Contactor Starter
Question about reversing the direction of motors?
Why is mechanical interlocking used on forward and reversing starter combinations?
What type of interlocking uses a normally closed contact on the starter to lock out the other starter?
Why are indicator lights often used with forward and reversing circuits?
Are ‘normally open’ or ‘normally closed’ contacts used when a limit switch is used to stop a motor that is running in one direction?
When reversing the direction of a three phase motor, are the leads interchanged on the LINE side of the contactors or on the LOAD side of the contactors?
Mechanical interlocking is used to prevent “electrical over ride” of reversing starters to prevent someone from physically pushing reversing coil in.
Normally closed contact being used as “anti-reversing” lock out is “Electrical Interlocking” as opposed to Mechanical Interlocking.
Indicator lights are used to give a heads up as to which direction motor IS turning. Sometimes used in conjunction with a “Motor Not Turning” Light.
Choice of Normally Open (NO) or Normally Closed (NC) on a limit switch USUALLY depends on whether or not you want a “Fail Safe” condition. If you use the NC contacts on the Limit Switch to stop the motor, if the circuit opens FOR ANY REASON, then the motor stops. This is Fail Safe circuit. If you use the NO contacts and the circuit fails, the motor would continue to run because the circuit would ALWAYS be open. This would NOT be Fail Safe, but still acceptable if you do not need Fail Safe.
The switching of the leads for the three Phase motor should be done on the LOAD side of the contacter.
Solid State Motor Starter with e-stop, forward, reverse and overload protection. – Phoenix Contact
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Furnas D17365-20 Motor Starter Coil / Contactor Coil
$35.00 |
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GE: CR153H031APA Large Contactor/Motor Starter 110 Amp
$375.00 |
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Furnas D17365-24 Motor Starter Coil / Contactor Coil
$35.00 |
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Allen Bradley Starter Contactor 509-COH 45A 600V SER A
$19.99 |
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ALLEN BRADLEY 100-C16*10 CONTACTOR STARTER 100C16 100
$9.12 |
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NEW ABB Motor Starter Contactor A26-40-00-84 A26400084
$19.99 |
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Furnas 75D198583 Motor Starter Coil / Contactor Coil
$35.00 |
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Furnas D2936-31 Motor Starter Coil / Contactor Coil
$65.00 |
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Furnas D2936-32 Motor Starter Coil / Contactor Coil
$65.00 |
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Furnas D2936-33 Motor Starter Coil / Contactor Coil
$65.00 |
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Furnas D2936-47 Motor Starter Coil / Contactor Coil
$65.00 |
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Furnas D2936-66 Motor Starter Coil / Contactor Coil
$65.00 |
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Furnas D2936-71 Motor Starter Coil / Contactor Coil
$95.00 |
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Furnas D50833-53 Motor Starter Coil / Contactor Coil
$20.00 |
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Furnas D50833-5 Motor Starter Coil / Contactor Coil
$20.00 |
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Furnas D50833-93 Motor Starter Coil / Contactor Coil
$20.00 |
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Furnas 75D50833F Motor Starter Coil / Contactor Coil
$20.00 |
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Furnas 75D50840G Motor Starter Coil / Contactor Coil
$20.00 |
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Furnas 75D52516G Motor Starter Coil / Contactor Coil
$20.00 |
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Furnas D52611-1 Motor Starter Coil / Contactor Coil
$20.00 |
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Furnas 75D52516F Motor Starter Coil / Contactor Coil
$25.00 |
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Furnas 75D53735E Motor Starter Coil / Contactor Coil
$25.00 |
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Furnas 75D53735H Motor Starter Coil / Contactor Coil
$25.00 |
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Furnas 75D54760J Motor Starter Coil / Contactor Coil
$10.00 |
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Furnas D54964-1 Motor Starter Coil / Contactor Coil
$10.00 |
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Furnas D55080-1 Motor Starter Coil / Contactor Coil
$10.00 |
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Furnas 75D55080F Motor Starter Coil / Contactor Coil
$10.00 |
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Furnas 75D50833J Motor Starter Coil / Contactor Coil
$10.00 |
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Furnas 75D56630J Motor Starter Coil / Contactor Coil
$20.00 |
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Furnas 71221-31 Motor Starter Coil / Contactor Coil
$100.00 |
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2 HP Motor Starter Westinghouse Contactor- NEW!!!!!
$25.00 |
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Allen Bradley Motor Starter Contactor Nema Size 0 - 4
$9.60 |
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Allen Bradley Starter Contactor 509-TOD
$30.00 |
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Telemecanique GV1-M20 Manual Motor Starter Contactor
$32.00 |
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Siemens 3VU1300-1MK00 Manual Motor Starter Contactor
$80.00 |
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CONTACTOR STARTER TELEMECANIQUE LC1-EE 03 LR3-E006 EE03
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ENCLOSED MOTOR STARTER CONTACTOR 480V 2.3A OVERLOAD NEW
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ENCLOSED MOTOR STARTER CONTACTOR 575V 1.5A OVERLOAD NEW
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ENCLOSED MOTOR STARTER CONTACTOR 575V 2.3A OVERLOAD NEW
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ENCLOSED MOTOR STARTER CONTACTOR START STOP 17-21A 24V
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ENCLOSED MOTOR STARTER CONTACTOR START STOP 17-21A 120V
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ENCLOSED MOTOR STARTER CONTACTOR START STOP 17-21A 220V
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ENCLOSED MOTOR STARTER CONTACTOR START STOP 17-21A 440V
$59.99 |
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ENCLOSED MOTOR STARTER CONTACTOR START STOP 21-25A 120V
$59.99 |
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ENCLOSED MOTOR STARTER CONTACTOR START STOP 21-25A 220V
$59.99 |
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ENCLOSED MOTOR STARTER CONTACTOR START STOP 21-25A 24 V
$59.99 |
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ENCLOSED MOTOR STARTER CONTACTOR START STOP 21-25A 440V
$59.99 |
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ENCLOSED MOTOR STARTER CONTACTOR START STOP 26-32A 120V
$59.99 |
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ENCLOSED MOTOR STARTER CONTACTOR START STOP 26-32A 220V
$59.99 |
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ENCLOSED MOTOR STARTER CONTACTOR START STOP 26-32A 24 V
$59.99 |