Supco SLS140 Automatic Reset Limit Switch Rollout Control

The Supco SLS140 is a 1/2-inch bimetal automatic reset limit switch designed for furnace and heating system safety applications. This snap disc thermostat provides reliable over-temperature protection with automatic reset functionality, eliminating the need for manual intervention after a temperature event.

Key Specifications:

• Cut-Out Temperature: 140°F (opens on temperature rise)
• Cut-In Temperature: 100°F (closes when cooled)
• Temperature Differential: 40°F
• Switch Configuration: SPST (Single Pole Single Throw), open on rise
• Contact Rating: 1.5 Full Load Amps, 10 Resistive Amps at 240 VAC
• Terminal Type: 45° angle 1/4-inch quick connect terminals
• Certifications: UL recognized and CSA approved

Features and Benefits:

• Bimetal snap disc construction provides proven reliability and fast response
• Automatic reset design restores operation when temperature returns to safe levels
• Compact 1/2-inch disc design for versatile mounting in tight spaces
• Suitable for furnace rollout protection and general heating limit control applications
• Cost-effective safety solution for residential and light commercial HVAC systems

The SLS series from Supco offers a broad temperature range to cover most heating applications. This switch is commonly used as a rollout limit switch in gas furnaces to detect dangerous flue gas spillage, as well as general over-temperature protection in warm air heating systems.