Snap Acting & Open Air Thermostats

Open Air Thermostats sense heat through convection rather than conduction.

Snap Disc Thermostats utilize a bimetallic, temperature-sensitive disc that snaps open/close switch contacts disrupting/re-estabishing continunity.

 

Snap Disc:
Technical Drawing (PDF) - Horizontial Tabs
Technical Drawing (PDF) - Verticle Tabs

Open Air:
Technical Drawing (PDF)


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General Information

Open Air Thermostats are classified as our A-5011 series units and they are as versitile as our B200 closed body conduction type thermostats. The only difference between the conduction type and the open air type is the way they sense thermal energy. Open air thermostats sense temperature through convection rather than conduction.

Snap Disc Thermostats are classified as our A-5000 series; spanning from 5001 through 5008. Each part number in the series represents a different thermal shut off temperature. The A-5000 units feature a bimetallic, temperature-sensitive disc that snaps open/close switch contacts disrupting/re-estabishing continunity.

Snap Disc Thermostat specifications

Rated Voltate: 120V 50/60Hz
Contact Resistance <50mΩ
Rated Current: 16A
Heat Resistance 392F/200C
Electrical Strength: 2500V AC for 1 second of time, no breakdown and now flash over

Open Air Thermostat Specifications

Rated Voltage: 120V AC 50/60Hz, Rated Current @ 120V AC = 15A
Rated Voltage: 250V AC 50/60Hz, Rated Current @ 250V AC = 10A

Engineering Assistance

If you are unsure of what you need simply let our team of engineers work with you to solve your problems. Prior to any commitment we can provide samples for you to evaluate and qualify, giving you the confidence needed to move forward with your project.

Quotes

When requesting a quote simply let us know how you want your thermal actuators to function based on the three performance ranges listed on the left and our engineers will guide you the rest of the way.

 

 


Classification & Anatomy

Open air thermostats sense thermal properties through convection means, there is no outer body; all of the internals are exposed. Snap disc thermostats quickly snap open / close to connect / disconnect an electrical circuit. We offer one style of open-air and two styles of snap discs, please review the PDF documents linked below for dimensional and electrical data.

Open Air Thermostat Snap Disc - 5000 Series (Even P#s) Snap Disc - 5000 Series (Odd P#s)

Technical Drawing: Click Here To View (PDF)

Selectable Temp Range: Room Temp to 550F (288C)
Adjustable shaft lengths .687" to 3.25"

Technical Drawing: Click Here To View (PDF)

A-5002 124.8F / 51.6C
A-5004 168.8F / 96.0C
A-5006 300 F / 149.0C
A-5008 375 F / 191.0C

Technical Drawing: Click Here To View (PDF)

A-5001 124.8F / 51.6C
A-5003 168.8F / 96.0C
A-5005 300 F / 149.0C
A-5007 375 F / 191.0C