
PRL300 Comparison
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![]() | $7.10 | Condition is New, Senasys 404-131 Manual-Reset High-Limit Thermostat L300 8627 F Snap-Disc NOS, FREE SHIPPING | ![]() |

The Senasys PRL300 404-131 is a manual-reset high-limit thermostat designed for use with L300 8627 snap-disc heating elements. This thermostat is an essential component in maintaining the safe operation of your heating system by preventing overheating.
The PRL300 404-131 is a high-quality thermostat that offers reliable temperature control. It is designed with a manual-reset feature, which allows for easy resetting after a trip or when the temperature limit has been exceeded. This feature ensures that your heating system does not continuously cycle on and off, helping to prolong the life of the heating element and save energy.
The thermostat housing is made of durable materials, designed to withstand the rigors of continuous use in a heating environment. The snap-disc design allows for quick and easy installation, making it a popular choice for commercial and industrial applications where time and efficiency are critical.
The high-limit temperature setting on the PRL300 404-131 is adjustable, allowing you to customize the temperature control to suit your specific application. The thermostat also features a large, easy-to-read dial, which displays the current temperature setting and allows for easy adjustments.
The Senasys PRL300 404-131 is a versatile and reliable thermostat that is suitable for use in a wide range of applications, including water heating, steam generation, and process heating. It is designed to provide accurate and consistent temperature control, ensuring that your heating system operates safely and efficiently.
The thermostat comes with a comprehensive manual that provides detailed instructions on installation, operation, and maintenance. The manual also includes troubleshooting guidelines to help you diagnose and resolve any issues that may arise.
In summary, the Senasys PRL300 404-131 is a high-performance, manually-resettable high-limit thermostat designed for use with L300 8627 snap-disc heating elements. It offers reliable temperature control, easy installation, and adjustable temperature settings, making it an excellent choice for commercial and industrial heating applications.
A Detailed Analysis of Senasys PRL300 404-131 Manual-Reset High-Limit Thermostat
Introduction:The Senasys PRL300 404-131 is a manual-reset high-limit thermostat designed for L300 applications, specifically those utilizing snap-disc sensors. This analysis aims to provide an unbiased assessment of its pros and cons to help potential buyers make an informed decision.
Pros:1. Manual Reset: The manual-reset feature ensures that users can manually restart the heating system after a high-temperature trip, which can help prevent nuisance trips and save energy.
2. High-Limit Protection: The thermostat provides over-temperature protection, ensuring the safety of the heating system and preventing potential damage caused by excessive temperatures.
3. Snap-Disc Sensors Compatibility: The Senasys PRL300 404-131 is designed to work with snap-disc sensors, making it a suitable option for those using this type of sensor in their heating applications.
Cons:1. Manual Reset: While the manual reset feature can be advantageous, it may also be a disadvantage for some users, as it requires them to physically reset the thermostat whenever a high-temperature trip occurs, instead of having an automatic reset feature.
2. Limited Compatibility: This thermostat is specifically designed for L300 applications with snap-disc sensors, which may limit its appeal to users with different heating systems or sensor types.
3. No Display: The Senasys PRL300 404-131 does not have a display, which may make it difficult for users to monitor the temperature or status of the heating system without additional tools or equipment.
Conclusion:The Senasys PRL300 404-131 manual-reset high-limit thermostat offers valuable benefits such as high-limit protection and compatibility with snap-disc sensors. However, its lack of a display and manual reset feature may be a drawback for some users. Ultimately, the decision to purchase this thermostat depends on the specific requirements and preferences of the user.
Recommendation:If you are looking for a high-limit thermostat for an L300 heating system with snap-disc sensors and are not concerned about the manual reset feature, the Senasys PRL300 404-131 could be a suitable option for you. However, if you prefer an automatic reset feature or a display, it may be worth exploring alternative thermostat models.
Details:
Buying multiples. Many appliances use two primary roll out or keep a spare in the truck. Automatic cart discounts: 10 % off 5 PCs 20 ships together. Trip-free design prevents auto-reset after over-heat, forcing inspection.
Senasys 404-131 manual-reset high-limit thermostat l300 8627 f snap-disc nos condition new-old-stock from spare-parts inventory. No corrosion beyond a little shelf tarnish on terminals. Still sealed on factory trays see last photo ; individual units bagged at ship time. Manual reset high limit switch l300 thermostat 404-131 snap disc safety furnace boiler heater part pellet stove Senasys PRL300 York 026-34027-000 made in USA nos hvac.
Why techs use manual-reset limits meets code for primary high limit on many furnaces, unit heaters, pellet/wood stoves, boilers dryers.
specifications centrafurn:
- brand: Senasys
- mpn: Prl300
- part type: Disc Manual Thermostat
- switch type limit switch: Material Phosphor Bronze
- items included: Thermostat
- contact type: Mechanical
- mounting type: Surface Mount
- terminal: Un Sure Screw
- operation mode: Manual
- heating system: Furnace
- contact material: Phosphor Bronze
- circuit type: 1-way
- upper temperature rating: 3e 2 Degrees Fahrenheit
- upc: 313030064028
seller centrafurn:
- # reviews: 2272
- rating: 100.0%
- city: hartland, wisconsin
returns centrafurn:
- method: money back
- policy: returns accepted
- time: 30 days
- paid by: buyer
general centrafurn:
- category: Home & Garden > Heating, Air > Cooling Systems > Central Furnaces
payments centrafurn:
- wallet: apple-pay
- other
- credit card: mastercard
shipping centrafurn:
- type: fixed
- class: standard
- carrier: usps
- service: usps ground advantage
- transit: 3-8 days
offer centrafurn:
- options: ship-to-home
- availability: in stock
- started: june 10, 2025
- sold #: 16
- price: $7.10
- item condition: New

