User Guide
Printed in U.S.A. 9/08 © Copyright 2008 TAC All Rights Reserved. F-11302-9
Application
For line voltage on-off control of media temperatures in ducts, 
tanks, liquid lines, pipes, etc.
Specifications
Setpoint Dial Range: See Tables 1 and 2.
Sensing Element: Helical bimetal.
Differential: See Tables 1 and 2.
Shipping Ambient Temperature Limits: -40 to 160°F (-40 
to 71°C).
Electrical Switch: See Tables 1 and 2.
Connections: Coded terminals.
Cover: Beige painted steel case with 1/2" conduit opening.
Locations: NEMA Type 1 indoor only.
Mounting: In any position on any surface not subject to 
excessive vibration. For immersion mounting AT-223 will is 
required. Extension mounting bracket (provided) is required 
by UL for duct installation of TA-3434 and TC-3413.
Dimensions:
Case, 5-3/8" high x 3-1/2" wide x 1-7/8" deep (136 mm x 
89 mm x 48 mm).
Element, 1/2" diameter x 7-1/2" insertion length, overall 
length 9-3/8" (131 mm x 191 mm x 238 mm).
ACCESSORIES
AT-223  Brass bulb well (see below)
Table-1 Specifications.
Part 
Number
Device Type
Functional 
Setpoint Dial 
Range
°F (°C)
a
a
Units dual marked °F and °C.
Sensor 
Ambient 
°F (°C)
Differential 
°F (°C)
Switch Type Voltage
Full 
Load 
Amps
Locked 
Rotor 
Amps 
Pilot 
Duty 
(VA)
Min. Max.
TA-3432
High temp. 
manual reset
75 to 135 (23 
to 57)
-25 
(-32)
235 
(113)
Fixed 
b
10 (5)
SPST opens on 
temp. rise
120 16 96
720
240 8 48
TA-3433
High temp. 
manual reset
100 to 160 
(38 to 71)
0 
(-18)
260 
(127)
Fixed 
b
5 (3)
SPST opens on 
temp. rise
120 16 96
720
240 8 48
TA-3434
High temp. 
manual reset
120 to 240 
(49 to 116)
20
 (-7)
300 
(149)
Fixed 
b
10 (5)
b
Reset cannot be accomplished until the sensed temperature is at least 5°F (3°C) below setpoint.
SPST opens on 
temp. rise
120 16 96
720
240 8 48
TA-3441
Low temp. 
manual reset
35 to 59 (1.7 
to 15)
-40 
(-40)
159 
(71)
Fixed 
c
10 (5)
c
Reset cannot be accomplished until the sensed temperature is at least 5°F (3°C) above setpoint.
SPST opens on 
temp. drop
120 16 96
720
240 8 48
TA-3432, TA-3433, TA-3434,
TA-3441, TC-3411, TC-3413
Duct and Immersion Electric Thermostats
General Instructions
Figure-1 Switch Action and Terminal Identification.








