22FI)
A70QS25 TO 100 (22F, 22FI)
DC Voltage Capabilities vs. Time Constant
Peak Arc voltage vs. DC circuit voltage
DC Voltage Capabilities vs. Time Constant
Peak Arc voltage vs. DC circuit voltage
TIME CONSTANT L/R
DC VOLTAGE CAPABILITY
TIME CONSTANT L/R
DC CIRCUIT VOLTAGE
PEAK ARC VOLTAGE
DC VOLTAGE CAPABILITY
DC CIRCUIT VOLTAGE
PEAK ARC VOLTAGE
