A50QS
Semiconductor Protection Fuses
A50QS Amp-Trap
®
Form 101 fuses grew out of the need to improve the overall
performance of semiconductor fuses in response to new equipment requirements.
The A50QS encompasses the best protection features – lower I
2
t to provide better
protection for equipment, longer life when subjected to cyclic loading and lower
watts loss. A50QS is today’s best choice for the protection of dynamic solid state
equipment such as motor drives, inverters, UPS, etc.
Features/Benefits:
•
Lowest I
2
t for greatest protection of semiconductor circuits
•
Low watts loss for cooler operation
•
Superior cycling ability gives an equipment design advantage
•
State-of-the-art protection for 500V equipment
•
Ultra compact sizes allow down-sizing of existing equipment
Highlights:
•
500V AC/DC rated
•
Lowest I
2
t
•
Low watts loss
•
Superior cycling ability
Applications:
•
Protection of 500V or less motor
drives, UPS, inverters, etc.
Ratings:
Volts
Amps
: 500VAC / DC
: 35 to 60A (AC)
: 70 to 1200A (AC)
: 35 to 1200A (DC)
I.R.
: 200kA I.R. AC
: 87kA I.R. DC
Catalog Numbering System
A
50 QS
250 - 4
Amp-Trap
®
Fuse
Rated Volts - 500
Style
Amperes*
Mounting Types*
Blades, bolt-in
A
50
QS
250
4
Approvals:
•
UL recognized component
UL File 60314
•
AC: UL guide no. JFHR2
•
DC Tested to UL standard
198L parameters
(70-1200A)
•
CSA Certified LR12636
* For ampere ratings and styles not listed, call Technical Services at
978-465-4853.
Single Pole Fuse Blocks
for A50QS Fuses
Fuse
Ampere
Rating
35-200
225-600
700-800
900-1200
*(not UL)
Mounting
Type
4
4
4
4
Catalog No.
P243E
P266C
1SC375
FH5OF5*
D6
A50QS
Semiconductor Protection Fuses
Catalog Numbers (amps)
A50QS35-4
A50QS40-4
A50QS50-4
A50QS60-4
A50QS70-4
A50QS80-4
A50QS90-4
A50QS100-4
A50QS125-4
A50QS150-4
A50QS175-4
A50QS200-4
A50QS225-4
* For ampere ratings and styles not listed, call
Technical Services at 978-465-4853.
A50QS250-4
A50QS300-4
A50QS350-4
A50QS400-4
A50QS450-4
A50QS500-4
A50QS600-4
A50QS700-4
A50QS900-4
A50QS1000-4
A50QS1200-4
A50QS800-4
Dimensions
Catalog Number
A50QS35 to 100
A50QS125 to 200
A50QS225 to 400
A50QS450 to 600
A50QS700 to 800
A50QS900 to 1200
Mounting
Type
4
4
4
4
4
4
A
3.63
(92.2)
3.63
(92.2)
4.34
(110)
4.47
(114)
6.47
(164.3)
6.97
(177.0)
B
1.00
(25.4)
1.22
(31.0)
1.50
(38.1)
2.00
(50.8)
2.38
(60.3)
2.88
(76.2)
C
2.13
(54.1)
2.13
(54.1)
2.09
(53.1)
2.22
(56.4)
2.22
(56.4)
3.22
(81.8)
Dimensions - Inches (mm)
D
2.94
(74.7)
2.94
(74.7)
3.41
(86.6)
3.53
(89.7)
5.00
(127.0)
5.47
(138.9)
E
2.75
(69.9)
2.81
(71.4)
2.78
(70.6)
2.91
(73.9)
3.44
(87.3)
4.47
(113.5)
F
0.31
(7.9)
0.31
(7.9)
0.41
(10.4)
0.41
(10.4)
.53
(13.5)
.63
(15.9)
G
0.75
(19.1)
1.00
(25.4)
1.00
(25.4)
1.50
(38.1)
2.00
(50.8)
2.38
(60.3)
H
0.13
(3.3)
0.19
(4.8)
0.25
(6.4)
0.25
(6.4)
.38
(9.8)
.44
(11.1)
For the most current product performance data visit
ep-us.mersen.com
and use catalog search.
D7
D
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