• Model AA2

Model AA2

Creep action thermostat with highest contact rating in the A Series. Available with or without gold diffused contacts. Multiple application uses.
Model : Model AA2

A creep-action thermostat/thermal protector with highest contact rating of all Model A Series thermostats.  Available with gold diffused contacts (A2, AA2) for use in low voltage/low current applications, or with fine silver contacts (-A2, -AA2) for 120 VAC applications.  Also available with normally open contacts (A2R, AA2R)


Contact Ratings

  • 5 amps 120 VAC resistive
  • 5 amps 120 VAC inductive
  • 6 amps 12 VDC resistive

 

Calibration Range

Available with nominal calibration temperatures from 5°C to 200°C.

 

Standard Marking System

UL Recognitions

CSA Certifications


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  • Conductive bimetal construction; the bimetallic element carries the circuit current.
  • Creep action device; slow make/slow break switching action.
  • No built-in differential between the opening and closing temperature.
  • Case electrically alive; insulating sleeving is available. Preset calibration temperature; not adjustable in the field.
  • Available to open circuit on rise of temperature (normally closed), Models A2 and AA2, or close circuit on rise of temperature (normally open), Models A2 and AA2.
  • Available with gold diffused, fine silver contacts for use in low voltage/low current applications.
  • Available with same end termination, Models A2 and A2; or opposite end termination, Models AA2 and AA2.
  • Available with factory applied lead wires. Models -A2 and -AA2 are without gold diffused contacts.




  1. Appliance Applications

Many of our thermostats are used in what we consider as “small” or personal care appliance applications. Models listed under this section have maximum contact ratings of up to 20 amps/120 volts AC and 10 amps/240 AC. All current loads are resistive.


Battery Pack Applications

This application group refers to rechargeable battery packs for all portable power applications. The thermal controls for this group either controls the charge rate of the battery packs or limits the current under short circuit conditions.

 

Medical Equipment Applications

This application group refers to rechargeable battery packs for all portable power applications. The thermal controls for this group either controls the charge rate of the battery packs or limits the current under short circuit conditions.

 

Motor Applications

This category covers the use of our thermal controls in all types of motor applications. Our devices are used in AC and DC motors that range from sub-fractional HP and above.

 

Lighting Applications

This category covers use of our thermal controls in all type of lighting applications. This includes ballasts, recessed lights, and transformers used in all types of lighting.

 

Temperature Sensor Applications

This category covers a wide variety of applications. Our controls are used to either monitor the temperature of a device, regulate the temperature of a device, or limit the temperature of a device. The thermal control usually does not carry the full current load in these applications.

 

Heater Applications

This group includes applications such as cartridge heaters, disc-type heaters, foil and silicone heaters. These are generally OEM products that are part of the “Bigger Picture,” rather than stand-alone items.

 

Heating Pads and Blankets

We define this application group as end products that the primary design function is to provide generation of heat for comfort purposes. Heating Pads and Blankets fall into this category. Our thermal controls are used to limit or regulate the temperature of these applications.

 

Electronics Applications

This category consists of variety of applications. Most of our thermal controls used in these applications protect an overheat condition of a circuit board.

 

Transportation Applications

The thermal controls used for this application group consist of use of our products by automotive manufacturers, their subcontractors, or in aftermarket applications designed for use in motor vehicles.

 

Transformer Applications

Thermal controls in this category are used for the protection of the primary or secondary of a transformer coil or power supply. These controls normally operate on a combination of the increase in temperature and current in the application.

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