Supco SLS170 Automatic Rollout Limit Switch 170F-130F

The Supco SLS170 is an automatic reset rollout limit switch designed to provide reliable overtemperature protection for gas-fired furnaces, unit heaters, and rooftop HVAC units. This safety control opens at 170°F and closes at 130°F, offering a 40°F differential for precise temperature monitoring.

Key Features:

• 1/2 inch bimetal temperature control in a compact, versatile, cost-effective design
• 1/2 inch diameter snapdisc with 1/4 inch connections
• Automatic reset functionality - no manual intervention required
• 45° angle 1/4 inch terminals for easy installation
• CSA approved and UL recognized for safety compliance
• SPST (Single Pole Single Throw) switch configuration
• Contact rating: 1.5 F.L. Amp, 10 Resistive Amp at 240 VAC

The SLS170 monitors temperatures in the draft exhaust or around the combustion chamber, automatically shutting down furnace operation when excessive temperatures are detected. Once the temperature drops back to the reset point, the switch automatically closes to restore normal operation. This bimetallic sensor is housed in a durable casing designed for long-term reliability in heating applications with ambient temperatures up to 350°F.