Description
The Supco SHL507 is a board-mounted, general-purpose temperature limit switch engineered for reliable overheat protection in HVAC and appliance control applications. Featuring fixed open and close temperature setpoints with automatic reset functionality, this switch provides dependable, hands-free protection without requiring manual intervention after a temperature fault clears.
How It Works
The SHL507 monitors air or surface temperatures through its 3.12″ insertion length sensing element. When the sensed temperature rises to the fixed open setpoint of 140°F, the SPST normally closed (NC) switch opens, interrupting the control circuit and protecting downstream components. Once temperatures fall back to the fixed close setpoint of 110°F, the switch automatically resets — restoring normal operation without technician intervention.
Key Features
- Fixed Open Temperature: 140°F — opens circuit on high-temperature fault
- Fixed Close Temperature: 110°F — auto-resets when temperature drops
- Switch Type: SPST (Single Pole, Single Throw), Normally Closed
- Auto Reset operation — no manual reset required
- 3.12″ insertion length for accurate temperature sensing
- Board-mounted design for compact, direct-board installation
- General-purpose limit switch suitable for a wide range of HVAC and appliance control applications
Application
The SHL507 is ideal for use as a high-limit safety control in furnaces, air handlers, heat pumps, and other HVAC equipment where automatic overheat protection is required. Its board-mounted form factor makes it a convenient drop-in solution for OEM and replacement applications.
Product Specifications
- Brand: Supco
- SKU / Part Number: SHL507
- Open Temperature: 140°F (Fixed)
- Close Temperature: 110°F (Fixed)
- Switch Configuration: SPST, Normally Closed
- Reset Type: Automatic (Auto Reset)
- Insertion Length: 3.12″
- Mounting: Board Mounted
- Application: General Purpose Limit Switch / Temperature Control







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