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The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc. www.johnsoncontrols.com
R-17
A11 Series Low Temperature Cutout Controls
Description
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.
Refer to the A11 Series Low Temperature
Cutout Controls Product Bulletin (LIT-125010)
for important product application information.
Features
• 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.
Repair Information
If the A11 Series Low Temperature Cutout
Control fails to operate within its specifications,
replace the unit. For a replacement control,
contact the nearest Johnson
Controls®
representative.
A11 Series Low Temperature
Cutout Control
Electrical Rating
Selection Chart
Motor Rating
120 V 208 V 240 V
Motor Description
AC Full Load Amperes 16.0 9.2 8.0
AC Locked Rotor Amperes 96.0 55.2 48.0
Non-Inductive Amperes 16.0 9.2 8.0
Pilot Duty 125 VA, 24 to 277 VAC
Model Description
A11A SPST, open low, manual reset
A11B SPST, open low, automatic recycle
A11D SPDT, manual reset
A11E SPDT, automatic recycle
A11 Series Low Temperature Cutout Controls Dimensions, in. (mm)
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Single-Stage Electromechanical Temperature Controls
Code No. LIT-1927005