Panel Potentiometer

Model P270 / P271 / P272 / P278

General Note

TT Electronics reserves the right to make changes in product specification without

notice or liability. All information is subject to TT Electronics’ own data and is

considered accurate at time of going to print.

© TT electronics plc

TT Electronics | BI Technologies

413 Rood RD, Suite 7

Calexico, CA 92231

Ph: + 1 (714) 447-2345

www.ttelectronics.com

Rev - 04/2021 Page 1

Description:

27,8mm Diameter Conductive Plastic Potentiometer for Heavy Duty Applications and Long Life

Applications:

•

Machine Controls

•

Welding equipment

•

Foot pedal controls

Features:

•

1,000,000 Cycle Life

•

Sealed unit available

•

Conductive Plastic element

•

Dual Gang available

•

Center Tap available

•

Several electrical angles available to cross to Honeywell 380, RV4,

485, 53C and 385 Series

•

Meets MIL-PRF-94 requirements.

Electrical Characteristics

TA = 25ᵒC unless otherwise noted

Resistance Range

200 ohms-1MEG (for “B” taper)

1K-1MEG (for other tapers)

Standard Resistance Tolerance

1K to 1 MEG: ±10%

<500 ohms: ±20%

Residual Resistance

6 ohms max.

Nominal Electrical Travel,

See Page 3 for available Electrical angles

Input Voltage, maximum

500 Vdc not to exceed power rating

Rated Power

2.0 Watts @70°C for “B” Taper, 1.0 Watt for other tapers

Dielectric Strength

1000 VAC, 1 minute

Rotational Noise

100mV max.

Insulation Resistance

50M ohms at 500 Vdc

Gang Error (Dual Unit)

±3dB (-40dB to 0dB)

Solder Lugs, Single Gang

P270

Solder Lugs, with Center Tap

P271

Solder Lugs, Dual Gang

P272

Solder lugs, Single Gang for heavy side load applications

P278

Model Styles Available