Johnson Controls A28KA-1C Data Sheet

A28AKA Industrial Thermostat

Multi-Stage Electromechanical Temperature Controls

Code No. LIT-1927120

A28 Two-Stage Industrial Thermostat (Watertight and Dusttight)

Description

The A28KA is a wide range temperature
control with gasketed enclosure and two
single-pole, double-throw (SPDT) switches.

Refer to the A19A, A19K, A28K Series

Industrial Controls Remote Bulb Product

Bulletin (LIT-125105) for important product

application information

Features

• rugged steel enclosure

• liquid-filled sensing element that provides
uniform control

Applications

This control is for refrigeration, air
conditioning, and heating applications. This
model incorporates a gasketed enclosure that
can be used in a wide range of industrial and
general purpose applications.

Selection Chart

Product Code
Number

A28KA-1C Two-SPDT 0 to 150

Switch
Action

Range
°F (°C)

(-15 to 65)

Repair Information

If the A28 Two-Stage Industrial Thermostat fails
to operate within its specifications, replace the

unit. For a replacement thermostat, contact the

nearest Johnson

Controls®

representative.

Technical Specifications

Electrical Ratings

Motor Ratings AC 120 208 240

AC Full Load A 16.0 9.2 8.0
AC Locked Rotor A 96.0 55.2 48.0

Non-Inductive or
Resistance Load A
(Not Lamp Loads)

Pilot Duty 125 VA, 24 to 277 VAC

Note: When used as a two-circuit control,
the total connected load must not exceed
2,000 VA.

Differential
F° (C°)

5 (2.8) each stage
3 (1.7) fixed between stages

16.0 9.2 8.0

Bulb and
Capillary

0.290 x 2-1/2 in.
10 ft capillary

Bulb Well No.
(Order Separately)

WEL16A-600R Knob

Range
Adjuster

The performance specifications are nomina l and con form to accep table ind ustry stand ards. For applicati ons at con ditions be yond these specification s, consult th
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.

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