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20/80F X-PRF SPDT, COILED-BULB Utility Thermostat for Farm, Industrial and Commercial Use

Price: $429.98
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(See Product Details Below for Manufacturers Part Numbers)
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Manufacturer: Johnson Controls

Description: 20/80F X-PRF SPDT, COILED-BULB

Category: Temperature Controls

Sub Category: Snap-Acting Controls

A19 Series Utility Thermostats for Farm,
Industrial and Commercial Use


These temperature controls are designed to cover a

broad range of uses for heating and general purpose

requirements. See “Application” column,

“Specifications” Page 2, for typical uses. Controls

have SPST contacts which open on temperature

increase or they may be supplied in single-pole,

double-throw contact action.

Various control ranges are available to cover working

temperatures from -30 to 550° F (-34 to 288° C).

Closed tank fittings and bulb wells are available for

immersion applications.

These controls are designed for open low and open

high applications. Where critical or high value

products are to be maintained within a specific

temperature differential, a single control should not

be applied to function as both an open low and open

high control. In these applications, a separate backup

control with alarm contacts should be wired to

indicate when the back-up control operates.


· Dependability -- precision snap-acting dusttight

· Dependability -- low volume, responsive liquid
filled sensing elements.

· Wide choice of temperature control functions with
a minimum number of models.

· Precision “repeat” accuracy which is unaffected by
barometric pressure and cross ambient problems.

· Special close differential models available.

General Description

The Series A19 is a small, compact control with

adjustable or fixed differential. Controls supplied with

adjustable differential have an internal scale plate

indicating increments of differential. The controls are

supplied with adjusting lever at minimum differential

stamped on the control. To adjust move the lever to

the differential required. Models are available with or

without external range adjustment and visible scale.

External range adjustment may be by screwdriver slot

or range adjusting knob

Replaces Part Numbers: A19BUC-2, CARA19BUC-2

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