1NT Series Datasheet by Sensata Technologies

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Copyright © 2018 Sensata Technologies, Inc.
1NT | SERIES
FIXED TEMPERATURE THERMOSTATS
Single throw, snap-action, fixed temperature thermostat suitable for a variety of Industrial and commercial applications. 1NT is recognized by agencies
around the world and depending on its configuration and application, is widely used as a regulating thermal switch, over-temperature control or pilot
duty control switch.
Features
Applications
Introduction
• ISO9001: 2000 certification
• Ambient temperature rating from -40ºC to 240ºC (-40ºF to 464ºF)
• 1NT base provides:
- Low cost
- High temperature capability
- Clean processing
- High impact strength
- Low static generation
• Many termination and mounting configurations available
• Switch actions:
- Automatic reset: Available with both normally open and normally
closed switch logic
- Manual reset: Mechanical reset device
- Trip free manual reset: UL M2 class rating that resists consumer
tampering
- One shot: meets agency requirements for single operation device
• Power Distribution
• Automation
• Power Supplies
• Heating Systems
• HVAC
• Gas and Electric Furnace
• Boilers
• Espresso Machines
• Refrigeration
• Electric motors
• Heating Elements
• Laboratory Equipment
• Medical Equipment
• Automotive & HVOR
• Panel Heaters
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Copyright © 2018 Sensata Technologies, Inc.
All dimensions mm (in.)
STANDARD CONSTRUCTIONS
High Profile Construction
Options shown: 90° – 1/4” Q.C. terminals with
Surface mount flange
Low Profile Construction
4 Post Options shown: 45°– 1/4” Q.C. terminals
with 4 post and flat Al cup
Manual Reset Construction
Options shown: Flat 1/4” Q.C. terminals with
Airstream mount cup
Part Types by Construction
1NT02 Auto Reset / Silver Contacts
1NT02TL Low Profile / One Shot
1NT20 Auto Reset / Gold Contacts
1NT01 Auto Reset / Silver Contacts
1NT11 Auto Reset / Gold Contacts
1NT09 One Shot: -35°C (-31°F) Reset
1NT10 One Shot: 0°C (32°F) Reset
1NT08 Manual Reset / Silver Contacts
1NT12 Manual Reset / Gold Contacts
1NT15 Trip Free MR / Silver Contacts
1NT19 Trip Free MR / Gold Contacts
ø3.72
(.147)
Ref.
23.8
(.937) Ref.
16.6 Max.
(.654)
6.5
(.256)
Max.
ø19.4
(.764) Max.
ø14.7
(.579)
Max.
12.5
(.492)
max.
4.3
(.170)
Max.
30.4
(1.197)
Max.
30.0
(1.181)
Max.
ø16.0
(.630) Max.
12.52
(.493)
Max.
ø14.7
(.579) Max.
6.65
(.262)
Min.
ø16.0
(.630)
Max.
ø14.6
(.575) Max.
12.9
(.508)
Max.
2.6
(.102)
Max.
23.8
(.937) Ref.
30.2
(1.189)
Max.
ø3.7 (.146) Ref.
34.2 (1.346) Max.
ø14.7
(.579)
Max.
ø16.0
(.630)
Max. 20.8
(.819)
Max.
5.6
(.220) Max.
12.5
(.492) Max.
4.4
(.173)
Max.
Manual Reset and One-Shot Thermostats
C
<60
61 TO 160
161 TO 204
F
<140
141 to 320
321 to 399
C
±4.0
±5.0
±6.0
F
±7.5
±9.0
±11.0
Nominal Top
Temperature
Open
Tolerances
CUP
BIMETALLIC
DISC
MOVABLE
ARM
SPRING
METAL TO METAL
TERMINAL JOINT
THERMOPLASTIC BASE
KAPTON
INSULATOR
STANDARD TEMPERATURES, TOLERANCES AND DIFFERENTIAL
22.1
(.870)
Max.
Page 3
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Copyright © 2018 Sensata Technologies, Inc.
Automatic Reset Thermostats
Nominal Top
Temperature
Min. Bottom
Temperature Differential Standard Tolerances
Open Close
˚C ˚F ˚C ˚F ˚C ˚F ˚C ˚F ˚C ˚F
18 to 27 65 to 80 -33 -26
11 to 16
17 to 21
22 to 33
20 to 29
30 to 38
39 to 59
±3.0
±3.0
±3.0
±5.5
±5.5
±5.5
±4.0
±4.5
±5.5
±7.5
±8.5
±10.0
28 to 80
and
81 to 93(1)
81 to 176
and
177 to 199
-33
50
-26
122
11 to 13
14 to 16
17 to 33
20 to 23
24 to 29
30 to 59
±3.0
±3.0
±3.0
±5.5
±5.5
±5.5
±4.0
±4.5
±5.0
±7.5
±8.5
±9.0
94 to 121(1) 200 to 249(1) 50 122
11 to 16
17 to 21
22 to 33
34 to 55
20 to 29
30 to 38
39 to 59
60 to 99
±3.5
±3.5
±3.5
±5.5
±6.5
±6.5
±6.5
±10.0
±4.5
±5.5
±6.5
±11.0
±8.5
±10.0
±12.0
±20.0
122 to 149 250 to 300 50 122
14 to 21
21 to 33
34 to 55
24 to 38
39 to 59
60 to 99
±4.0
±4.0
±5.5
±7.5
±7.5
±10.0
±5.5
±8.0
±11.0
±10.0
±14.5
±20.0
150 to 177 301 to 350 50 122
22 to 33
34 to 44
45 to 55
39 to 59
60 to 79
80 to 99
±5.0
±5.5
±5.5
±9.0
±10.0
±10.0
±9.0
±11.0
±11.0
±16.5
±20.0
±20.0
178-204(2) 351 to 399 50 122
22 to 33*
34 to 44
45 to 55
39 to 59
60 to 79
80 to 99
±5.0
±5.5
±5.5
±9.0
±10.0
±10.0
±9.0
±11.0
±11.0
±16.5
±20.0
±20.0
ACCESSORIES AND OPTIONS
(1) Not valid for Fan Devices
(2) Top Temp for Fan Devices cannot exceed 380°F (193°C)
Fixed Rotation Surface
Mount Flange 57336
Available mounting rotation relative
to terminals - 90 ˚ with Aluminum
-0 ˚, 90˚ / or 57˚, 127˚, 135˚ CCW
with Nickel Plated Steel
Loose Ear Surface Mount
Flange 27183
Material: Aluminum
Wide Eared – Fixed Rotation
Mounting Flange 57337
Material: Nickel Plated Steel
Available mounting rotation
relative to terminals - 45˚ CCW
Bolt On Assembly 73972
Flanges
Thread
Specs: Metric: M4 x 0.7 - 6G
M5 x 0.8 - 6G
Stud
Length:
Metric:
6.15, 7.00, 8.00,
9.00 (with M4)
8.00 (with M5)
English: 6 x 32 - 1/2“ Long
8 x 32 - 1/4” Long
Material: Stud: Zinc Plated Steel
Cap: Aluminum
6.5
(.256) Max.
19.4
(.764)
Max.
ø3.72
(.147)
Ref.
23.8
(.937)
Ref.
18.4
(.724) Max.
0.38
(.015) Ref.
3.51
(.139) Max.
ø 14.9 Hole
(.587) Ref.
18.4
(.724)
Max.
19.4
(.764)
Max.
6.5
(.256) Max.
3.72
(.146) Ref.
0.38
(.015) Ref.
3.81
(.150)
Max.
23.8 (.937)
Ref.
22.5
(.886) Max. 2.95
(.116) Ref.
4.75.
(.187)
Max.
43.28 (1.704) Max.
0.38
(.015) Ref.
31.75
(1.250) Ref.
3.81(.150)
Max.
18.4 (.724) Max.
13.74
(.541) Max.
15.90
(.626) Max.
Lgth. Varies
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Copyright © 2018 Sensata Technologies, Inc.
Airstream Mount Integral
Cup (slotted mounting holes)
57367
Material: Aluminum
Available mounting rotation relative
to terminals - 0˚ or 90˚ Closed
Bottom Only
Wide-Eared Integral Cup
57608
Material: Stainless Steel
Available mounting rotation
relative to terminals - 0˚ or 90˚
Closed Bottom Only
“Tear-Drop” Integral Cup
57609
Material: Stainless Steel
Available mounting rotation
relative to terminals - 0˚ or 90˚
Closed Bottom Only
Large Oval Integral Cup
59122
Material: Aluminum
Available mounting rotation
relative to terminals
0˚, 45˚ or 90˚ with Closed Bottom
0˚ or 90˚ with Open Bottom
4.5
(.177)
Ref.
3.4
(.134)
Ref.
24.5
(.965) Ref.
20.15
(.793)
Max.
32.15
(1.266)
Max.
5.5
(.217) Max.
0.5
(.020)
Ref.
16.5
(.650)
Max.
43.28
(1.704) Max.
22.50
(.886)
Max.
31.75
(1.250) Ref.
ø.475
(.187)
Ref.
0.25
(.010) Ref.
16.0
(.630)
Max.
4.6 (.181)
Max.
15.87
(.625)
Ref.
22.50
(.886)
Max.
.475
(.187)
Ref.
0.25
(.010) Ref.
21.72
(.855)
Max.
11.3
(.445)
Max.
16.0
(.630)
Max. 4.6
(.181)
Max.
90omounting option is also available
with 57612 teardrop shaped stiffening
flange upon customer request.
Note:
1.57
(.062) Ref.
39.67
(1.562) Ref.
38.3
(1.508)
Max.
.438
(.173)
Ref.
51.1
(2.010) Max.
HOLE
OPT.
. 0.33
(.013) Max.
.33
(.013)
Ref.
16.0
(.630)
Max. 5.3 (.209) Max.
Cup Styles
Airstream Mount Integral Cup
57611
Material: Aluminum
Available mounting rotation relative
to terminals – O or 90 Closed Bottom
Only
Flat Cup 73926
Materials: Aluminum,
Stainless Steel or Copper
Airstream Mount Integral Cup 27185
Material: Stainless Steel
Available mounting rotation relative to
terminals
0˚, 45˚ or 90˚ with Closed Bottom
0˚ or 90˚ with Open Bottom
3NT Flange Cup 57366
Material: Aluminum or Copper
Closed Bottom Only
ø3.7
(.146) Ref.
20.8
(.819)
Max.
23.8
(.937) Ref.
30.2
(1.189) Max.
0.34 (.013) Ref.
16.0
(.630)
Max. 4.5
(.177) Max.
16.26
(.640) Max.
3.94
(.155) Max.
0.30
(.012) Ref.
16.0
(.630)
Max.
19.7
(.776)
Max.
0.5 (.020)
Ref. 16.5
(.650)
Max.
5.5
(.217)
Max.
See Note:.
20.8
(.819)
Max.
23.8
(.937) Ref.
Hole
Optional
30.2
(1.189) Max.
0.25 (.010) Ref.
16.0
(.630) Max.
4.4 (.173) Max.
Available Diameter Mounting Holes
with open bottom: 3.7 (.146)
with closed bottom: 3.7(.146) / 4.2(.165) or none
Note:
aw?
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Copyright © 2018 Sensata Technologies, Inc.
Solder Terminal 27182*
Material: Tin Plated Brass
5.7
(.224)
Max. 2.8
(.110) Ref.
ø 3.22 (.127) Ref.
0.50
(.020)
Ref.
Crimp Terminal 27184*
Material: Tin Plated Brass
2.6
(.102)
Ref.
3.5
(.138)
Ref.
0.50
(.020)
Ref.
Weld Terminal 57201
Material: Nickel Plated Steel
5.6
(.220) Ref.
4.45
(.175) Max.
.071
(.028)
Ref.
Screw Terminal 57200
Material: Nickel Plated Steel
M3 x 0.5 Class 6H Thread
0.8
(.032)
Ref.
3.55
(.140) Ref.
6.42
(.253) Max.
Quick Connects
27132
27162*
27163
Thickness (A):
0.8(.031)
0.5(.020)
0.8(.031)
Width (B):
6.3(.250)
4.8(.187)
4.8(.187)
Materials: Brass - Solid, Ni, Ag, or Tin Plated
Steel - Nickel Plated
15.62
(.615)
Max.
“B”
“A”
45o
90o
Positions
Flat
Standard Terminal
*10A Max. on all terminals 0.51 (.020 thick
All dimensions mm (in.)
Weld Terminal 57312*
Material: Nickel Plated Steel
.396
(.156) Ref.
5.6
(.220) Max.
.254
(.100)
Ref.
0.50
(.020) Ref.
Narrow
Tab
Wide
Tab
6.35
(.250)
Ref.
0.50
(.020) Ref.
Special Processing
A - Wire Lead Assy
E - Exposed Disc
Family
See Standard Construction Table
Switch Type
L - Limit(3) switch opens on temperature rise
F -Fan(4) switch closes on temperature rise
ID Number
Unique Number Designated by the factory to indicate all other attributes including
Temperatures, Terminals or connectors, Mounting Options, Special Markings, and
other special customer requested requirements.
EXAMPLE EXAMPLE
1NTXX ELXXXX
Operating Temperature
Nominal Open
Temperature
Operating Temperature
L - Limit
F - Fan
Temp. Code
Differential
## Nom. Open to Nom. Close
MR Manual Reset
L150 F30
ORDERING OPTIONS
Temperature Code
The Temperature Code is required to set up or choose the unique part
number for your application requirements.
(3) Limit switch opens on temperature rise
(4) Fan switch closes on temperature rise
C - Celsius
F - Fahrenheit
UL and G—UL ENEC (DEKRA)
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Copyright © 2018 Sensata Technologies, Inc.
These devices are not intended for use as service or repair components, strictly for use by Original Equipment Manufacturer. This
product is not rated as explosion proof and should not be applied in any application where flammable vapors or dust is present. End of
life failure of this device may result in either open or closed circuit condition, and as such, OEMs must apply end of life protection in
series, per agency requirements.
Users are solely responsible for proper design, application and function of this product in the end product or system. Users must
evaluate the suitability of these devices in their application with respect to Temperature Settings, Mechanical and Electrical Life
Cycles, Electrical loads and Environmental conditions.
These products are not environmentally sealed and have exposed electrical components. They are not intended to be used in
applications where exposure to condensing or dripping liquids, Immersion in liquids, or exposure to other environment contaminants
may occur.
Excessive mechanical cycling, high electrical loading or exposure to liquids or other environmental contaminants, as noted above,
may compromise the electrical insulating properties of these devices. Such conditions may result in electric insulation breakdown
accompanied by localized heating. The device may remain permanently closed or open as a result of these conditions as well as at
normal end of life.
IMPORTANT NOTICE
AGENCY APPROVALS & CERTIFICATIONS
THERMOSTAT HANDLING TIPS
1. Exposed disc devices should be kept free of dust and particulates, liquid and condensation. The face of the disc should never be snapped.
2. Mounting screws and drivers for use with smaller integral cups and flanges should be sized to provide adequate clearance to the thermostat body.
3. The installation force applied to the cup face should not exceed 66.7N (15 lbs.)
4. The maximum reset force on the manual reset and trip free button is 22.2N (5 lbs.).
UL and C–UL ENEC (DEKRA)
* UL rated at these current levels at specific open/close temperatures. When applying
to these electrical levels, nominal open/close temperatures must be considered to
determine if the thermostat selected will operate as intended in the user’s application.
Please consult a Sensata Engineer for additional clarification.
** “E” means exposed disc. * Parenthesis indicate inductive load ratings.
** ENEC rated at these current levels at specific open/close temperatures. When
applying to these electrical levels, nominal open/close temperatures must be
considered to determine if the thermostat selected will operate as intended in the
user’s application. Please consult a Sensata Engineer for additional clarification.
Type Max Temp
(°C) Cycles Electrical
Rating
1NT01/02 204
100.000 240Vac 13.5(1.66)A
30.000 240Vac 16(5)A
30.000 400Vac 4(1)A
1NT02T 204 1 240Vac 16(5)A
1NT08 204 10.000 240Vac 16(5)A
10.000 400Vac 4(1)A
1NT09 204 1 240Vac 16(5)A
1NT11 204 100.000 30Vdc 1A
1NT12 204 10.000 30Vdc 1A
1NT15 204 10.000 240Vac 16(5)A
1NT20 204 100.000 30Vdc 1A
1NT30 204 10.000 30Vdc 1A
1NT31 204 10.000 30Vdc 1A
Type Max. Temp. Cycles
(X 1000) Electrical Rating
°C °F
1NT01, 02 204 400 100
120 Vac 0 - 9 amps
10 - 17 amps*
240 Vac 0 - 5 amps
6 - 17 amps*
277 Vac 7.2 amps
1NT08, 15, 08E** 204 400 1 + 5 240 Vac 25 amps
1NT09, 10 204 400 1-Shot 240 Vac
277 Vac
25 amps
7.2 amps
1NT11, 20 204 400 100 125 VA
30 Vdc 1 amp
1NT12, 19 204 400 1 + 5 125 VA
1NT01E, 02E** 204 400 100 120 Vac 10 amps
(EEEB)
Page 7
Americas
+1 (888) 438 2214
sensors@sensata.com
Europe, Middle East & Africa
+31 (74) 357 8156
temperature-info.eu@sensata.com
Asia Pacific
sales.isasia@list.sensata.com
China +86 (21) 2306 1500
Japan +81 (45) 277 7117
Korea +82-10-9218-1179
India +91 (80) 67920890
Rest of Asia +886 (2) 27602006
ext 2808
Rev:03/14/2018 www.sensata.com
CONTACT US
Copyright © 2018 Sensata Technologies, Inc.
Sensata Technologies, Inc. (“Sensata”) data sheets are solely intended to assist designers (“Buyers”) who are developing systems that
incorporate Sensata products (also referred to herein as “components”). Buyer understands and agrees that Buyer remains responsible
for using its independent analysis, evaluation and judgment in designing Buyer’s systems and products. Sensata data sheets have
been created using standard laboratory conditions and engineering practices. Sensata has not conducted any testing other than that
specifically described in the published documentation for a particular data sheet. Sensata may make corrections, enhancements,
improvements and other changes to its data sheets or components without notice.
Buyers are authorized to use Sensata data sheets with the Sensata component(s) identified in each particular data sheet. HOWEVER, NO
OTHER LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE TO ANY OTHER SENSATA INTELLECTUAL PROPERTY RIGHT, AND
NO LICENSE TO ANY THIRD PARTY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT, IS GRANTED HEREIN. SENSATA DATA SHEETS
ARE PROVIDED “AS IS”. SENSATA MAKES NO WARRANTIES OR REPRESENTATIONS WITH REGARD TO THE DATA SHEETS OR USE
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RESPONSIBLE FOR COMPLIANCE WITH ALL LEGAL, REGULATORY AND SAFETY-RELATED REQUIREMENTS CONCERNING ITS PRODUCTS,
AND ANY USE OF SENSATA COMPONENTS IN ITS APPLICATIONS, NOTWITHSTANDING ANY APPLICATIONS-RELATED INFORMATION
OR SUPPORT THAT MAY BE PROVIDED BY SENSATA.
Mailing Address: Sensata Technologies, Inc., 529 Pleasant Street, Attleboro, MA 02703, USA.
WARNINGS
RISK OF MATERIAL DAMAGE AND HOT ENCLOSURE
• The product’s side panels may be hot, allow the product to cool
before touching
• Follow proper mounting instructions including torque values
• Do not allow liquids or foreign objects to enter this product
Failure to follow these instructions can result in serious
injury, or equipment damage.
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
• Disconnect all power before installing or working with this
equipment
• Verify all connections and replace all covers before turning on
power
Failure to follow these instructions will result in death or
serious injury

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