Description
The Markel Products Co. 41041-003 is an auto reset limit control engineered specifically for duct heater applications. Designated L170-50F, this limit switch provides reliable overheat protection by opening the circuit when duct temperatures reach the rated set point and automatically resetting once temperatures return to a safe operating range — eliminating the need for manual intervention and minimizing system downtime.
Key Features
- Auto reset operation — automatically restores circuit continuity once temperature drops to safe levels
- L170-50F designation: 170°F open set point with 50°F differential (resets at approximately 120°F)
- Designed for duct heater overheat protection and high-limit safety cutout
- Provides a critical layer of protection against overheating in forced-air duct heating systems
- OEM-quality replacement component from Markel Products Co.
- Compact, durable construction suited for commercial and residential duct heater installations
Application
The 41041-003 limit control is a direct replacement safety component for Markel duct heaters. It monitors supply air temperature within the duct and interrupts heater operation if temperatures exceed the rated threshold, protecting the heater elements, ductwork, and connected equipment from thermal damage. The auto reset function restores normal operation automatically once safe temperatures are re-established, making it ideal for installations where manual reset access may be limited.
Specifications
- SKU: 41041-003
- Type: Auto Reset Limit Control
- Designation: L170-50F
- Open Set Point: 170°F
- Differential: 50°F (Reset at approximately 120°F)
- Reset Type: Automatic
- Application: Duct Heater
- Brand: Markel Products Co.
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