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Cutler Hammer, Div of Eaton Corp
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A307
Accessories Catalog
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Cutler Hammer, Div of Eaton Corp A307, A308, A309 Catalog Page

IEC Contactors & Starters
Freedom MMPs & Manual and Combination Motor Controllers
March 2009
Types A307, A308, A309 Manual Motor Protectors
Product Selection
Product Selection for Group Motor Installations
34-295
A307, A308 and A309 Manual Motor Protectors are selected based on the overload current range required for a given motor. This current range is determined from the motor Full Load Ampere rating and Motor Service Factor usually found on the motor nameplate.
For motors with service factors less than 1.15, multiply the motor FLA by
.92 to select appropriate MMP.
Example: For motor having FLA of 6.4A and service factor of 1.0 (6.4A x .92 = 5.88A) select Catalog Number A307TN.
See Application Note — AP03402001E.
Table 34-385. Group Motor Installations
— — — — —
— — —
1 1-1/2 1-1/2 2
3 5 5 7-1/2
7-1/2 10 15 15 15
10 15 20 25
30 30 40
30 40 50
60 75 75
1/2 3/4
3/4
— — — — —
— —
1 1-1/2 1-1/2 2 3
3 5 5
10
10 15 20 20 20
15 20 25 30
40 40 50
40 50 60
75 100 100
Maximum Short Circuit Current Rating
65 kA 65 kA 65 kA 65 kA 65 kA
65 kA 65 kA
1/2
65 kA
1/2
65 kA
3/4
65 kA
65 kA 65 kA 65 kA 65 kA 65 kA
65 kA 65 kA 65 kA 65 kA
65 kA 65 kA 65 kA 65 kA 65 kA
65 kA 65 kA 65 kA 65 kA
65 kA 65 kA 65 kA
65 kA 65 kA 65 kA
65 kA 65 kA 65 kA
30 kA 30 kA 30 kA 30 kA 30 kA
30 kA 30 kA 30 kA 30 kA 30 kA
30 kA 30 kA 30 kA 30 kA 30 kA
30 kA 30 kA 30 kA 30 kA
30 kA 10 kA 10 kA 10 kA 10 kA
25 kA 25 kA 25 kA 25 kA
25 kA 25 kA 25 kA
30 kA 30 kA 30 kA
30 kA 10 kA 10 kA
Catalog Number
A307AN A307BN A307CN A307DN A307EN
A307FN A307GN A307HN A307JN A307KN
A307LN A307MN A307NN A307PN A307RN
A307SN A307TN A307UN A307VN
A307WN A307XN A307YN A307ZN A307Z25N
A308LN A308MN A308NN A308PN
A308RN A308SN A308TN
A309RN A309SN A309TN
A309UN A309VN A309WN
FLA Adjustment Range
Single-Phase hp Ratings
115V 230V 200V 230V 460V 575V 460V 600V
Three-Phase hp Ratings
A307
0.11 – 0.16
0.14 – 0.2
0.18 – 0.25
0.22 – 0.32
0.28 – 0.4
0.35 – 0.5
0.45 – 0.63
0.55 – 0.8
0.7 – 1
0.9 – 1.25
1.1 – 1.6
1.4 – 2
1.8 – 2.5
2.2 – 3.2
2.8 – 4
3.5 – 5
4.5 – 6.3
5.5 – 8 7 . – 10
9 – 12.5 11 – 16 14 – 20 17 – 22 20 – 25
— — — — —
— — — — —
— — — — —
1 1-1/2 2 2
1/6 1/4 1/3 1/2
1/2
— — — — —
— — — — —
— —
1 1-1/2
2 3 3 3 5
1/6 1/4 1/3
1/2 3/4
— — — — —
— — — — —
— —
1 1-1/2 2 3
3 5 5 7-1/2 7-1/2
1/2 3/4 3/4
— — — — —
— — — — —
— —
1/2 3/4
1
1 1-1/2 2 3
3 5 7-1/2 7-1/2 7-1/2
A308
11 – 16 14 – 20 18 – 25 22 – 32
28 – 40 36 – 45 40 – 50
1 1-1/2 2 3
3 5 5
3 3 5 5
7-1/2 7-1/2
10
5 5 7-1/2
10
15 15 15
5
7-1/2 10 10
15 15 20
A309
28 – 40 36 – 50 45 – 63
57 – 75 70 – 90 80 – 100
Select Manual Motor Protectors for use with group motor installations by full load amperes. Horsepower ratings are for reference only.
3 5 5
7-1/2 10 10
7-1/2 10 15
15 20 25
15
15
15
20
20
25
25
25
30
30
40
40
34
A307
Price U.S. $
A308
A309
For motor with service factor of 1.15 or greater, use motor nameplate Full
Load Amperes to select the appropriate MMP.
Example: For motor having FLA of
6.4A and service factor of 1.15, select Catalog Number A307UN.
Discount Symbol . . . . . . . . . . . . . . . . . . . . . . . 1CD-1
34
IEC Contactors & Starters
Freedom MMPs & Manual and Combination Motor Controllers
Types A307, A308, A309 Manual Motor Protectors
Product Selection for UL 508 Type E Self-Protected Manual Combination Starter Applications
A307, A308 and A309 Manual Motor Protectors are selected based on the overload current range required for a given motor. This current range is determined from the motor Full Load Ampere rating and Motor Service Factor usually found on the motor nameplate.
Table 34-386. UL 508 Type E Self-Protected Manual Combination Starters
FLA Adjustment Range
A307
0.11 – 0.16
0.14 – 0.2
0.18 – 0.25
0.22 – 0.32
0.28 – 0.4
0.35 – 0.5
0.45 – 0.63
0.55 – 0.8
0.7 – 1
0.9 – 1.25
1.1 – 1.6
1.4 – 2
1.8 – 2.5
2.2 – 3.2
2.8 – 4
3.5 – 5
4.5 – 6.3
5.5 – 8 7 . – 10
9 – 12.5 11 – 16 14 – 20 17 – 22
A308
11 – 16 14 – 20 18 – 25 22 – 32
28 – 40 36 – 45 40 – 50
A309
28 – 40 36 – 50 45 – 63
57 – 75 70 – 90 80 – 100
A C320LSA1 Line Side Adapter is required to be installed on the line side of all A307 MMPs when they are used as non-Group Installation Self-Protected Manual Combination Starters. See Page 34-299.
A C320LSA2 Line Side Adapter is required to be installed on the line side of all A309 MMPs when they are used as non-Group Installation Self-Protected Manual Combination Starters. See Page 34-299.
Select UL 508 Type Manual Combination Starter by full load amperes. Horsepower ratings are for reference only.
A308 MMPs do not require Line Side Adapters.
Note: A UL 508 Type F Combination Motor Controller consists of a UL 508 Type E Self- protected Manual Combination Starter, a UL Listed Contactor and a UL Listed Line Side Adapter (depending on the application). The Type E Self-Protected Manual Combination Starter alone is a legitimate short-circuit protective device and disconnect means for the downstream motor, while the contactor has been added to provide remote operation of the motor circuit.
Single-Phase hp Ratings
115V 230V 200V 230V 460V 575V 240V
— — — — —
— — — — —
— — — — —
1/6 1/4 1/3 1/2
1/2 1 1-1/2 2
1 1-1/2 2 3
3 5 5
3 5 5
7-1/2
10 10
Three-Phase hp Ratings
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1/6
1/2
1/4
3/4
1/2
3/4
1/2
1
3/4
1-1/2
1
2
1-1/2
3
2
3
3
5
3
5
3
7-1/2
3
5
3
5
5
7-1/2
5
10
7-1/2
15
7-1/2
15
10
15
7-1/2
15
10
15
15
20
15
25
20
30
25
40
— — — — —
— — — — —
— —
1/2 3/4
1 1
1-1/2 2 3
3 5 7-1/2 7-1/2
5
7-1/2 10 10
15 15 20
15 20 25
25 30 40
For motors with service factors less than 1.15, multiply the motor FLA by
.92 to select appropriate MMP.
Example: For motor having FLA of 6.4A and service factor of 1.0 (6.4A x .92 = 5.88A) select Catalog Number A307TN.
See Application Note — AP03402001E.
— — — — —
— — —
1 1-1/2 1-1/2 2
3 5 5 7-1/2
7-1/2 10 15 15
10 15 20 25
30 30 40
30 40 50
60 75 75
1/2 3/4
3/4
— — — — —
— —
1 1-1/2 1-1/2 2 3
3 5 5
10 10
15 20 20
15 20 25 30
40 40 50
40 50 60
75 100 100
Maximum Short Circuit Current Rating
480Y/ 277V
65 kA 65 kA 65 kA 65 kA 65 kA
65 kA 65 kA
1/2
65 kA
1/2
65 kA
3/4
65 kA 65 kA
65 kA 65 kA 65 kA 65 kA
65 kA 65 kA 65 kA 65 kA
65 kA 65 kA 65 kA 65 kA
65 kA 65 kA 65 kA 65 kA
65 kA 65 kA 65 kA
65 kA 65 kA 65 kA
65 kA 65 kA 65 kA
600Y/ 347V
30 kA 30 kA 30 kA 30 kA 30 kA
30 kA 30 kA 30 kA 30 kA 30 kA
30 kA 30 kA 30 kA 30 kA 30 kA
30 kA 30 kA 30 kA 30 kA
30 kA 10 kA 10 kA 10 kA
25 kA 25 kA 25 kA 25 kA
25 kA 25 kA 25 kA
30 kA 30 kA 30 kA
30 kA 10 kA 10 kA
Catalog Number
A307AN A307BN A307CN A307DN A307EN
A307FN A307GN A307HN A307JN A307KN
A307LN A307MN A307NN A307PN A307RN
A307SN A307TN A307UN A307VN
A307WN A307XN A307YN A307ZN
A308LN A308MN A308NN A308PN
A308RN A308SN A308TN
A309RN A309SN A309TN
A309UN A309VN A309WN
Price U.S. $
A307
A308
A309
For motor with service factor of 1.15 or greater, use motor nameplate Full
Load Amperes to select the appropriate MMP.
Example: For motor having FLA of
6.4A and service factor of 1.15, select Catalog Number A307UN.
Discount Symbol . . . . . . . . . . . . . . . . . . . . . . . 1CD-1
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