Bussmann
®
Stud-Mounted Fuses
Dimensional Data
A
(± 0.031")
(± 0.79mm)
ACK
All other tolerances
(± 0.005) mm
(± 0.13) inches
D
B
E
G
F
Catalog Symbol:
ACK
Ampere Rating:
10 to 400 Amperes
Voltage Rating:
130 Volts DC or less
(10-100): 130 Vdc, (120-200): 72 Vdc,
(225-300): 48 Vdc
Agency Approvals:
U.L. Recognized (15-300A), Guide JFHR2, File E56412
Electrical Ratings (Catalog Symbol, Amperes and Voltage)
ACK-10
ACK-15
ACK-20
ACK-25
ACK-30
ACK-35
130V
130V
130V
130V
130V
130V
ACK-40
ACK-50
ACK-60
ACK-70
ACK-75
ACK-80
130V
130V
130V
130V
130V
130V
ACK-100
ACK-120
ACK-140
ACK-150
ACK-160
ACK-175
130V
72V
72V
72V
72V
72V
ACK-200
ACK-225
ACK-250
ACK-300
ACK-400
—
72V
80V
80V
80V
80V
—
C
Catalog
Symbol
ACK 10–30
ACK 35–60
ACK 70–100
ACK 120–200
ACK 225–400
Dimensions in Inches and (mm)
A
2.5∑
(63.5)
3.0∑
(76.20)
3.5∑
(88.90)
3.750∑
(95.25)
3.750∑
(95.25)
B
.375∑
(9.53)
C
.500∑
(12.70)
D
.250∑
(6.35)
.344∑
(8.74)
.312∑
(7.92)
.375∑
(9.52)
.312∑
(7.92)
E
.557∑
14.15)
.812∑
(20.63)
1.062∑
(26.98)
1.062∑
(26.98)
1.062∑
(1.062)
F
.588∑
(14.94)
.860∑
(21.84)
1.125∑
(28.58)
1.15∑
(29.21)
1.125∑
(28.58)
G
.031∑
(0.79)
.051∑
(1.30)
.050∑
(1.27)
.050∑
(1.27)
.050∑
(1.27)
.470∑
.685∑
(11.94) (17.40)
.547∑
.750∑
(13.89) (19.05)
.750∑
.750∑
(19.05) (19.05)
.610∑
.750∑
(15.49) (19.05)
Test Specifications
Fuse
ACK
*Approximately.
Load
200%
300%
500%
Opening Time
100 Seconds*
35 Seconds*
13 Seconds*
Note: 10-60 amp fuses use brass terminals and ferrules.
70-400 amp fuses use copper terminals and ferrules.
Time-Current Characteristics–Total Clear
100
150
200
250
300
10
15
20
30
35
50
70
AMPERE
RATING
General Information:
• These fuses avoid needless openings from starting currents or
surges.
• A fuse link which operates only on very high overloads or
short-circuits.
• Thermal cutout functions on low overloads – the thermal
cutout cannot operate quickly at any load, hence long time-
lag is obtained on high overloads of short duration.
• This long time-lag also makes it unnecessary to use extra
large size or over-size fuses.
Fuseblocks
100
10
TIME IN SECONDS
Catalog
Number
ACK 10-30
ACK 35-60
ACK 70-100
Block
Number
4228
3411
2322
Catalog
Number
ACK 120-200
ACK 225-400
Block
Number
3569
3578
1
CE logo denotes compliance with European Union Low Voltage Directive
(50-1000 Vac, 75-1500 Vdc). Refer to BIF document #8002 or contact
Bussmann Application Engineering at 314-527-1270 for more information.
The only controlled copy of this BIF document is the electronic read-only version located on the
Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This
bulletin is intended to clearly present comprehensive product data and provide technical infor-
mation that will help the end user with design applications. Bussmann reserves the right, without
notice, to change design or construction of any products and to discontinue or limit distribution
of any products. Bussmann also reserves the right to change or update, without notice, any
technical information contained in this bulletin. Once a product has been selected, it should be
tested by the user in all possible applications.
.1
.01
1,000
2,000
100
CURRENT IN AMPERES
10
4
12-17-98
SB98107
Rev. A
Form No. ACK
Page 1 of 1
BIF Doc #1040
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