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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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#5812681
Marathon S033A 056B17D11028
Brand Marathon Electric
Model S033A
$238.71 Each
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#5812682
Marathon S036A 056B17DRR70009A1
Brand Marathon Electric
Model S036A
$280.69 Each
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#5810818
Marathon U225A 256TTDR16004
Brand Marathon Electric
Model U225A
$1,389.99 Each
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#5810820
Marathon U227A 284TTDN16060
Brand Marathon Electric
Model U227A
$1,716.30 Each
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#5812124
Marathon U344A 254TTFL16008
Brand Marathon Electric
Model U344A
$1,241.59 Each
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#5812126
Marathon U346A 254TTFL16011
Brand Marathon Electric
Model U346A
$1,241.59 Each
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#5812131
Marathon U353B 256TTFL16041
Brand Marathon Electric
Model U353B
$1,652.64 Each
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#5812755
Marathon U430B-P 213TTDWD16075
Brand Marathon Electric
Model U430B-P
$788.46 Each
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#5812756
Marathon U431B-P 215TTDWD16073
Brand Marathon Electric
Model U431B-P
$855.97 Each
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#5811519
Marathon X501-P 056T11O15574
Brand Marathon Electric
Model X501-P
$409.56 Each
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#5811528
Marathon X529-P 056T8O15530
Brand Marathon Electric
Model X529-P
$502.31 Each
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#5811529
Marathon X530-P 056T8O15533
Brand Marathon Electric
Model X530-P
$581.40 Each
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