(ohmite.com)
Ohmite 65252-50 is a 50 ohm carbon comp variable resister. It is a 4-terminal, dual section variable resistor, with a wiper contact that enables it to give a variable resistance from 0.1 ohm to 50 ohms. The part is available in either PCM style or Ferrite style. It has a 1/4" round bushing, and utilizes a J-hook for terminal mounting. The resistance element is a low salting coating of carbon and graphite particles, embedded in a dielectric oil. The resistor is able to withstand an operating temperature of -55° to +180°C, and a maximum voltage of 1000V. This part is designed for sensitive RF applications and high temperature commercial AC applications.