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Century® Multi-Speed • Three Phase Motors
Dripproof - Rigid Base - Two Speed
Variable Torque - 1/.25 thru 50/12.5 HP
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For two-speed, one and two winding, variable torque applications for speed control from one speed to another while under load.
Blowers, fans, conveyors, mixing machines, centrifugal pumps.
Oper. HP Oper. HP Full Load Stock Insul. “C” High Spd. Low Spd.
HP RPM High
Spd.*
Low
Spd.*
Volts Amps Frame Number Class Rotation Dim. Efficiency Efficiency Notes
2-1-VT ·Two Speed · One Winding · Variable Torque
 1~.25
 1745/850 1 .12 200-230 3.5-3.4/1.5-1.6 143T M126 B RCC 12.1 76.0 59.0 1,
21
 1~.25
 1725/850 1 .12 200-230 3.5-3.4/1.4-1.4 56 M126V1 B RCC 12.1   30,
New!
 1~.25
 1725/850 1 .12 460 1.7/6.5 143T M116V1 B RCC 12.1   New!
 1.5~.37 1745/845 1-1/2 .19 200-230 5.0-5.0/2.0-2.0 145T M127V1 B RCC 12.6   New!
 1.5~.37 1725/850 1-1/2 .19 460 2.4 145T M120V1 B RCC 12.6   New!
 2~.5 1745/850 2 .25 230 6.6/2.4 145T M128L F RCC 13.1   21,
New!
 3~.75
 1745/850 3 .375 200-230 10.1-11.6/4.1-4.4 182T M222 F CCW 13.7 82.0 72.0
 3~.75 1760/875 3 .375 460 6.6/2.4 182T M206 F CCW 13.7 80.0 66.0
 5~1.25 1760/870 5 .63 200-230 16.0-17.7/6.2-6.2 184T M223 F CCW 13.7 85.0 77.0
 5~1.25 1750/870 5 .63 460 9.1/3.2 184T M302 F CCW 13.7 84.0 73.0
 7.5~1.9 1740/870 7-1/2 .94 200-230 23.0-22.5/9.3-8.2 213T M321 F CCW 17.3 85.0 72.0
7.5~1.9
 1740/870 7-1/2 .94 460 11.8/4.2 213T M312 F CCW 17.3 85.0 72.0
10~2.5
 1745/870 10 1.25 200-230 27.7-32.4/11.2-11.6 215T M322 F CCW 17.3 88.0 77.0
 10~2.5 1750/870 10 1.25 460 15.0/5.3 215T M313 F CCW 17.3 83.0 71.0
 15~3.7 1760/880 15 1.87 200-230 42.5-40.0/16.5-17.0 256T M425 F CCW 22.1 90.2 84.0
15~3.7 1750/875
15 1.87 460 19.3/7.8 256T M412 F CCW 22.1 88.5 81.5
 20~5 1755/875 20 2.50 200-230 56.0-51.0/21.5-21.5 284T M520 F CCW 24.3 90.2 82.5
20~5
 1745/870 20 2.50 460 25.2/10.0 256T M424 F CCW 22.1 89.5 82.5
 25~6.25 1740/865 25 3.12 460 31.0/12.0 286T M506 F CCW 24.3 89.5 84.0
30~7.5 1740/870 30 3.75 460 35.5/13.5 286T M513 F CCW 24.2 90.2 85.5
         
 1.Itemtobediscontinuedwhenstockisdepleted
 21.Terminalinbracketconstruction
 30.56,140framecombinationbase(12mountingholes)
* Theoperatinghorsepowerisbasedonthetypeloadwherethehorsepowerrequired
variesasthecubeofthespeed.Examplesofsuchloadsarefanorblowersystems
andcentrifugalpumps.Two-speedmotorperformancedatasheetsareavailablefrom
yourCenturyCustomerServiceCenter.
• Ball Bearings • Service Factor 1.15 • 60 Hz • 40˚C Ambient
M312