Page 13 - Ferraz semiconductor UL

Semiconductor (A) fuses
Semiconductor (AC) fuses

American Round Fuses

Form 101 Range
A50QS

Semiconductor Protection Fuses

Standard Fuse Ampere Ratings, Catalog Numbers

Ampere Catalog Reference Ampere Catalog Reference
Rating Number Number Rating Number Number
35 A50QS35-4 Q214834 250 A50QS250-4 W211251
40 A50QS40-4 Y215853 300 A50QS300-4 D212799
50 A50QS50-4 W217392 350 A50QS350-4 T215343
60 A50QS60-4 A218937 400 A50QS400-4 B216362
70 A50QS70-4 B222664 450 A50QS450-4 E216871
80 A50QS80-4 L201513 500 A50QS500-4 L218418
90 A50QS90-4 X211252 600 A50QS600-4 Q219457
100 A50QS100-4 A216361 700 A50QS700-4 N223181
125 A50QS125-4 K218417 800 A50QS800-4 C202287
150 A50QS150-4 P219456 900 A50QS900-4 R212282
175 A50QS175-4 A222663 1000 A50QS1000-4 V217391
200 A50QS200-4 T200968 1200 A50QS1200-4 C217904
225 A50QS225-4 K201512
For ampere ratings and styles not listed, call Technical Services.
Dimensions

Catalog Mounting Dimensions - Inches (mm)
Number Type A B C D E F G H
A50QS35 to 100 4 3.63 1.00 2.13 2.94 2.75 0.31 0.75 0.13
(92.2) (25.4) (54.1) (74.7) (69.9) (7.9) (19.1) (3.3)
A50QS125 to 200 4 3.63 1.22 2.13 2.94 2.81 0.31 1.00 0.19
(92.2) (31.0) (54.1) (74.7) (71.4) (7.9) (25.4) (4.8)
A50QS225 to 400 4 4.34 1.50 2.09 3.41 2.78 0.41 1.00 0.25
(110) (38.1) (53.1) (86.6) (70.6) (10.4) (25.4) (6.4)
A50QS450 to 600 4 4.47 2.00 2.22 3.53 2.91 0.41 1.50 0.25
(114) (50.8) (56.4) (89.7) (73.9) (10.4) (38.1) (6.4)
A50QS700 to 800 4 6.47 2.50 2.22 5.00 3.44 .53 1.50 .25
(164.3) (63.5) (56.4) (127.0) (87.3) (13.5) (38.1) (6.4)
A50QS900 to 1200 4 6.97 3.00 3.22 5.47 4.47 .63 2.38 .44
(177.0) (76.2) (81.8) (138.9) (113.5) (15.9) (60.3) (11.1)

Watts Loss vs. Percent Rated Current Watts Loss at Rated Current

Ampere Loss (W) Ampere Loss (W)
Watts
Watts
CORRECTION FACTOR FOR WATTS LOSS 100 10 350 110
Rating
Rating
6
35
41
250
40
7
300
49
57
8
50
400
65
60
69
12
70
450
77
500
14
80
15
92
600
90
700
17
125
800
130
21
900
150
29
175
160
1200
175
33
200
225 25 1000 140
37
Correction factor example:
At 80% rated current, watts loss equals .
PERCENT RATED CURRENT 54 times watts loss at rated current.
SCAC13
12/04