Smart Electric L140-20F Disc Limit Switch

Product Description

The SMART ELECTRIC L140-20F is a disc limit switch designed for use in heating and HVAC control circuits. Disc limit switches serve as safety or operating controls that open or close a circuit when a temperature or mechanical threshold is reached. The L140-20F is a single-unit component intended for installation by licensed HVAC technicians or qualified service professionals working on residential or light commercial heating equipment. Its disc-style design provides reliable switching action suited to the demands of field service and OEM replacement applications.

Disc limit switches are commonly found in gas furnaces, heat exchangers, and air handlers where they monitor operating conditions and interrupt or complete circuits as needed. The L140-20F is sold as a single unit, making it appropriate for direct one-for-one replacement during routine service calls or equipment repair. Technicians encountering a failed or tripped limit switch during diagnostics will find this component a straightforward field replacement.

Key Features

• Disc limit switch design for reliable circuit control in heating applications
• Single-unit sale for direct replacement service
• Compact disc-style form factor suited to standard furnace and air handler mounting locations

Compatibility

Designed as an OEM-style replacement disc limit switch for residential and light commercial heating and HVAC equipment.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect all power to the unit before removing or installing any limit switch. Verify the replacement switch matches the original component specifications before installation. Work should comply with applicable local codes and equipment manufacturer guidelines.