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Description: Most industrial motors require AC (alternating current) voltage whose polarity oscillates 60 times a second (for a frequency of 60 Hertz) between positive and negative. Single phase AC motors have brushes just like DC motors. Most of them have capacitors to assist starting and to establish the direction of rotation. Changing direction implies changes in the capacitors’ connection. Speed is directly proportional to the applied voltage (just like DC motors). Usage is restricted to low-power uses (home appliances like vacuum cleaners, washing machines, coffee grinders, or power tools like rotary hammers etc.). For higher power requirements, three-phase AC motors are used. These do not have carbon brushes to wear out, their rotors (called squirrel cages) have no electrical connections, thus making them extremely robust and long-lived. Only the stator windings are connected to the power line. They just keep turning as long as their ball bearings are OK. Changing direction requires swapping any two of the three phase lines. Speed control is done by modifying the frequency of the AC delivered to the motor; this can be done using complex devices called AC drives.
Item ID
Item
Price
Quantity
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#2303800
GT3433 Marathon Electric
Brand Marathon Electric
Model GT3433
$2,221.78 Each
Free Shipping
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#2304465
GT2502 Marathon Electric
Brand Marathon Electric
Model GT2502
$564.32 Each
Free Shipping
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#2303497
GT3205 Marathon Electric
Brand Marathon Electric
Model GT3205
$743.95 Each
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#2303743
GT3428 Marathon Electric
Brand Marathon Electric
Model GT3428
$1,854.16 Each
Free Shipping
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#2303625
U641A Marathon Electric
Brand Marathon Electric
Model U641A
$716.59 Each
Free Shipping
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#2303892
U904A Marathon Electric
Brand Marathon Electric
Model U904A
$5,300.83 Each
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#2303702
GT3524 Marathon Electric
Brand Marathon Electric
Model GT3524
$1,484.84 Each
Free Shipping
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#2303576
GT3116 Marathon Electric
Brand Marathon Electric
Model GT3116
$1,030.01 Each
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#2303835
GT3237 Marathon Electric
Brand Marathon Electric
Model GT3237
$3,027.44 Each
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#2303543
GT3408 Marathon Electric
Brand Marathon Electric
Model GT3408
$778.12 Each
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#2303646
GT2417 Marathon Electric
Brand Marathon Electric
Model GT2417
$1,303.38 Each
Free Shipping
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#2304468
GT3402 Marathon Electric
Brand Marathon Electric
Model GT3402
$678.54 Each
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