Description
Modine 3H0400780001 L165-40F High Limit Switch Overview
The Modine 3H0400780001 is a genuine OEM high limit switch designed as a direct replacement for compatible Modine heating equipment. Identified by its L165-40F designation, this safety control is engineered to monitor supply-air or heat exchanger temperatures and interrupt the heating circuit when unsafe temperature thresholds are reached, protecting both the equipment and the building occupants.
How It Works
The high limit switch continuously senses operating temperatures within the unit. When temperatures rise to the 165°F setpoint, the switch opens the control circuit, shutting down the heat source to prevent overheating. Once temperatures drop by approximately 40°F (the differential), the switch resets and restores normal operation — providing reliable, automatic protection without manual intervention.
Key Features
- Genuine Modine OEM replacement part — ensures proper fit and function
- L165-40F designation: 165°F trip setpoint with 40°F reset differential
- Automatic reset operation for continuous equipment protection
- Designed for use in Modine unit heaters and heating equipment
- Interrupts heating circuit upon over-temperature condition to prevent equipment damage
- Durable construction built to withstand demanding commercial and industrial heating environments
Application
- Compatible with select Modine unit heaters and warm air heating products
- Ideal for commercial, industrial, and institutional heating applications
- Suitable for replacement in gas-fired and hydronic Modine heating units
Why Choose Genuine Modine OEM Parts?
Using genuine Modine OEM replacement components ensures your equipment operates within factory-specified safety parameters. Aftermarket substitutes may not meet the original design tolerances, potentially voiding warranties or compromising safety. The Modine 3H0400780001 is the correct, manufacturer-approved solution for restoring safe, reliable operation to your Modine heating system.
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