High Precision Proportional Controls for automating analog driven devices for high wattage. Rheostats are designed and manufactured to operate smoothly and reliably over long periods of use. Used for equipment requiring convenient variable resistance settings. Windings are linear taper and tolerance ± 10%. Wattage based on 25°C. Panel Mount units. Standard Wattage values 25, 50 and 100 Watt. Both AC reversible motors and DC motors are available. DC motors are available in 12 VDC and 1 or 2 RPMs. AC motors are available in 115 VAC and 1, 2, 3, 5, and 10 RPM’s.