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3- or 4- Stage Thermostats

Models are available in ‘open’ construction for panel mounting. Single knob adjustment moves the entire staging band up and down within the range of the control. The differential on each stage and sequencing between stages are factory set.

This permits the OEM to completely engineer the cycling of their equipment without the hazard of field mis-adjustments and erratic sequencing.


  • Dust-tight SPDT switches
  • Cushion mounted
  • Operation from a single, liquid filled element
  • Case compensation standard on all models


Designed for multi-stage thermostatic operation of electrically controlled equipment such as:

  • heat pumps
  • packaged liquid chillers
  • electric duct heaters
  • computer room airconditioners

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A36 - 3- or 4- Stage Thermostats

Dimensions in mm