The OHMITE REL25RE is a wirewound rheostat, a type of variable resistor used for controlling electrical power. These devices are commonly employed in industrial equipment, audio systems, and other applications requiring adjustable resistance. The REL25RE model features a robust design and is suitable for demanding environments. Consult catalog #203 for complete specifications and application details. Due to their electro-mechanical nature, these rheostats have a finite lifespan.