Johnson Controls A11 Series Data Sheet
A11 Series Low Temperature
Cutout Control
A11 Series Low Temperature Cutout Controls Dimensions, in. (mm)
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Code No. LIT-1927005
Issued November 13, 2015
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)
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
representative.
Controls®
for important product application information.
Electrical Rating
Motor Rating
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
120 V 208 V 240 V
Selection Chart
Model Description
A11A SPST, open low, manual reset
A11B SPST, open low, automatic recycle
A11D SPDT, manual reset
A11E SPDT, automatic recycle
The performance specifications are nomina l and conf orm to accep table industr y standar ds. For ap plications a t condition s beyond th ese specification s, consult the local Johnson Controls o ffice.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.
www.johnsoncontrols.com
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A11 Series Low Temperature Cutout Controls (Continued)
Technical Specifications
A11 Low Temperature Cutout Controls
Product Codes A11A: SPST, open low, manual reset
Range Cutout 35 to 45°F (2 to 7°C)
Differential A11A and A11D: Temperature must be 12°F (6.7°C) above cutout point before control can be reset.
Ambient Temperature Minimum: 0°F (-18°C)
Maximum Temperature at Bulb 250°F (121°C)
Sensing Element 1/8 in. x 20 ft (3 mm x 6.1 m) or 1/8 in. x 40 ft (3 mm x 12.2 m)
Capillary Length 4 ft (1.2 m)
Switch Snap-acting contacts in dust-protected enclosure
Material Case: 0.6 (2 mm) cold rolled steel
Finish Galvanized steel
Conduit Opening 22 mm (9/10 in.) hole for 13 mm (1/2 in.) conduit
Mounting Bracket Standard on all controls
Shipping Weight Individual pack: 1.8 lb (0.8 kg)
Electrical Rating Pilot Duty: 125 VA, 24 to 277 VAC
Motor Ratings AC Full Load Ampere: 120 V = 16.0 A, 208 V = 9.2 A, 240 V = 8.0 A
Compliance United States UL Listed, File SA516, SDFY
A11B: SPST, open low, automatic recycle
A11D: SPDT, manual reset
A11E: SP DT, automatic recycle
A11B and A11E: 12°F (6.7°C)
Maximum: 140°F (60°C)
Cover: 0.3 in. (1 mm) cold rolled steel
Overpack of 20 units: 38 lb (17 kg)
AC Locked Rotor Ampere: 120 V = 96.0 A, 208 V = 55.2 A, 240 V = 48.0 A
Non-Inductive Ampere: 120 V = 16.0 A, 208 V = 9.2 A, 240 V = 8.0 A
FCC Compliant to CFR 47, Part 15 Subpart B, Class A
Canada UL Listed, CSA Class No. 1222 01, File LR948
Industry Canada, ICES-003
The performance specifications are no minal and co nform t o acceptab le ind ustry standar ds. For appl ications at condition s beyond these specifica tions, consult the local Johnson Co ntrols 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
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