International Comfort Products 1320381 Limit Switch

Product Description

The INTERNATIONAL COMFORT PRODUCTS 1320381 is an OEM replacement limit switch and thermostat designed to protect HVAC equipment from overheating and thermal runaway. Rated at L150-40, this auto-reset device monitors heat exchanger and air handler temperatures, interrupting the circuit when temperatures exceed safe thresholds and automatically restoring operation once conditions normalize. Licensed HVAC technicians install this component during routine service, system diagnostics, or failure replacement to maintain safe, code-compliant operation in residential and light-commercial heating and cooling systems.

This limit switch is applicable to forced-air HVAC systems where thermal protection of the heat exchanger or air handler cabinet is required. It fits AMMK10AHA1, AMMK05AHB1, and AMMK05AHA1 units among others. The auto-reset function eliminates the need for manual intervention after a nuisance trip, making it appropriate for installations where intermittent high-temperature conditions are a service concern.

Key Features

• L150-40 rating for defined open and close temperature differential
• Auto-reset operation restores circuit automatically after cooldown
• Genuine OEM replacement part ensuring correct fit and calibration
• Compact form factor fits standard limit switch mounting locations
• Protects heat exchanger and system components from thermal damage

Compatibility

Confirmed compatible with AMMK10AHA1, AMMK05AHB1, and AMMK05AHA1 units. Consult the full model fitment list for additional compatible systems.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect all electrical power to the unit at the disconnect switch or breaker before removing the existing limit switch. Verify the replacement L150-40 designation matches the original component before installation. Follow applicable local mechanical and electrical codes during service.

Technical Specifications

• Switch Type: Limit Switch / Thermostat
• Reset Type: Auto Reset
• Rating: L150-40
• Length: 4.1 inches
• Width: 2.45 inches
• Height: 1.7 inches
• Weight: 0.03 pounds

Standard Information

• Brand: INTERNATIONAL COMFORT PRODUCTS
• Manufacturer Part Number: 1320381