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Speed Switching for Over 65 years
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Motor Switch Selector
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All Categories > Motor and Switch Replacement Parts > SINPAC® Solid State Switches > VR Series Switches for 115 or 115/230 Voltage (VAC) Dual Voltage Capacitor Start/Capacitor Run Motor > View Items  
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VR Series Switches for 115 or 115/230 Voltage (VAC) Dual Voltage Capacitor Start/Capacitor Run Motor

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Basic Operation

Capacitor start/capacitor run motors provide continuous voltage sensing information which can be used to extract speed data from the voltage across the motor start winding. By comparing this start winding RPM-sensitive voltage to the main AC input voltage (which serves as a reference voltage), the switch determines when the start circuit should be de-energized. The electronic switch interrupts the start circuit current after the motor has accelerated to the cut out voltage (speed), and reconnects the start circuit whenever the speed sensitive circuit senses the motor voltage (speed) has decreased to a preselected cut in voltage (RPM) level.

Capacitor start/capacitor run motors exhibit current transients and higher voltages across the start switch. These electrical stresses occur due to the switching of the two capacitors (start and run) that are connected in parallel during motor start and may have different voltages at time of restart. These stresses occur at restart with both mechanical and electronic start switches. The VR switch features circuitry designed to eliminate the effects of these conditions.




   
  Results 1 - 6 of 6 1 

Item Number

Typical Maximum Motor

Typical
Full Load Motor
Current Rating (115 Volts)

Switch Rating Permissible Max Start Capacitor Current

Typical Cut Out Voltage

Typical Cut In Voltage

List Price

VR-16-130 1/2 hp 8 A 16 A 130 V
147
V
30 V
37
V
QUOTE
VR-16-165 1/2 hp 8 A 16 A 165 V 37 V QUOTE
VR-40-130 2 hp 20 A 40 A 130 V
147
V
30 V
37
V
$68.76
VR-40-165 2 hp 20 A 40 A 165 V 37 V $57.00
VR-50-130 3 hp 25 A 50 A 130 V
147
V
30 V
37
V
$79.17
VR-50-165 3 hp 25 A 50 A 165 V 37 V $58.63
  Results 1 - 6 of 6 1 

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