20413 Datasheet, PDF (2/6 Pages) Texas Instruments – Snap-Action Automatic and Manual reset Fixed Temperature Thermostats

Description
Klixon® thermostats have been in
production for over 50 years. The
20413, 20600, and 20650 series
thermostats are especially designed
ed for applications where space,
capacity and ease of assembly are
important production factors. They
are fixed-setting, snap-acting, auto-
matic or manual reset temperature
controls that are ideal for such
applications as: air conditioners,
heating and ventilating equipment,
vending machines, dryers, unit
heaters, tabletop appliances, etc.
All automatic series are available as
limit switches (open on tempera-
ture rise) or fdan switches (close
on temperature rise). Switch action
is SPST, SPDT, or DPST with auto-
matice reset types. Manual reset is
available as a limit switch in SPST
construction only.
The switch mechanism is actuated
by the Klixon snap-action, bimetal
disc which may be enclosed or
exposed. Enclosed disc devices are
particularly recommended for appli-
cations in which dust and lint are
prevalent in the environment.
Exposed disc types are used in
applications where a faster thermal
response to radiant heat is needed.
Contact parts are enclosed for both
disc types for protection against
contamination.
Mountings and Terminals
A variety of terminals and mounting
flanges are available to meet instal-
lation requirements of most
applications.
Flanges can be used for surface or
thru-wall mountings; or, thermostats
can be supplied without flanges for
well or cavity-type mountings.
Flange rotations are specified by
looking down on the terminals and
rotating the flange 30o, 45o, or
90o CW or CCW.
Flanges Available
• Small oval bottom flange
• Integral surface flange
• No flange cup
• 3/4” deep cup
• Special oval bottom flange
Electrical connections to the ther-
mostat must be tight; otherwise,
resistance in a loose connection may
cause sufficient temperature rise to
affect the performance of the ther-
mostat or damage the terminals or
the lead wire insulation.
Terminals Available
Quick connects are available in siver
flash or plain brass.
• 1/4”Quick connects 0o, 30o, 45o,
90o terminals are male spade type
.250” x .032” thick.
• Strap terminals for electric heat-
ing
• Brass screw terminals 0o, 45o
When screw terminals are specified,
washer head screws are supplied
unassembled. Assembled washer
head screws are available at extra
cost. Standard screw terminals have
8-32 NC-2 threads.
Temperaturre Settings,
Tolerances and Nominal
Differentials
The ranges of temperature settings,
tolerances, and nominal differen-
tials shown below are available.
Differential is the difference
between opening and closing tem-
perature in ^oF. For example, a
thermostat which opens at 180oF
and closes at 140oF has a 40o
differential. (Lowest unit prices are
achieved by selecting differentials
in the 30oF to 59oF range). For
temperature settings and differen-
tials other than those shown,
please consult Marketing.
Standard Tolerances
Highest
Temperature
Setting
oF
Nominal
Differential
oF
Standard
Tolerances
Open Close
oF
-10 to 80 10 to 14* ±5 ±5
15 to 29
±6 ±6
30 to 59
±6 ±7
60 to 150 _{±7 ±8}
81 to 200 10 to 29* ±5 ±5
30 to 39
±5 ±6
40 to 59
±5 ±7
60 to 150 ±6 ±8
201 to 250 20 to 29
±5 ±6
30 to 39
±5 ±7
40 to 59
±6 ±8
60 to 150 ±7 ±9
251 to 300 30 to 39
±6 ±8
40 to 59
±7 ±10
60 to 150 ±8 ±11
301 to 350 30 to 39
±7 ±10
**
40 to 59
±8 ±12
60 to 150 ±9 ±13
• Available in SPST construction only.
SPDT thermostats must have 15o minimum differentials.
**20413 series – up to 300o
20600 series – up to 350o
20650 / 54 series – up to 300o; minimum
differential 30o.
Manual Reset
Construction
There are two basic manual reset
constructions:
1) Manual Override – contracts can
be closed at any time after
device has actuated by depress-
ing reset button.
2) Trip-Free – contacts will remain
open after device has actuated
until bimetal disc resets, even if
reset button is depressed.
Agency Recognition
Klixon 206 Series Thermostats are
recognized by UL and CSA. Please
consult Marketing for international
approvals.
UL Electrical Group
File No. E9977
U.S. Guide No. XAPX2
Canada Guide NO. XAPX8
HC&R Group
File NO. MP986
U.S. Guide No. MBPR2
Canada Guide No. MBRR8
For further information write or call:
Texas Instruments Incorporated
Commercial Sensors & Controls
Thermal Controls Marketing
34 Forest Street, MS 23-10
Attleboro, MA 02703-0964
Phone: [phone]
[phone]
Fax; [phone]
or visit our website @: www.tisensors.com
Ambient Temperature
-40oF to +350oF
-40oC to +177oC