Motor Starting and other intermittent AC applications
Proudly Made In U.S.A.
The MS motor start aluminum electrolytic capacitor is used to provide the torque necessary to start AC motors and can be used in other intermittent
AC applications. The capacitor comes in all popular styles with a variety of terminal configuration choices. Mallory Motor Start Capacitors are
designed in accordance with EIA-463-B. The metal case units are covered with a plastic sleeve (PVC) to provide electrical insulation.
4411 South High School Road
Indianapolis,IN 46241
Phone: (317) 612-1000
(800) 625-4369
Fax: (317) 612-1010
Mal
lo
AC
Capacito
ry
LC
rL
®
IS
O9
0
002
A124
MALLORY AC CAPACITOR LLC
www.mallory-ac.com
Type MS
Case
Code
D
( 0.015)
Standard Terminal Layouts & Resistor Layout
Inches
L
(+0.020, -0.030)
C
(Ref.)
1
/
2
1
/
2
1
/
2
5
/
8
5
/
8
7
/
8
7
/
8
7
/
8
Millimeters
D
( 0.38)
L
(+0.51, -0.76)
C
(Ref.)
1
2
3
4
5
6
7
8
1-
7
/
16
1-
7
/
16
1-
7
/
16
1-
13
/
16
1-
13
/
16
2-
1
/
16
2-
1
/
16
2-
9
/
16
(1.4375)
(1.4375)
(1.4375)
(1.8125)
(1.8125)
(2.0625)
(2.0625)
(2.5625)
2-
3
/
4
3-
3
/
8
4-
3
/
8
3-
3
/
8
4-
3
/
8
3-
3
/
8
4-
3
/
8
4-
3
/
8
(2.750)
(3.375)
(4.375)
(3.375)
(4.375)
(3.375)
(4.375)
(4.375)
(.500)
(.500)
(.500)
(.625)
(.625)
(.875)
(.875)
(.875)
36.51
36.51
36.51
46.04
46.04
52.39
52.39
65.09
69.85
85.73
111.13
85.73
111.13
85.73
111.13
111.13
12.70
12.70
12.70
15.88
15.88
22.23
22.23
22.23
Solder Lug Terminals
(SL)
(All Cases)
.125
(Ref)
C
Single Disconnect Terminals
(SQC)
(All Cases)
C
Standard
Dual Disconnect Terminals
(DQC)
(All Cases)
C
Dual Disconnect Terminals
W/Solder Lug Terminal
(DQCS)
(Case 4, 5, 6, 7 & 8 only)
C
L
.0625
(Ref)
.0625
(Ref)
.0625
(Ref)
D
Mounting Accessories
HB Brackets
EIA
Case Code
Dimensions (Ref.)
PL and PLA End Caps
Catalog Number
A
3-
3
/
8
"
4-
1
/
64
"
5-
1
/
64
"
B
1-
11
/
64
"
1-
13
/
16
"
2-
23
/
32
"
C*
7
/ "
8
1
/ "
1-
2
1-
25
/
32
"
D
1.258
1-
37
/
64
"
2-
5
/
64
"
Wire Hole
Toward Bracket
Wire Hole
Away From Bracket
EIA
Case Code
A
Dimension
HB2
HB4
HB8
1
2-4-6
3-5-7-8
PL3
PL6
PL8
PL10
PLA3
PLA6
PLA8
PLA10
1-2-3
4-5
6-7
8
1-
7
/
16
"
1-
13
/
16
"
2-
1
/
16
"
2-
9
/
16
"
Material: .042 spring steel
with black parkerized finish.
.3125 R
.2188 R
* Center-to-center dimension.
.375
PL
A
.9375 Space
D
.191 R
.750
1.375
*C
.094
.375
PLA
B
A
.230
.234
A
.875
1.1875
HB brackets are used with PL or PLA end caps. The bracket is assembled to the motor or any suitable surface by two screws in line at any convenient position within
the center-to-center dimension (C) shown in the chart. The PL end cap is placed in position and the entire assemby snapped into place with the connecting wires
brought through the bracket hole. Use PLA style caps if the wire is to be direced away from the bracket. (Example: PLA3).
End caps and brackets are shipped loose and should be ordered separately.
Contact the factory for information about wire leads and sub-assemblies.
2
Mallory AC Capacitor LLC - 4411 South High School Road - Indianapolis IN 46241 - Phone: (317)612-1000 - Fax: (317)612-1010 - www.mallory-ac.com
Ratings Charts
MSA - Type 2 Standard Duty Ratings
Highlighted case sizes per EIA-463-B
Other case sizes listed are available from Mallory
and also meet EIA-463-B Type 2 test specifications.
MFD
21-25
25-30
30-36
36-43
43-52
47-56
53-64
64-77
72-87
88-106
108-130
124-149
130-156
145-174
161-193
189-227
216-260
233-280
243-292
270-324
324-389
340-408
378-455
400-480
430-516
460-552
540-648
590-708
645-774
708-850
720-864
800-960
815-978
829-995
850-1020
1000-1200
1020-1224
1175-1410
1280-1536
1326-1590
110 Vac
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1 or
2
1 or
2
1 or
2
1 or
2
1 thru
3
1 thru
4
2 thru
4
2 thru
4
2 thru
4
2 thru
4
4 or
5
4 or
5
4 thru
7
4 thru
7
4 thru
7
4 thru
7
4 thru
7
4 thru
8
4 thru
8
5 thru
8
5 thru
8
5 thru
8
5 thru
8
7
125 Vac
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1or
2
1 or
2
1 or
2
1 thru
3
1 thru
3
2 thru
4
2 thru
4
2 thru
4
2 thru
4
2 thru
4
2 thru
4
4 or
5
4 or
5
4 thru
7
4 thru
7
4 thru
7
4 thru
7
4 thru
8
5 thru
8
5 thru
8
5 thru
8
5 thru 8
5 thru 8
7
7
165 Vac
1
1
1
1
1
1
1
1
1
1 or
2
1 or
2
1 or
2
2 thru
4
2 thru
4
2 thru
4
2 thru
4
2 thru
4
2 thru
5
2 thru
5
2 thru
5
4 thru
7
4 thru
7
4 thru
7
4 thru
7
4 thru
8
4 thru
8
4 thru
8
5 thru
8
5 thru
8
5 thru
8
5 thru
8
7 or
8
7 or
8
7 or
8
7 or
8
7 or
8
7
220 Vac
1
1
1
1
1 or
2
1 or
2
1 or
2
1 thru
4
1 thru
4
1 thru
4
1 thru
4
2 thru
5
2 thru
5
2 thru
7
4 thru
7
4 thru
7
4 thru
8
4 thru
8
4 thru
8
4 thru
8
7 or
8
7 or
8
7 or
8
7 or
8
8
8
8
8
8
250 Vac
1
1
1 or
2
1 or
2
1 or
2
1 or
2
1 thru
4
1 thru
4
1 thru
4
2 thru
5
4 or
5
4 or
5
4 or
5
4 thru
7
4 thru
7
4 thru
8
5 thru
8
5 thru
8
5 thru
8
5 thru
8
7 or
8
7 or
8
7 or
8
7 or
8
8
8
8
8
330 Vac
1 or
2
1 or
2
1 thru
4
1 thru
4
2 thru
4
2 thru
4
3 thru
5
4 or
5
4 or
5
4 thru
7
4 thru
8
4 thru
8
5 thru
8
5 thru
8
5 thru
8
7 or
8
7 or
8
7 or
8
7 or
8
7 or
8
8
8
8
8
8
8
MSB - Type 1 Heavy Duty Ratings
EIA-463-B does not specify case sizes for Type 1
Case sizes listed are available from Mallory
and also meet EIA-463-B Type 1 test specifications.
MFD
MFD
110 Vac 115 Vac 125 Vac Vac Vac 220 Vac250 Vac
250 Vac 330 Vac
330 Vac
110 Vac
125 Vac
165 165
220 Vac
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
or
or
or
or
or
or
4
4
5
or
or
or
5
7
7
7
7
7
7
8
8
8
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
or
or
or
4
4
4
5
or
or
or
or
7
7
7
7
7
7
8
8
8
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
3 or 4
3 or 4
3 or 4
3 or 4
3 or 4
4 or 5
4 or 5
5 thru 7
5 thru 7
5 thru 7
5 thru 7
5 thru 7
7
7
7
7
8
8
8
8
8
8
8
8
1
1
1
1
1
1
1 or 2
4
4
4
4
5
5
5 thru 7
5 thru 7
7 or 8
7
7
8
8
8
8
8
8
8
8
1
1
1
2
2
2
3 or 4
4
4
4 or 5
5
5
5
5
7
7
7
8
8
8
8
8
8
8
8
1
1 or 2
2
2
4
4
4
4
4 or 5
5
5
5
6
7
8
8
8
8
8
8
21-25
25-30
30-36
36-43
43-52
47-56
53-64
64-77
72-87
88-106
108-130
124-149
130-156
145-174
161-193
189-227
216-260
233-280
243-292
270-324
324-389
340-408
378-455
400-480
430-516
460-552
540-648
590-708
645-774
708-850
720-864
800-960
815-978
829-995
850-1020
1000-1200
1020-1224
1175-1410
1280-1536
1326-1590
2
2
3
3
3
3
3
3
4
4
4
4
3
3
3
4
4
4
5
5
5
6
6
6
5
6
6
6
6
7
7
7
Part Number Nomenclature
Standard Part Number
Mallory Type Designation
Identifies the basic capacitor design;
MS
A
1
R
10
161
N
Performance
A = EIA Type 2
B = EIA Type 1
S = Special
Case Code
(See standard ratings page)
Case Type
R = Recessed (Standard).
Voltage Rating
10 = 110
22 = 220
12 = 125
25 = 250
16 = 165
33 = 330
Minimum Capacitance
Expressed in microfarads.
Always 3 or 4 digits.
Resistor
N = No resistor (Standard)
R = With Resistor (15k , 2 Watt is standard)
Mallory AC Capacitor LLC - 4411 South High School Road - Indianapolis IN 46241 - Phone: (317)612-1000 - Fax: (317)612-1010 - www.mallory-ac.com
3
Metal Case AC Motor Start Capacitors
Maximum Capacitance for Aluminum Case Designs
per EIA ratings Type 2
Case Code
A1
A2
A3
B2
B3
C2
C3
C4
D2
D3
D4
E3
E4
D x L
(mm)
25 x 45
25 x 61
25 x 75
30 x 61
30 x 75
35 x 61
35 x 75
35 x 101
40 x 61
40 x 75
40 x 101
45 x 75
45 x 101
C
(mm)
10.16
10.16
10.16
10.16
10.16
12.7
12.7
12.7
15.9
15.9
15.9
15.9
15.9
110 Vac
161
243
324
324
460
460
645
850
590
850
1280
1020
1500
125 Vac
145
189
270
270
400
430
590
850
590
829
1175
1020
1410
165 Vac
108
130
189
189
270
270
378
540
400
540
800
645
1000
108
108
161
161
233
324
216
270
430
378
540
72
108
161
124
161
243
216
270
53
72
108
88
108
161
145
189
220 Vac
250 Vac
330 Vac
Insulation hi-pot test is 2000 Vac between metal case and metal foil
wrapped around sleeve for 1 second.
L
2.0
7.7mm Max.
7.7mm Max.
C
0.5
D
1.0
C 0.5
Solder Lug Terminals
(SL)
(25,30mm Cases)
Standard Dual Disconnect Terminals
(DQC)
(35,40,45mm Cases)
Note: Add 1.0mm maximum to diameter and 1.0mm
maximum to length for PVC insulation sleeve.
Metal Case Part Number Nomenclature
Standard Part Number
Mallory Type Designation
Performance
L = EIA Type II
(Standard)
M = EIA Type I
(Special)
Contact Mallory for size information.
G = Extended Run (Special)
Minimum Capacitance
Expressed in Microfarad
Always in 3 or 4 Digits
Tolerance
D = -0 + 20%
Voltage Rating
3 Digits
Case Code
(See Table)
Resistor
N = No resistor (Standard)
R = With Resistor (15k , 2 Watt is standard)
Sleeve
3 = Blue PVC
MS
L
189
D
110
A2
N
3
4
Mallory AC Capacitor LLC - 4411 South High School Road - Indianapolis IN 46241 - Phone: (317)612-1000 - Fax: (317)612-1010 - www.mallory-ac.com
Application Guide for Plastic and Metal Case
Figure A: Type 2 (MSA)
Rated
Voltage Test
Volts AC (rms)
Capacitance Rating
(mfd)
From
To
Duty Cycle
Secs.
(On)
3
/
4
Figure B: Type 1 (MSB)
t
Duration of test
(no. of starts)
Rated
Voltage Test
Volts AC (rms)
Capacitance Rating
(mfd)
From
To
Duty Cycle
Secs.
(On)
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
Secs.
(Off)
Secs.
(Off)
{
Duration of test
(no. of starts)
110
125
165
220
250
330
21-25
130-156
270-324
400-480
590-708
1000-1200
21-25
108-130
161-193
243-292
400-480
645-774
21-25
108-130
130-156
233-280
378-454
21-25
37-56
88-106
161-193
270-324
21-25
36-43
72-86
108-130
216-259
21-25
25-30
36-43
72-86
108-130
124-149
243-292
378-454
540-648
850-1020
1326-1590
88-106
145-174
233-280
378-454
590-708
1326-1890
88-106
124-149
216-259
340-408
850-1020
43-52
72-86
145-174
243-292
460-552
30-36
64-77
88-106
189-227
430-516
21-25
30-36
64-77
88-106
270-324
1
1
1
1
1
3
/
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
29
1
/
4
59
89
119
179
239
29
1
/
4
59
89
119
179
239
59
89
119
179
239
59
89
119
179
239
59
89
119
179
239
59
89
119
179
239
50,000
50,000
33,500
25,000
16,500
12,500
50,000
50,000
33,500
25,000
16,500
12,500
33,500
33,500
25,000
16,500
12,500
33,500
33,500
25,000
16,500
12,500
33,500
33,500
25,000
16,500
12,500
33,500
33,500
25,000
16,500
12,500
{
110
125
165
220
250
330
21-25
130-156
270-324
400-480
590-708
1000-1200
21-25
108-130
161-193
243-292
400-480
645-774
21-25
108-130
130-156
233-280
378-454
21-25
37-56
88-106
161-193
270-324
21-25
36-43
72-86
108-130
216-259
21-25
25-30
36-43
72-86
108-130
124-149
243-292
378-454
540-648
850-1020
1326-1590
88-106
145-174
233-280
378-454
590-708
1326-1890
88-106
124-149
216-259
340-408
850-1020
43-52
72-86
145-174
243-292
460-552
30-36
64-77
88-106
189-227
430-516
21-25
30-36
64-77
88-106
270-324
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
29
1
/
4
29
1
/
4
29
1
/
4
29
1
/
4
29
1
/
4
29
1
/
4
29
1
/
4
29
1
/
4
29
1
/
4
29
1
/
4
29
1
/
4
29
1
/
4
59
59
59
59
59
59
59
89
89
89
59
59
89
89
119
59
59
59
89
119
75,000
75,000
75,000
75,000
75,000
75,000
75,000
75,000
75,000
75,000
75,000
75,000
40,000
40,000
40,000
40,000
40,000
40,000
40,000
33,500
33,500
33,500
40,000
40,000
33,500
33,500
25,000
40,000
40,000
40,000
33,500
25,000
t
The number of starts shown are reduced starts for accelerated
testing so that test time does not exceed 35 days. Type 2 capaci-
tors should be capable of 50,000 starts for ratings to 125 volts
and 40,000 starts for higher voltages. See section 3.0 for testing
procedures.
The number of starts shown are reduced starts for accelerated
testing so that test time does not exceed 35 days. Type 1 capaci-
tors should be capable of 75,000 starts for ratings to 125 volts
and 40,000 starts for higher voltages. See section 3.0 for testing
procedures.
If an application exceeds the duty cycles in Figure B, other meth-
ods of capacitor selection must be used, Contact Mallory for
assistance.
1.1 VOLTAGE RATING
The rated voltage of the capacitor must be greater than or equal
to the average voltage across the capacitor terminals during the
motor starting cycle. This is not necessarily the same as the mo-
tor line voltage. In addition, the cutoff voltage rating of the ca-
pacitor must be greater than or equal to the maximum voltage
attained across the terminals of the capacitor in actual service.
The maximum recommended cut-off voltages for the seven stan-
dard voltage ratings are as follows:
Rated
Maximum
Voltage (rms) Cut-Off Voltage (rms)
110
140
125
160
165
210
220
280
250
300
330
400
These ratings are based on the maximum capacitor temperature
of 65gC.
1.2 CAPACITANCE RATING
The capacitance is chosen to give the necessary starting torque
to the motor. The minimum capacitance value is the minimum
designed capacitance. The maximum capacitance is 20% more
than that value.
1.3 DUTY CYCLE
The duty cycle should be calculated for each application. It is the
ratio of the time the capacitor is on voltage to the total time of one
cycle. The duty cycles for the normal performance of Type 2
(MSA) capacitors are listed in Figure A. Mallory Type MSA
capacitors may be used in any intermittant application within their
temperature and voltage range where the duty cycle does not ex-
ceed that listed in the table in Figure A. This is in accordance
with the standards in EIA-463-B for Type 2 capacitors.
If a particular application exceeds the normal duty cycle, but does
not exceed the values listed in Figure B, an extra performance or
Type 1 (MSB) capacitor is required.
(Continued)
Mallory AC Capacitor LLC - 4411 South High School Road - Indianapolis IN 46241 - Phone: (317)612-1000 - Fax: (317)612-1010 - www.mallory-ac.com
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Noise pollution, gas pollution and solid matter pollution have been called the three major pollutions in the world today. Excessive noise can damage people's health, such as...
Today's computer peripherals are pursuing high speed and high versatility. In order to meet user needs, seven companies led by Intel launched the USB (Universal Serial Bus) bus protocol in 1994, wh...[Details]
In public places such as schools, government agencies, factories and mines, as well as public corridors in residential areas, the phenomenon of long-burning lights is very common, which causes a h...[Details]
When choosing a laptop battery, you should consider several factors, such as power, appearance, and quality.
Regarding power, we often see that a manufacturer uses values such as the number ...[Details]
The solidification and modularization of intelligent video analysis algorithms are the current trends in the application of intelligent video analysis technology. It perfectly combines intelligent ...[Details]
With the rapid development of intelligent control technology, computers and information technology, the trend of information appliances IA (Information Application), computers and communications integ...[Details]
Experimental tasks
A DS18B20 is used to form a temperature measurement system. The temperature measurement accuracy reaches 0.1 degrees. The temperature range is between -20 degrees and +50 de...[Details]
Among the many members of the single-chip microcomputer family, the MCS-51 series of single-chip microcomputers has occupied the main market of industrial measurement and control and automation eng...[Details]
From the previous section, we have learned that the timer/counter in the microcontroller can have multiple uses, so how can I make them work for the purpose I need? This requires setting the timer/...[Details]
In today's body control module (BCM) designs, savvy engineers are moving away from electromechanical relays whenever possible. Their next step is to eliminate fuses. But is eliminating fuses a nece...[Details]
In 2012, more than half of the cars in the European, Japanese and American car markets will be equipped with color displays, navigation systems, satellite communications and other in-vehicle infota...[Details]
According to the Industrial Technology Research Institute of Taiwan, due to factors such as the oil crisis and global warming, the issues of energy conservation and environmental protection have at...[Details]
At present, the traffic congestion in cities is quite serious. According to relevant news reports: In China, the traffic congestion has expanded from megacities such as Beijing, Shanghai, and Guangzho...[Details]
Since the late 1990s, with the demand for higher system efficiency and lower power consumption, the technological update of telecommunications and data communication equipment has promoted the deve...[Details]
0 Introduction
In order to improve the automation control of shortwave transmitters, so that they can automatically process from far to near, the technicians here use the ICS system to complete the ...[Details]
Introduction
Today, as IC (integrated circuit) has developed to a super-large scale, IC design based on IP (Intellectual Property) cores and their reuse are important means to ensure the ef...[Details]
Embedded System
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