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General purpose AC induction motors are used to power pumps, blowers, conveyors and other machinery. Inverter-rated motors can be used with variable frequency drives to improve efficiency. From small 1-phase to large 3-phase motors, models are available for general use or hazardous locations.
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General Purpose and Inverter Rated AC Motors
Category Selection
General purpose AC induction motors cover a wide range of applications and are typically controlled by across-the-line starters, i.e. contactors, manual motor starters, etc. All AutomationDirect general purpose 3-phase motors are inverter rated, allowing them to be controlled by AC drives since they can withstand the higher voltage spikes produced by these VFDs.
- Sizes from fractional horsepower up to 300hp, depending on series
- Popular and well-trusted models from Marathon, WEG, and IronHorse brands
- Enclosure styles/ratings may include totally enclosed (TEFC); hazardous location rated
For part listings and specifications, go to Shop Now
IronHorse® General Purpose Rolled Steel
- TEFC 56C-frame single phase 1/3hp to 2hp
- TEFC 56C/56HC-frame 3-phase 1/3hp to 3hp
- Replacement motor capacitors fans, fan covers, mounting bases, terminal boxes available
- STABLE™ adjustable motor slide bases available for motor mounting
Starting at
$167.00
(MTR2-P33-3BD36)
IronHorse® General Purpose Cast Iron
- 3-phase design with Premium Efficiency rating
- 1hp to 300hp
- Totally Enclosed Fan Cooled (TEFC) enclosure
- NEMA TC-frame (C-face) and T-frame
- C-face kits available for motors over 30hp
- Cast iron frame with ribbed design for maximum cooling
- C-flange kits for flange mounting of T-frame motors
- STABLE™ adjustable motor slide bases available for any NEMA motor frame size from 56 to 449T
Starting at
$226.00
(MTCP2-001-3BD18)
IronHorse® Conveyor / Farm Duty T-Frame
- 1-phase 208-230V
- Sizes from 2hp to 10hp
- Totally Enclosed Fan Cooled (TEFC) enclosure
- IP55 environmental rating
- Cast-iron end housings with rolled steel body
- Rigid mounting base
- Steel fan cover
- Large easy-to-wire junction box with rubber gasket
- Heavy duty oversized ball bearings
- High tensile strength steel shaft
- Electrically reversible
Starting at
$600.00
(MTF2-002-1B18-182)
Marathon NEMA Premium XRI®
- 1hp to 2hp, TEFC enclosure
- Meets or exceeds NEMA Premium efficiency ratings
- Optimize motor system efficiency, reduce electrical power consumption and costs, and improve system reliability
- Substantial energy savings when used on high cycle or long run time applications
- Rolled steel construction with C-face rigid base mounting
Starting at
$655.00
(E2001A)
Marathon Globetrotter Rolled Steel
- Sizes up to 100hp
- 208-230/460 VAC
- Rigid Base and C-face with Base mounting
- Meets or exceeds NEMA Premium® efficiencies
- Rolled steel TEFC IP43 rating
- Rolled steel holds same class 1 div2 rating
- Inverter ratings - 10:1 variable torque and 2:1 or 10:1 constant torque, depending on model
- 1.15 Service factor on sinewave, 1.0 service factor on IGBT power
Starting at
$591.00
(GT1010A)
Marathon 4-in-1
- General purpose and 4-in-1 applications, in sizes up to 3hp
- Double-sealed ball bearings, mechanically locked on shaft ends
- Heavy gauge steel construction
- Bolt-on, removable rigid base/C-face mount
- Horizontal or vertical mounting
- Capacitor start/capacitor run design for higher efficiency
- Will accept brake kits (available from Marathon)
Starting at
$275.00
(D311)
WEG Rolled Steel
- 1/4 to 3hp 1-phase
- 1/4 to 20hp 3-phase
- 120/230 VAC in 3600 and 1800 RPM ratings
- 208-230/460 VAC in 3600, 1800, and 1200 RPM ratings
- Premium Efficiency rating for 3-phase 1HP and higher
- Class F insulation
- IP55 environmental rating
- Frame sizes: NEMA 56 to 256
- Rigid base, C-face Rigid base or C-face Footless mounting
- TEFC enclosure
- Certified Class I, Div 2, Groups A,B,C,D for 3-phase models
- Matches well with WEG automation products: CFW VFDs, SSW softstarters, CWB contactors, (P)ESW Enclosed starters
Starting at
$194.00
(.2536ES3E56C-S)
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