AMP-TRAP?–Form 101
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 I2t 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.
Ratings Approvals
(cid:1) AC:35-60A (cid:1) UL Recognized
500VAC, 200kA I.R. Component
70-1200A (cid:1) AC: UL Guide No. JFHR2
500VAC, 200kA I.R.
(cid:1) DC Tested to UL
(cid:1) DC:35-1200A
Standard 198L
500VDC, 100kA I.R.
parameters (70-1200A)
(cid:1) CSA Certified
LR12636
Features/Benefits
(cid:1)
Lowest l2tfor greatest protection of semiconductor
circuits
(cid:1)
Low watts lossfor cooler operation
HIGHLIGHTS: APPLICATIONS: (cid:1)
Superior cycling abilitygives an equipment design
(cid:1) 500V AC/DC Rated (cid:1) Protection of 500V or advantage
(cid:1) Lowest l2t less motor drives, (cid:1) State-of-the-art protectionfor 500 volt equipment
(cid:1) Low Watts Loss UPS, inverters, etc. (cid:1)
Ultra compact sizesallow down-sizing of existing
(cid:1) Superior Cycling equipment
Ability
Catalog Numbering System
A 50 QS 250- 4
Amp-trap¤ Fuse A
Rated Volts - 500 50
Style QS
Single Pole Fuse Blocks for A50QS Fuses
FUSE FUSE BLOCK Amperes* 250
AMPERE MOUNTING CATALOG
RATING TYPE NUMBER Mounting Type*
Blades, bolt-in 4
1 - 30
35-200 4 P243E
225-600 4 P266C * For ampere ratings and types not listed, consult the factory.
D 12Standard Fuse Ampere Ratings, Catalog Numbers
AMPERE CATALOG AMPERE CATALOG
RATING NUMBER RATING NUMBER
35 A50QS35-4 250 A50QS250-4
40 A50QS40-4 300 A50QS300-4
50 A50QS50-4 350 A50QS350-4
60 A50QS60-4 400 A50QS400-4
70 A50QS70-4 450 A50QS450-4
80 A50QS80-4 500 A50QS500-4
90 A50QS90-4 600 A50QS600-4
100 A50QS100-4 700 A50QS700-4
125 A50QS125-4 800 A50QS800-4
150 A50QS150-4 900 A50QS900-4
175 A50QS175-4 1000 A50QS1000-4
200 A50QS200-4 1200 A50QS1200-4
225 A50QS225-4
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)
Percent Rated Current
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AMP-TRAP?–Form 101
A50QS
SEMICONDUCTOR PROTECTION FUSES
D
Watts Loss at Rated Current
Watts Loss vs. Percent Rated Current
AMPERE WATTS AMPERE WATTS
RATING LOSS(w) RATING LOSS(w)
35 6 250 41
40 7 300 49

FERRAZ A50QS是一種高效能的快速熔斷器產(chǎn)品系列，由巴西FERRAZ公司生產(chǎn)。該型號適用于工業(yè)和照明應(yīng)用場合，主要用于提供過載及短路保護。A50QS快速熔斷器以其獨特的設(shè)計和快速響應(yīng)能力而聞名，能夠在電流異常升高時迅速切斷電路，從而有效防止設(shè)備損壞及火災(zāi)風(fēng)險。其額定電流范圍廣泛，從幾安培到幾百安培不等，可以適應(yīng)不同功率等級的電器設(shè)備需求。這種熔斷器因其可靠性、響應(yīng)速度和長久的使用壽命而在電氣行業(yè)中得到了廣泛應(yīng)用與認(rèn)可。