3/4″ Epoxy Sealed Snap Disc Thermostats
Senasys manufactures 3/4″ Epoxy Sealed Snap Disc Thermostats, like the 2570 series, is a unique thermostat switch designed for extended use in extreme environments. It is built using our patented metal sleeve rivet construction and sealed to protect against salt spray, water, moisture and heat.
Designed & manufactured to meet requirements of original equipment manufacturers worldwide.
Senasys products are 100% tested before they leave our facilities.
All of our snap disc units are UL approved (USR) and the 2511 family is also Canadian Standard approved (CNR).
made in u.s.a.
Designed & manufactured in Eau Claire, WI, U.S.A.
The 2570 series is a unique thermostat switch designed for extended use in extreme environments. It is built using our patented metal sleeve rivet construction and sealed to protect against moisture and heat. These sealed thermostats are highly versatile, carrying up to 15 Amps at 120VAC. The 3/4″ bi-metal thermodisc within is set to a precise temperature range between -21°-220°F (-29°-105°C). The temperature range determines when the thermal switch will close, or engage the electrical circuit, and when it will automatically reset, or open.
The 2570 Series 3/4″ Epoxy Sealed Snap Disc Thermostats are manufactured with a high temperature ceramic insulated base encased in a protective nylon boot. Devices are sealed, have a comparative tracking index of +600 per UL 746A and IEC 112; water absorption of 0% and exceptional heat resistance.
2570 Series Sealed Thermostats feature a patented metal sleeve rivet construction listed by many European approval agencies with 4mm over surface clearance current carrying parts to ground. The 3/4″ thermal element of the device with its fast response and sensitivity characteristics is processed to maintain close tolerances and narrow differential performance for extended life.
- 3/4″ Bi-Metal Disc
- Sealed thermostats meet MIL-STD-202 specification for humidity, moisture resistance, salt spray, freeze and thaw, and shock and vibration.
- High environmental exposure temperature range of -21°-220°F (-29°-105°C).
- Differential temperature range of 15-80°F (-9 – 25°C).
- Automatic Reset
- Single-pole, single-throw (SPST)
- 15 Amps at 120VAC, 100,000+ cycle life
- Variety of mounting brackets, including pipe mounts.
- Variety of wire lead options available, standard: 18AWG – 12″ or 72″, covered with 1/32″ or 1/16″ thick 100°C plastic insulation. Other custom wire leads, such as gauge, color, length, & connectors available. Contact us for more information.
- UL Approved
- Made in USA
For a more economical solution, Senasys has built relationships with overseas suppliers to provide our customers thermostats at a lower cost, with the same high quality as our snap disc thermostats built in the U.S.A.
Select from a variety of mounting options below.
Standard Cap w/ U-Clip
Flush Mount, Large Flange Bracket
Flush Mount, Notched Bracket
.375″ Diameter Pipe Mount Cap
.625″ Diameter Pipe Mount Cap
.500″ Diameter Pipe Mount Cap
0.75″ Diameter Pipe Mount Cap
.875″ Diameter Pipe Mount Cap
1″ Diameter Pipe Mount Cap
Standard Temperature Options
Below is a list of our common, off the shelf, bi-metal temperature options. Custom temperature options available. Please contact us.
Close 15°F, Open 5°F (±3°F)
Close by 35ºF max, Open by 25ºF min
Close 45ºF, Open 34ºF (±5°F)
Close 50°F, Open 40°F (±5°F)
Close 65ºF, Open 40ºF (±5°F)
Close 70ºF, Open 60ºF (±5°F)
Close 80ºF, Open 65ºF (±5°F)
Close 90°F, Open 80ºF (±5°F)
Close by 100ºF max, Open by 85ºF min
Close 110ºF, Open 95ºF (±5°F)
Close 120ºF, Open 105ºF (±5°F)
Close 130ºF, Open 115ºF (±5°F)
Close 140ºF, Open 110ºF (±5°F)
Close 150ºF, Open 135ºF (±5°F)
Close 170°F, Open 155 (±5°F)
Close 180ºF, Open 165ºF (±5°F)
Close 200°F, Open 185ºF (±5°F)
Open 15°F, Close 5°F (±5°F)
Open by 30ºF max, Close by 20ºF min
Open by 40ºF max, Close by 30ºF min
Open by 45ºF max, Close by 35ºF min
Open at 50ºF ±5°F, Close at 40ºF ±5°F
Open 60ºF, Close 50ºF (±5°F)
Open 70ºF, Close 60ºF (±5°F)
Open 95°F, Close 85°F (±5°F)
Open 100ºF, Close 85ºF (±5°F)
Open 110°F, Close 100°F (±5°F)
Open 120°F, Close 110°F (±5°F)
Open 130°F, Close 120°F (±5°F)
Open 140ºF, Close 125ºF (±5°F)
Open 150°F, Close 140°F (±5°F)
Open 160°F, Close 150°F (±5°F)
Open 170°F, Close 160°F (±5°F)
Open 180°F, Close 170°F (±5°F)
Open 190°F, Close 180° (±5°F)
Open 200ºF, Close 185ºF (±5°F)
Open 220ºF, Close 205ºF (±5°F)
Our 3/4″ epoxy sealed snap disc thermostats are found in a variety of applications. Choose a category below to learn more.
Frequently Asked Questions
YOUR QUESTIONS, ANSWERED.
For small quantities, we can build anything from -20°F to 220°F. Contact us for higher temperatures.
Our standard wire leads are black, 18 AWG at 12″ or 72″ length. We recommend the 72″ length, and then cutting down to what you need. We have other options available including color, lengths and gauge sizes. Click here to learn more.
Senasys manufacturers two different lines of sealed thermal switches, 431 series and 2570 series, which are UL873 approved to be hermetically sealed. Our sealed snap disc thermal switches are commonly found in environments where condensation, dust or other material may be present.
Senasys performed a series of tests with our sealed thermostat switches by submerging them into fresh water and salt water. Click here to see the results!
We are certain of our position at the top so we’re comparing our product with other top products in the marketplace today.
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3/4″ Bi-Metal Disc
-20°F to 220°F
Single Pole, Single Throw
15 Amps @ 120VAC
Variety of Mounting Options – Pipe & Surface
Variety of Wire Options
Made in U.S.A.
Build A Thermostat
Follow the below nomenclature guide to determine the 3/4″ epoxy sealed thermostat to meet your application requirements.
Request A Quote
Complete the form below with your application information, and a product specialist with follow up with you in 1-2 business days.