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Controllers


A19 Remote Bulb Control Series Image
  • Constant Differential throughout the Entire Range
  • Unaffected by Cross-Ambient Conditions
  • Fixed or Adjustable Differential Available
  • Variety of Sensing Element Styles
  • Wide Temperature Ranges Available
  • Compact Enclosure
The A19 Series Controls are single-stage temperature controls that incorporate environmentally friendly liquid-filled sensing elements.
A19 Thermostat for Hazardous Locations Series Image
  • Precision Enclosed Switch and a Liquid-Filled Sensing Element Provides Repeat Accuracy That Is Unaffected by Barometric Pressure and Cross-Ambient Temperature Fluctuations
  • Single-Pole, Double-Throw (SPDT) Switch Provides Open High or Close High Action for Heating or Cooling
  • Electrical Rating Permits Direct Control of Most Equipment
The A19 Series Thermostat provides remote bulb or coiled bulb sensing for hazardous environments. These thermostats are designed for use in grain elevators, chemical and powder plants, mines, oil refineries, and similar sites. For use in Class I, Group D and Class II, Groups E, F, and G hazardous locations.
T675AB Series Image
  • Suitable For Applications Requiring Temperature Control of Air or Liquids Where Controller Must Be Placed Outside the Sensing Area
  • Fast Response Models (Available For Use in Return Air Duct) Operate Approximately Four Times Faster Than Standard Models
  • Typical Uses Include Control of Dampers and Valves in Heating, Cooling and Heating-Cooling Systems
  • Ambient Temperature Compensation Provides Good Temperature Control
  • T678 Models Have a Maximum Connected Load of 2000 VA
  • Controller Can Be Mounted In Any Position
Remote bulb thermostats regulate temperature of air or liquids in ducts, pipes, tanks and boilers.
  • Refer to T775 Electronic Remote Temperature Controller Where More Exact Control Is Required and/or Remote Controller Location Is Preferred
T678A Series Image
  • Suitable For Applications Requiring Temperature Control of Air or Liquids Where Controller Must Be Placed Outside the Sensing Area
  • Fast Response Models (Available For Use in Return Air Duct) Operate Approximately Four Times Faster Than Standard Models
  • Typical Uses Include Control of Dampers and Valves in Heating, Cooling and Heating-Cooling Systems
  • Ambient Temperature Compensation Provides Good Temperature Control
  • T678 Models Have a Maximum Connected Load of 2000 VA
  • Controller Can Be Mounted In Any Position
Remote bulb thermostats regulate temperature of air or liquids in ducts, pipes, tanks and boilers.
  • Refer to T775 Electronic Remote Temperature Controller Where More Exact Control Is Required and/or Remote Controller Location Is Preferred
FS Series Image
The FS Series are low limit controllers, also known as "Freeze Stats". These devices were designed for use on HVAC equipment that requires low-temperature cutout protection to prevent cooling coils from freezing. They should be mounted between the heating and cooling coils on the supply side of the fan unit. They respond to the lowest temperature sensed along any 1 foot section of the sensing element. The FS Series has manual and automatic reset versions, as well as, models that feature one or two sets of SPDT contacts. Numerous capillary lengths are also available.
A72 Cooling Tower Control Series Image
  • Open High or Close High Models Are Available
The A72AE and A72CE are wide range temperature controls with heavy duty double-pole, single-throw (DPST) contacts and neoprene-coated sensing elements. Use for control of cooling tower fans; motorized valves or solenoid operated valves.
L480 Series Image
  • Applications Include Freezer Cabinets, Display Cases, Beverage Coolers, Milk Cooling Tanks and Air Conditioners
  • Can Act As A Frost Alarm Operator in Storehouses or Orchards Where Frost Would Damage Crops or Equipment
  • Dual Temperature Scale Plate Provided for both Fahrenheit and Celsius Readings
L480 Controllers are used to limit or control temperature in air conditioning systems or refrigerated enclosures.
A11 Low Temp Cutout Series Image
  • Precision Repeat Accuracy Remains Unaffected by Ambient Temperature at the Control Diaphragm Cup and 4 ft (1.2 M) Capillary (20 ft [6.1 M] Sensing Bulb Must Be in the Controlled Area)
  • Trip-Free Manual Reset Allows the Lever to Reset. You Must Press and Release the Lever Before Operation Resumes.
  • Precision Snap-Acting Contacts in a Dust Protected Enclosure Enables the A11 Control to Operate to the Fullest Potential
  • Direct Reading Scale Provides Easy-to-Adjust Setpoint. Adjustments Can Be Made from the Top or Bottom of the Control.
A11 Series Low Temperature Cutout Controls are available with single-pole, single-throw (SPST) or single-pole, double-throw (SPDT) contact action. Typical applications include the sensing of low temperature conditions to avoid over cooling or icing of hydronic coils, cooling coils, and liquid-handing pipes. The controls are compact and sturdy, and have an adjustable temperature setpoint range with a fixed differential. The range adjustment screw is accessible at the bottom of the control, and at the top of the control when the cover is removed.
The A11 Controls are compact and sturdy and feature an adjustable range with a fixed differential. The range adjustment screw is accessible at the bottom of the control or at the top, when the cover is removed. A factory-set low temperature stop is available when specified.
A28 Two Stage Duct Thermostat Series Image
  • Flat Flange Mounting with Special Coil Element Permits Positioning of Sensing Bulb in the Appropriate Portion of the Air Stream
  • Unaffected by Barometric Pressure or Cross Ambient Temperatures
  • Two Single-Pole, Double-Throw (SPDT) Snap-Acting Switches
The A28AK is a two-stage temperature control with special air coil sensing element and adjustable mounting flange. These duct thermostats are used on roof top units, make-up heaters, duct heaters, and air handling systems of all types.
T6054 Utility Line Voltage Thermostat Series Image
  • Fast Response, Tin-Plated Element Not Affected By Adverse Environment
  • Use in a Variety of Farm, Industrial or Commercial Applications
  • Mounts On Flat Surface with Three Screws
  • Wall or Duct Mount in Any Position
  • Rugged Case
The T6054 Utility Line Voltage Controller provides SPDT heavy-duty, line-voltage temperature control in ventilation, heating or cooling systems.
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