Johnson Controls A72 Series Data Sheet
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A72 Series
Action on Increase
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A72 Action Diagram
A72AA-3 Temperature Control
Single-Stage Electromechanical Temperature Controls
Code No. LIT-1927145
A72 Series Two-Pole Heavy Duty Temperature Controls (Adjustable
Differential)
Description
The A72 Series Temperature Controls
incorporate a vapor charged sensing element
and heavy duty contacts.
Refer to the A70, A72 Series Temperature
Controls for Refrigeration and Heating
(LIT-125155) for important product application
information.
Features
The double-pole, single-throw (DPST) contact
block contains two isolated sets of contacts
that make or break simultaneously.
Applications
Use for automatic control of heavy electrical
loads.
Selection Charts
Product Code
Number
A72AA-1C DPST
A72AA-2C DPST
A72AA-3C DPST
A72AP-1C
1. Packing nut assembly available for direct immersion applications, Code No. FTG13A-600R.
2. Equipped with manual PUSH TO START button. Manual start feature is especially desirable on milk cooler jobs; permits manual start of the compressor when
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bulb temperature is between closing and opening setting of switch.
Replacement Covers
Product Code Number Description
CVR17A-620R Automatic reset cover
CVR17A-621R Manual reset cover
Switch
Action
Close high
Open low
Close high
Open low
Close high
Open low
DPST
Close high
Open low
Range
°F (°C)
-30 to 30
(-34 to -1)
15 to 55
(-9 to 13)
50 to 90
(10 to 32)
-10 to 65
(-23 to 18)
Differential
F° (C°)
4 to 25
(2 to 14)
3 to 30
(1.7 to 17)
3 to 30
(1.7 to 17)
4 to 40
(2 to 22)
Bulb and
Capillary
3/8 in. x 3 in.
6 ft capillary
3/8 in. x 3 in.
6 ft capillary
11/16 in. x 6-3/4 in.
Cross ambient
6 ft capillary
11/16 in. x 6-3/4 in.
Cross ambient
6 ft capillary
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Maximum Bulb
Temperature °F (°C)
200
(93)
200
(93)
135
(57)
130
(54)
Range
Adjuster
Screwdriver slot
Screwdriver slot
Screwdriver slot
Screwdriver slot
Technical Specifications
Electrical Ratings
Motor Ratings VAC 120
Horsepower 233555
AC Full Load A 24.0 24.0 24.0 15.0 15.9 15.0
AC Locked Rotor A 144.0 144.0 144.0 90.0 95.4 90.0
AC Non-Inductive A 24.0 24.0 24.0 – – –
DC Non-Inductive A
Pilot Duty 125 VA, 120 to 600 VAC; 57.5 VA, 120 to 300 VDC
1. These full load and locked rotor ampere (not horsepower) ratings apply to hermetic compressors only.
2. This rating does not apply to the A72AP-1C Control.
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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Single-Phase
3.0 – 0.5 – – –
208
Single-Phase
R-41
1
240
Single-Phase
1
220
Two -Ph ase
208
Three-Phase
220
Three-Phase
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