Precision Wire Wound Variable Resistor

Part Number 28W3-2157

Quality inspected with certificate of conformity. For questions and pricing call us at +1 210-468-8090

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Features

Includes quality control certificate of conformance.

Specifications

  • Section Quantity:
    3
  • Body Style:
    Cylindrical hole/slot mounted
  • Reliability Indicator:
    Not established
  • Body Diameter:
    1.755 inches
  • Shaft Diameter:
    0.250 inches
  • Shaft Length:
    1.312 inches
  • Body Length:
    1.902 inches
  • Mounting Hole/stud Circle Diameter:
    0.875 inches
  • Shaft Style:
    Round, slotted
  • Actuator Type:
    Single shaft
  • Effective Electrical Rotation In Deg Angular Rotation:
    350.0
  • Maximum Starting Torque:
    3.50 inch-ounces
  • Maximum Running Torque:
    1.50 inch-ounces
  • Shaft Runout:
    0.001 inches
  • Screw Thread Diameter:
    0.138 inches
  • Screw Thread Series Designator:
    Unc
  • Screw Thready Qty Per Inch (tpi):
    32.0
  • Mounting Facility Quantity:
    4
  • Terminal Location:
    Radially positioned over less than half the circumference
  • Mounting Method:
    Threaded hole
  • Electrical Resistance Per Section:
    50.000 percent, rated amperes c and better finish
  • Electrical Resistance Per Section:
    80.000 percent, rated amperes c and better industrial clears
  • Electrical Resistance Per Section:
    80.000 percent, rated amperes c and better select
  • Tap Location From Ccw Terminal Per Section In Deg Of Effective Electrical Rotation:
    180.0 all sections
  • Rotary Actuator Travel In Angular Deg:
    360.0
  • Function Conformity Tolerance Per Section:
    -0.15/+0.15 3rd section
  • Function Conformity Tolerance Per Section:
    -0.20/+0.20 1st section
  • Function Conformity Tolerance Per Section:
    -0.20/+0.20 2nd section
  • Ambient Tempurature In Deg Celsius Per Section At Zero Percent Rated Power:
    150.0 all sections
  • Power Dissipation Rating Per Section In Watts:
    2.0 free air all sections
  • Function Conformity Per Section:
    All sections independent linearity
  • Fixed Tap Quantity Per Section:
    1 all sections
  • Resistance Tolerance Per Section In Percent:
    -5.0/+5.0 all sections
  • Actuator Travel Control Feature:
    Continuous motion
  • Function Characteristic Per Section:
    All sections linear
  • Tempurature Coefficient Of Resistance Wire Per Section In Ppm Per Deg Celsius:
    -20.0/+20.0 all sections
  • Ambient Tempurature In Deg Celsius Per Section At Full Rated Power:
    85.0 all sections
  • Terminal Type And Quantity:
    12 tab, solder lug
  • Federal Supply Class (fsc):
    Resistors
  • National Stock Number (nsn):
    5905-00-755-0739

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