Cutler Hammer, Div of Eaton Corp A302 Catalog Page
IEC Contactors & Starters
Freedom MMPs & Manual and Combination Motor Controllers
March 2009
Product Selection
When ordering, specify Catalog Numbers
according to the following stipulations:
A302 MMPs 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 34-382. Product Selection — Type A302 Manual Motor Protector
Adjustable
Thermal Current
Range (Amperes)
.10 – .16
.16 – .25
.25 – .4
.40 – .63
.63 – 1.0
1.0 – 1.6
1.6 – 2.5
2.5 – 4.0
4.0 – 6.3
6.3 – 10.0
10.0 – 16.0
16.0 – 20.0
20.0 – 25.0
Single-phase horsepower ratings are based on wiring the three MMP poles in series.
Select MMP by full load amperes. Horsepower ratings are for reference only.
Maximum Single-Phase
Horsepower
115V 200V 230V 200V 230V 460V 575V Maximum Fuse or
—
—
—
—
—
—
—
1/8
1/4
1/2
1
1-1/2
2
—
—
—
—
—
—
1
2
3
—
1/8
1/4
1/2
—
—
—
—
—
1/10
1/6
1/3
1/2
1-1/2
2
3
—
Type A302 Manual Motor Protectors
For motors with service factors less
than 1.15, multiply the motor FLA by
.9 to select appropriate A302 MMP.
Example: For motor having FLA of
6.4A and service factor of 1.0 (6.4A x
.9 = 5.76A) select Catalog Number
A302JN.
Maximum 3-Phase Horsepower
—
—
—
—
—
—
1/2
3/4
1-1/2
2
3
5
—
—
—
—
—
—
—
1/2
1
1-1/2
3
5
—
7-1/2
—
—
—
—
1
2
3
5
10
—
15
1/2
3/4
—
—
—
—
1/2
1
1-1/2
3
5
7-1/2
10
15
20
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 A302KN.
Group Motor
Applications
480V Maximum
Circuit Breaker
Amperes
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
Catalog
Number
A302AN
A302BN
A302CN
A302DN
A302EN
A302FN
A302GN
A302HN
A302JN
A302KN
A302LN
A302MN
A302NN
Price
U.S. $
34-291
34
Discount Symbol . . . . . . . . . . . . . . . . . . . . . . . 1CD-1
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