The 431-301AA 1/2″ Epoxy Sealed Thermostat Switch is used whenever a moisture or dustproof enclosure is required for safe, sensitive and reliable operation. A polypropylene boot enclosure filled with epoxy resin covers the thermostat. The bi-metal disc control element is in close proximity to the sensor cap to provide rapid response to temperature changes.
Since the bi-metal disc used in the Type 431 thermostat is thermally and electrically insulated the bi-metal disc reacts only to the temperature of the controlled device or medium surrounding the disc. Instantaneous, positive action of the disc prolongs thermostat life by minimizing arcing and eliminates chattering, false cycling and electrical interference with radio and television reception. Long life is assured with wiping contacts.
The temperature range determines when the thermal switch will close, or engage the electrical circuit, and when it will automatically reset, or open. A specific temperature range may be designed according to your application needs, or choose from our standard ranges.
The 1/2” Thermostat meets UL Standards 873 and 353 and is available in a single-pole, single-throw device. Temperature calibrations are preset, and all units are subject to 100% mechanical and thermal inspection.
Senasys’ 431-301AA 1/2″ epoxy sealed thermostat switch are designed for extended use in extreme environments , built using our patented metal sleeve rivet construction and sealed to protect against salt spray, water, moisture and heat.
Senasys 1/2″ Snap Disc Thermostats are quality-engineered thermal sensors specifically designed for a variety of major appliances, including clothes dryers, hot liquid and food-dispensing machines, room unit and space heaters, air conditioning systems, copy machines, engine heaters, and wood stoves.
- Open on Temperature Rise
- Pipe mount. Other options available, contact us.
- Epoxy Sealed for Extreme Environments
- 12″ or 72″ 18AWG Wire leads. Other options available, contact us.
- Temperature range of 20°F to 350°F
- Automatic Reset
- Single pole, single throw (SPST)
- Up to 15 Amps @ 120 VAC
- UL/cUL rated for 100,000 cycles
- Operates with AC or DC
- Made in the USA
Our 3/16″ to 5/8″ pipe mounts are available in aluminum only and the 7/8″ and 1-1/8″ are brass only. If you would like a specific material, special orders are quantity based and have a longer lead time. For more information on determining your pipe mount size, click here!
Note: All sealed units take three days to build and cure.
For more information and product specifications, please view our catalog.
Senasys offers a variety of custom options such as terminals, temperature ranges and more. Please contact our direct customer service for more information.