Overview
The Ohmite RLS500 Model L is an industrial-grade wirewound rheostat potentiometer designed for applications requiring stable, adjustable resistance. Ohmite rheostats are designed and manufactured to operate smoothly and reliably over long periods of use. This 150W, 500-ohm unit delivers the precision and durability demanded in control systems, motor drives, and power supply circuits.
Key Features
- 150W power rating, 500 ohm resistance, ±10% tolerance
- Open-core ceramic body with high-grade resistance alloy linear taper windings and vitreous enamel coating
- 1-turn, 300-degree rotational angle for precise adjustment
- Panel mount configuration with flatted adjustment and solder lug terminals
- 0.548A maximum current rating for safe operation
- Suitable for motor speed controls, lighting dimmer circuits, and variable resistance settings
Technical Specifications
For complete technical details and performance curves, consult the RLS500 datasheet available from authorized distributors.
Typical Applications
- AC and DC motor speed control circuits
- Industrial lighting dimmer systems
- Power supply load regulation and bias adjustment
- Equipment requiring convenient variable resistance settings
- Testing and diagnostic equipment calibration
Compatibility & Replacements
Compatible With
- Industrial control systems requiring panel-mounted potentiometer input
- Motor speed control circuits and starter applications
- Light dimmer and intensity control systems
- Variable supply voltage and load adjustment applications
Replaces / Drop-In Replacement For
- Other Ohmite RLS Series rheostats with equivalent specifications (verify model variant before ordering)
- Legacy industrial potentiometer applications requiring 500Ω, 150W capability
Works With
- Standard AC/DC power supply circuits up to 1.5 kV peak
- Industrial control relay and contactor circuits
- Three-terminal potentiometer circuit topologies (wiper, top terminal, bottom terminal)














