Figure 1: A11 Series Low Temperature
Cutout Control
A11 Series Low Temperature Cutout Controls
Product Bulletin
A1 1A, A1 1B, A1 1D, A11E
Refer to the QuickLIT website for the most up-to-date version of this document.
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.
Code No. LIT-125010
Issued April 2018
Table 1: Features and Benefits
Features Benefits
Precision Repeat A c c ur a cy 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.
Recision Snap-Acting Contacts in a Dust
Protected Enclosure
Direct Reading Scale Provides easy to adjust setpoint. Adjustments can be made from the
Enables the A11 to operate to the fullest potential.
top or bottom of the control.
A11 Series Low Temperature Cutout Controls Product Bulletin
1
Overview
.27
7
2.30
58
1.38
35
.69
17
2.33
59
.34
9
.97
25
2.25
57
2.11
54
4.69
119
3.19
81
.88
22
DIA.
2.09
53
5.38
137
1.25
32
.95
24
.093
2.36
DIA.
2 Mount in g H oles
.281
7.1
DIA.
Length
F
I
G
:
D
i
m
s
.
d
e
s
Figure 2: A11 Series Low Temperature Cutout Controls Dimensions, in. (mm)
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.
Figure 2 shows the A11 dimens ion s . Fi gu re 2
describes the A11 electrical ratings.
Table 2: 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
A11 Series Low Temperature Cutout Controls Product Bulletin
120 V 208 V 240 V
Pilot Duty - 125 VA, 24 to 277 VAC
2
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