Marathon U1872A 20 HP, 1800 RPM three-phase general purpose motor with a NEMA 256TV frame and Totally Enclosed Air Over (TEAO) enclosure. Operates on 230/460V at 60 Hz with a 1.15 service factor. Designed for fan and blower applications where the driven equipment provides cooling airflow.

Ambient temperature (°C)

40

Assembly/box mounting

F1/F2 CAPABLE

CE

Y

Country of Origin

Mexico

CSA

Y

Current

48.5/24.2 & 44.5/22.3 A

Design code

B

Drive end bearing

Ball

Drive end bearing size

6309

Duty

Continuous

Efficiency

93 & 92.7 %

Electrical type

Squirrel Cage Inverter Rated

Enclosure

Totally enclosed air over

Frame

256TV

Frame Material

Cast iron

Frequency

60 & 50 Hz

Insulation class

H

Inverter Load

1

IP code

56

KVA code

G

Motor orientation

Horizontal Or Up Or Down

Mounting

Rigid base

Number of speeds

1

Opp drive end bearing

Ball

Opp drive end bearing size

6209

Output HP

20 & 15 Hp

Output KW

14.9 & 11.2 kW

Packaged height

20.00 IN

Packaged length

28.00 IN

Packaged width

24.00 IN

Phase

3

Poles

4

Power factor

83.5

Resistance main

.513 Ohms

Rotation

Reversible

Service factor

1.15 & 1.15

Shaft diameter

1.625 in

Shaft type

T

Speed

1768 & 1472 rpm

Starting method

Line Or Inverter

Thermal protection

No protection

UL

Recognized

Voltage

230/460 & 190/380 V