Senasys snap disc thermostats meet UL 353 and UL 873 standards. These certifications are critical for engineers designing food equipment and HVAC systems. If your application requires UL snap disc thermostats that are reliable and fully tested, contact us to specify a part.
Overview of Senasys Snap Disc Thermostats
Senasys manufactures mechanical snap disc thermostats that comply with UL 353 and UL 873. These UL rated snap disc thermostats are temperature-sensitive switches that open or close a circuit at a specific setpoint. Features include:
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UL 353 certification for limit controls and safety interlocks
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UL 873 certification for HVAC, cooking, refrigeration, and humidity control
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100% mechanical and thermal inspection for consistent performance
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Why UL Rated Snap Disc Thermostats Matter
UL 353 and UL 873 are safety and performance standards required in many food and HVAC systems. Using UL snap disc thermostats ensures:
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Compliance with industry regulations
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Confidence in product safety and reliability
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Compatibility with third-party certifications and audits
UL 353 and UL 873 Testing Requirements
Both standards require rigorous evaluation. UL tests snap disc switches for:
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Contact resistance and insulation strength
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Mechanical endurance and actuation precision
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Resistance to flame and environmental stress
Only switches tested and listed by UL can be legally marked as UL-certified. Manufacturers cannot self-certify.
Benefits of Senasys Mechanical Snap Discs
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No software needed: simple thermal-mechanical operation
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Consistent performance: factory-inspected for thermal accuracy
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Straightforward installation: mount at the sensing point and wire in series
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Versatile use: fits OEM requirements in heating, cooling, and food systems
Installation Instructions
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Identify the correct mounting location for temperature sensing
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Wire the switch in series with the device being controlled
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Secure all terminals to avoid arcing or failure
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Confirm temperature actuation with system testing
Troubleshooting Snap Disc Thermostats
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Loose terminals: tighten all connections
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Incorrect actuation: verify mounting location and system temperature
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Visual defects: inspect for signs of overheating or corrosion
UL Compliance Considerations
Use only UL snap disc thermostats listed by UL. This ensures full regulatory compliance and consistent safety results. Maintain documentation for audits and inspections.
Further information:
UL rated snap disc thermostats from Senasys meet strict testing and listing requirements for use in regulated OEM environments. With no programming needed and full mechanical reliability, these switches are ideal for critical temperature control. Contact Senasys today to specify your UL-certified solution.
