SRL135 Manual Reset Limit Switch Oem Replacement

Product Description

The SRL135 is a manual reset limit switch designed for residential and light commercial heating applications. Limit switches serve as a thermal safety device within a furnace or air handler, interrupting the control circuit when a preset temperature threshold is exceeded. This prevents heat exchanger overheating and protects downstream components. Once the over-temperature condition is resolved, the switch must be manually reset before the system will resume normal operation. The SRL135 is intended as an OEM-quality replacement, manufactured to meet original factory specifications for fit and function. Licensed HVAC technicians are the typical installing trade for this component.

This limit switch is suited for heating systems where a manual reset thermal cutout is required as a safety interlock. It is commonly found in gas furnaces, electric furnaces, and fan-coil heating sections where automatic reset would present a safety risk. The manual reset design ensures a technician must physically inspect and clear the fault condition before the appliance returns to service, making it appropriate for high-limit applications where unattended restart is not acceptable.

Key Features

• Manual reset operation requires technician intervention before restart, reducing risk of repeated over-temperature cycling
• OEM-quality construction designed to meet original factory fit and performance standards
• Serves as a direct replacement to restore heating system safety function
• Built for durability under the thermal and vibration conditions typical of heating appliances
• Straightforward swap-out installation compatible with standard HVAC service workflow

Compatibility

Designed as an OEM-style replacement manual reset limit switch for residential and light commercial heating applications.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut off all power to the furnace or air handler at the disconnect and confirm the system is de-energized before removing the existing limit switch. Verify that the root cause of the over-temperature condition - such as a blocked filter, failed blower motor, or restricted duct - has been diagnosed and corrected before resetting and returning the system to service. Work should conform to applicable local mechanical codes and the equipment manufacturer's service documentation.