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Single Turn Wire Wound Potentiometer, R.W-7.5

PANKAJ, the popular brand for panel mounted Wire Wound Potentiometers, manufactures model R. W. 7.5 product best suited for Railways & battery charges applications etc. This product is also available with Screw / nut type stud terminals. Incidentally this is the only product of its kind in market.


  • Brass Nickel Plated Bush & Spindle
  • Tin Plated Terminals
  • Thermoset Housing

Optional Features

  • Various Shaft Lengths and Designs
  • Stud type terminals

Electrical Specifications

Resistance Range 50Ω to 50KΩ
Resistance Tolerance +10% Standard, +5% Special
Power Rating 7.5 Watt @ 40°C
End Resistance 0.2Ω or 0.02 % which ever is greater
Elec. Angle of Rotation 265° + 15°
Maximum Working Voltage 500VDC
Insulation Resistance 500MΩ @ 500VDC
Voltage Proof 1500VAC for 1 Min. At Sea level
TCR of Resistance Wire 150ppm/°C
Rotational Life Expectancy 20,000 Cycles at 15 RPM
Temperature Range 0 – 70°C.

Mechanical Specifications

Housing Diameter 48mm
Housing Length 38mm
Shaft Diameter 6.3mm
Shaft Length 41mm
Bush Mounting 3/8″ x 32 TPI, 10mm Long
Mechanical Angle of Rot. 285° + 15°


  • Railway Battery Chargers,
  • Power Supplies,
  • AC/DC Motor Drives,
  • Process Control Equipments,
  • Test and Measuring Instruments,
  • Control Panels,
  • Offset Settings & many more.

Dimensional Diagram


Other Options



Ordering Information Example: R.W-7.5, 20K, 41mm

Model No. Resistance Value Shaft Length in mm Other Options
R. W-7.5 50, 100, 250, 500, 1K, 2K, 2K5, 3K, 5K,
10K, 20K, 25K, 50K
41mm or as required P – Locking Plate
L – Shaft Locking Nut


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