www.honeywell.com/sensing 1
Precision engineering. Commercial sense. From the exacting
needs of high-end industrial and aerospace applications to
commercial safety and office equipment usage, Honeywell
Sensing and Control (S&C) thermostat solutions are the
recognized, respected leader. Both our commercial and precision
snap-action thermostats include automatic and manual reset
options, phenolic or ceramic housings and a wide variety of
FEATURES
COMMERCIAL THERMOSTATS
2450A Series.
Features: Cost effective • Gold alloy
contacts • Epoxy-sealed cap and
terminals • Wide variety of terminals
• Only a stepped aluminum cap - 15’
spacing, 1” collector for 30’ spacing, and
a 1.5” collector for 50’ spacing. Collector
brackets available per UL
Benets: Gold alloy contacts for low
voltage fire alarm, smoke detector and
potential security device applications.
Small size allows enhanced response to
temperature changes. Epoxy sealed for
extended life. Available with or without
heat collectors. Potential for use in
office copy machines, heat and smoke
detectors, HVAC equipment, computers,
aircraft/aerospace, radar equipment,
medical equipment, and electronic control
systems.
Thermostats
Line Guide
continued on page 7
2450CM Series.
Features: Cost effective • Rivet sleeve
construction • Wide variety of mounting
brackets and terminals
Benets: Small size allows enhanced
response to temperature changes.
Potential for use in high current HVAC,
appliance, hot water heater and office
automation applications.
2450CMG Series.
Features: Cost effective • Gold alloy
contacts • Rivet sleeve construction
• Wide variety of mounting brackets and
terminals
Benets: Small size allows enhanced
response to temperature changes. Gold
alloy contacts for potential use in low
voltage HVAC, appliances, hot water
heater and office automation applications.
2450HR Series.
Features: Cost effective • Rivet sleeve
construction • Factory calibrated • Wide
variety of mounting brackets and terminals
Benets: Small size allows enhanced
response to temperature changes. Factory
calibrated to customer’s specs. 4-posted
“H” construction for application mounting
bracket. Potential for use in HVAC, major
appliances, automotive, heat and smoke
detectors and office copy machines.
2450HRG Series.
Features: Cost effective • Gold alloy
contacts • Rivet sleeve construction
• Factory calibrated • Wide variety of
mounting brackets and terminals
Benets: Small product size allows
enhanced response to temperature
changes. Factory calibrated to customer’s
specification. 4-posted “H” construction
for application mounting bracket.
Gold alloy contacts for low voltage HVAC,
major appliance, automotive, heat/smoke
detectors and copy machine potential
applications.
mounting brackets and terminal options — while our precision
line includes both hermetic and non-hermetic devices. And
each thermostat’s design is configured from a base unit, and
can be customized for temperature tolerance and mechanical
configurations, meeting any of your needs for accuracy and
exactitude. It makes sense to trust industry-leading engineering
and innovation.
2 www.honeywell.com/sensing
2450A Series 2450CM Series 2450CMG Series
Use heat detection high current low voltage
Reset type automatic manual manual
Housing material phenolic, epoxy seal cap
and terminals ceramic ceramic
Functional property open or close on rise open on rise open on rise
Amperage 3 A 15 A/10 A 0.5 A
Operating temperature range 47 °C to 107 °C
[117 °F to 225 °F]
52 °C to 232 °C
[125 °F to 450 °F]
52 °C to 232 °C
[125 °F to 450 °F]
Environmental exposure range 0 °C to 150 °C
[32 °F to 302 °F]
10 °C to 260 °C
[50 °F to 500 °F]
10 °C to 260 °C
[50 °F to 500 °F]
Contacts WE-1 gold alloy cross
point silver/nickel alloy WE-1 gold alloy cross
point
Approvals UL UL, CSA, VDE UL, CSA, VDE
2450HR Series 2450HRG Series 2450R Series
Use high current low current high current
Reset type automatic automatic automatic
Housing material phenolic phenolic phenolic
Functional property open or close on rise open on rise open or close on rise
Amperage 15 A/10 A 0.5 A 15 A/10 A
Operating temperature range 0 °C to 150 °C
[32 °F to 302 °F]
0 °C to 150 °C
[32 °F to 302 °F]
0 °C to 150 °C
[32 °F to 302 °F]
Environmental exposure range -18 °C to 177 °C
[0 °F to 350 °F]
-18 °C to 177 °C
[0 °F to 350 °F]
-18 °C to 177 °C
[0 °F to 350 °F]
Contacts silver/nickel alloy WE-1 gold alloy cross
point silver/nickel alloy
Approvals UL, CSA UL, CSA UL, CSA
Well over 5,000 reasons to
choose Honeywell.
With over 5,000 quality
components in our thermostat
line, we meet any domestic
or international need for
commercial or precision snap-
action solutions.
Commercial thermostats:
You’ll find Honeywell quality
in a wide array of small
and major appliances,
automotive applications, office
copy machines and HVAC
equipment, plus heat and
smoke detectors. Whether
it’s military or aerospace
industries, or your office
building, each Honeywell S&C
thermostat can be designed
to offer the performance and
reliability you demand, and the
service you need.
Precision thermostats:
A highly reliable lineup
for potential high-end
applications, including
computers, copy machines,
aircraft, radar, medical
equipment and electronic
control systems — each
designed to meet the most
stringent environmental
conditions for dielectric
strength, moisture, resistance,
vibration, shock and hermetic
seal. And S&C offers custom-
packaged thermostats for
complete application flexibility.
Thermostats Line Guide
Commercial
Thermostats
Commercial
Thermostats
www.honeywell.com/sensing 3
2450RC Series 2450RCG Series 2450RG Series
Use high current low voltage low voltage
Reset type automatic automatic automatic
Housing material ceramic ceramic phenolic
Functional property open or close on rise open or close on rise open or close on rise
Amperage 15 A/10 A 0.5 A 0.5 A
Operating temperature range 0 °C to 260 °C [32 °F to 500 °F] 0 °C to 260 °C [32 °F to 500 °F] 0 °C to 150 °C [32 °F to 302 °F]
Environmental exposure range -20 °C to 287 °C [0 °F to 550 °F] -20 °C to 287 °C [0 °F to 550 °F] -18 °C to 177 °C [0 °F to 350 °F]
Contacts silver/nickel alloy WE-1 gold alloy cross point WE-1 gold alloy cross point
Approvals UL, CSA, VDE UL, CSA, VDE UL, CSA
2455R Series 2455RA Series 2455RVB Series
Use high current heat detection high current
Reset type automatic automatic automatic
Housing material phenolic phenolic, epoxy seal cap and terminals ceramic, epoxy overmold
Functional property open or close on rise close on rise open or close on rise
Amperage 15 A/10 A 3 A 15 A/10 A
Operating temperature range 0 °C to 150 °C [32 °F to 302 °F] 47 °C to 107 °C [117 °F to 225 °F] -12 °C to 105 °C [10 °F to 250 °F]
Environmental exposure range -18 °C to 177 °C [0 °F to 350 °F] 0 °C to 150 °C [32 °F to 302 °F] -18 °C to 121 °C [0 °F to 250 °F]
Contacts silver/nickel alloy WE-1 gold alloy cross point silver/nickel alloy
Approvals UL, CSA, VDE UL UL, CSA, VDE
Commercial
Thermostats
Commercial
Thermostats
4 www.honeywell.com/sensing
2455RC Series 2455RG Series 2455RM Series
Use high current low voltage high current
Reset type automatic automatic manual
Housing material ceramic phenolic phenolic
Functional property open on rise open or close on rise open on rise
Amperage 15 A/10 A 0.5 A 15 A/10 A
Operating temperature range 0 °C to 260 °C [32 °F to 500 °F] 0 °C to 150 °C [32 °F to 302 °F] 0 °C to 150 °C [32 °F to 302 °F]
(inclusive)
Environmental exposure range -20 °C to 287 °C [0 °F to 550 °F] -18 °C to 177 °C [0 °F to 350 °F] -18 °C to 260 °C [0 °F to 500 °F]
Contacts silver/nickel alloy WE-1 gold alloy cross point silver/nickel alloy
Approvals UL, CSA, VDE UL, CSA, VDE UL, CSA, VDE
3000 Series
Description custom packaged
Amperage 7.0 A resistive
Housing material stainless steel or brass
Operating temperature -29 °C to 260 °C [-20 °F to 500 °F]
Environmental exposure range -62 °C to 288 °C [-80 °F to 550 °F]
Dielectric strength MIL-STD-202, Method 301; 1250 Vac 60 Hz - Terminal to Case
Insulation resistance MIL-STD-202, Method 302; 50 MOhm min. Terminal to Case
Contact resistance MIL-STD-202, Method 307; 0.050 Ohm
Hermetic seal MIL-STD-202, Method 112; Cond. A, 1x10-5 atm cc/s
Moisture resistance MIL-STD-202, Method 106
Shock N/A
Vibration N/A
Thermal shock N/A
Salt spray N/A
Acceleration N/A
Thermostats Line Guide
Commercial
Thermostats
Precision
Thermostats
www.honeywell.com/sensing 5
3100 Series 3100U Series 3106 Series
Description hermetic UL-approved hermetic low level hermetic
Amperage 2.0 A/1.0 A/5.0 A/5.0 A 3.0 A resistive max. 100 mA/500 mA
Housing material steel housing hermetically sealed with
glass-to-metal seal at terminal junction
steel housing hermetically sealed with
glass-to-metal seal at terminal junction
steel housing hermetically sealed with
glass-to-metal seal at terminal junction
Operating temperature -29 °C to 260 °C [-20 °F to 500 °F] -29 °C to 260 °C [-20 °F to 500 °F] -29 °C to 204 °C [-20 °F to 400 °F]
Environmental exposure range -62 °C to 288 °C [-80 °F to 550 °F] -62 °C to 288 °C [-80 °F to 550 °F] -62 °C to 260 °C [-80 °F to 500 °F]
Dielectric strength MIL-STD-202, Method 301; 1250 Vac 60 Hz
- Terminal to Case
MIL-STD-202, Method 301; 1250 Vac
60 Hz - Terminal to Case
MIL-STD-202, Method 301; 1250 Vac
60 Hz - Terminal to Case
Insulation resistance MIL-STD-202, Method 302; Cond. B - 500
MOhm - 500 Vdc applied
MIL-STD-202, Method 302; 50 MOhm
or MIL-STD-202, Method 302; Cond.
B - 500 MOhm - 500 Vdc applied
MIL-STD-202, Method 302; Cond. B -
500 MOhm - 500 Vdc applied
Contact resistance MIL-STD-202, Method 307; 0.050 Ohm MIL-STD-202, Method 307; 0.050 Ohm
max.
MIL-STD-202, Method 307; 0.050
Ohm
Hermetic seal MIL-STD-202, Method 112;
Cond. 1 x 10-5
MIL-STD-202, Method 112;
Cond. 1 x 10-5
MIL-STD-202, Method 112;
Cond. 1 x 10-5
Moisture resistance MIL-STD-202, Method 106 MIL-STD-202, Method 106 MIL-STD-202, Method 106
Shock N/A N/A N/A
Vibration N/A N/A N/A
Thermal shock N/A N/A N/A
Salt spray N/A N/A N/A
Acceleration N/A N/A N/A
Precision
Thermostats
6 www.honeywell.com/sensing
Thermostats Line Guide
3150 Series 3153 Series 3156 Series 3200 Series
Description low silhouette hermetic low silhouette hermetic low level, silhouette hermetic aerospace
Amperage 2.0 A/1.0 A/2.0 A/2.0 A 2.0 A resistive 100 mA/500 mA 5.0 A resistive
Housing material
steel housing hermetically
sealed with glass-to-metal
seal at terminal junction
steel housing hermetically
sealed with glass-to-metal
seal at terminal junction
steel housing hermetically
sealed with glass-to-metal seal
at terminal junction
steel housing hermetically
sealed with glass-to-metal seal
at terminal junction
Operating temperature -29 °C to 177 °C
[-20 °F to 350 °F]
-29 °C to 177 °C
[-20 °F to 350 °F]
-29 °C to 204 °C
[-20 °F to 400 °F]
-51 °C to 163 °C
[-60 °F to 325 °F]
Environmental exposure range -54 °C to 260 °C
[-65 °F to 500 °F]
-65 °C to 260 °C
[-85 °F to 500 °F]
-62 °C to 260 °C
[-80 °F to 500 °F]
-65 °C to 177 °C
[-85 °F to 350 °F]
Dielectric strength
MIL-STD-202, Method 301;
750 Vac 60 Hz - Terminal
to Case
MIL-STD-202, Method 301;
1250 Vac 60 Hz - Terminal
to Case
MIL-STD-202, Method 301;
1250 Vac 60 Hz - Terminal to
Case
MIL-STD-202, Method 301;
1250 Vac
Insulation resistance
MIL-STD-202, Method 302;
Cond. B - 500 MOhm - 500
Vdc applied
MIL-STD-202, Method 302;
500 MOhm
MIL-STD-202, Method 302;
Cond. B - 500 MOhm - 500 Vdc
applied
MIL-STD-202, Method 302;
500 MOhm
Contact resistance MIL-STD-202, Method 307;
0.050 Ohm
MIL-STD-202, Method 307;
0.050 Ohm max.
MIL-STD-202, Method 307;
0.050 Ohm
MIL-STD-202, Method 307;
0.025 Ohm max.
Hermetic seal MIL-STD-202, Method 112;
Cond. 1 x 10-5
MIL-STD-202, Method 112;
Cond. C
MIL-STD-202, Method 112;
Cond. 1 x 10-5
MIL-STD-202, Method 112;
Cond. C
Moisture resistance MIL-STD-202, Method 106 MIL-STD-202, Method 106 MIL-STD-202, Method 106 MIL-STD-202, Method 106
Shock N/A MIL-STD-202, Method 213;
100 G N/A MIL-STD-202, Method 213;
750 G
Vibration N/A MIL-STD-202, Method 204;
20 G N/A
MIL-STD-202, Method 204;
30 G: MIL-STD-202, Method
214; 50 G
Thermal shock N/A MIL-STD-202, Method 107;
Cond. B N/A MIL-STD-202, Method 107;
Cond. B
Salt spray N/A MIL-STD-202, Method 101;
Cond. B N/A MIL-STD-202, Method 101;
Cond. B
Acceleration N/A N/A N/A MIL-STD-202, Method 212;
20 G
Precision
Thermostats
www.honeywell.com/sensing 7
2450R Series.
Features: Cost effective • Rivet sleeve
construction • Low profile • Wide variety of
mounting brackets and terminals
Benets: Low profile and small size
allows enhanced response to temperature
changes. Factory calibrated to customer’s
specification. Potential for use in
high current HVAC, major appliance,
automotive, heat/smoke detector and copy
machine applications.
2450RC Series.
Features: Cost effective • Rivet sleeve
construction • Low profile • Wide variety of
mounting brackets and terminals
Benets: Low profile and small size
allows enhanced response to temperature
changes. Potential for use in high current
HVAC, power supplies, decorative fire
places, glue gun applications.
2450RCG Series.
Features: Cost effective • Gold alloy
contacts • Rivet sleeve construction • Low
profile • Wide variety of mounting brackets
and terminals
Benets: Low profile and small product
size allows enhanced response to
temperature changes. Gold alloy contacts
allow for potential use for low voltage
HVAC, power supply, decorative fire
places and glue gun applications.
2450RG Series.
Features: Cost effective • Gold alloy
contacts • Rivet sleeve construction
• Wide variety of mounting brackets and
terminals
Benets: Small product size allows
enhanced response to temperature
changes. 4- posted “H” construction for
application mounting bracket. Gold alloy
contacts allow for potential use for low
voltage tabletop appliance applications.
2455R Series.
Features: Cost effective • Rivet sleeve
construction • High profile • High current
• Wide variety of mounting brackets and
terminals
Benets: Small product size allows
enhanced response to temperature
changes. Factory calibrated to customer’s
specification. Potential for use in high
current HVAC, automotive, copy machine,
major appliance and heat/smoke detection
applications.
2455RA Series.
Features: Cost effective • Gold alloy
contacts • Epoxy-sealed cap and
terminals • Wide variety of terminals
• Stepped aluminum cap - 15 ft spacing,
1” collector for 30’ spacing, and a 1.5
in collector for 50 ft spacing. Collector
brackets available per UL
Benets: Small size allows enhanced
response to temperature changes.
Epoxy sealed for long life. Available with
or without heat collectors. Gold alloy
contacts allow for potential use for low
voltage fire alarm, smoke detector and
security device applications.
2455RBV Series.
Features: Cost effective • Epoxy overmold
• Rivet sleeve construction • Dust-free
housing • Factory calibrated • Wide
variety of mounting brackets and terminals
Benets: Epoxy overmolded construction
provides electrical insulation. Small size
allows enhanced response to temperature
changes. Factory calibrated to customer’s
specification. Potential for use in high
current automotive and industrial
equipment applications.
2455RC Series.
Features: Cost effective • Rivet sleeve
construction • High profile • Wide variety
of mounting brackets and terminals
Benets: Small product size allows
enhanced response to temperature
changes. Potential for use in high current
HVAC, power supply, spa and office
automation applications.
2455RG Series.
Features: Cost effective • Gold alloy
contacts • Rivet sleeve construction
• High profile • Factory calibrated • Wide
variety of mounting brackets and terminals
Benets: Small product size allows
enhanced response to temperature
changes. Factory calibrated to customer’s
specification. Gold alloy contacts allow
for potential use for low voltage HVAC,
automotive, copy machines, heat/
smoke detection and major appliance
applications.
2455RM Series.
Features: Cost effective • Rivet sleeve
construction • Factory calibrated • Wide
variety of mounting brackets and terminals
Benets: Small size allows enhanced
response to temperature changes. Used
in high current. Factory calibrated to
customer’s specification. Potential uses
include HVAC, power supply and office
automation.
PRECISION THERMOSTATS
3000 Series.
Features: Custom packaging
• Hermetically sealed • Tight tolerances
• Tight differentials • Customized probe
length • Hermetic connector or potted
constructions
Benets: Internal and external design
options meet exacting customer
requirements. All-welded, hermetically-
sealed stainless steel construction for
potential military applications requiring
flexibility in mounting and terminal
configurations.
3100 Series.
Features: Hermetically sealed • Tight
tolerances • Tight differentials • Pre-set
and tamper proof • SPST contacts • Wide
variety of mounting brackets and terminals
Benets: Designed to meet or exceed
critical commercial and industrial
specifications. Temperature calibrations
pre-set at factory. Each unit 100%
thermally and mechanically inspected.
Potential applications include computers,
medical electronics, power supplies,
industrial controls, infotech, and test
equipment.
8 www.honeywell.com/sensing
3100U Series.
Features: UL approved • Hermetically
sealed • Tight tolerances • Tight
differentials • Pre-set and tamper proof
• SPST contacts • Wide variety of
mounting brackets and terminals
Benets: UL approved products designed
to meet or exceed critical commercial
and industrial specifications. Temperature
calibrations pre-set at factory. Each
unit 100 % thermally and mechanically
inspected. Potential applications include
computers, medical electronics, power
supplies, industrial controls, infotech, and
test equipment.
3106 Series.
Features: Gold alloy contacts
• Hermetically sealed • Tight tolerances
• Tight differentials • Pre-set and tamper
proof • SPST contacts • Wide variety of
mounting brackets and terminals
Benets: Gold alloy contacts for low
voltage applications. Designed to meet or
exceed critical commercial and industrial
specifications. Temperature calibrations
pre-set at factory. Each unit 100%
thermally and mechanically inspected.
Potential applications include computers,
medical electronics, power supplies,
industrial controls, infotech, and test
equipment.
3150 Series.
Features: Low silhouette and compact
design • Hermetically sealed • Tight
tolerances • Tight differentials • Pre-set
and tamper proof • SPST contacts • Wide
variety of mounting brackets and terminals
Benets: Low silhouette and compact
design may be well suited for potential
applications including industrial, food
service, telecom, medical, and infotech
where space is at a premium. Temperature
calibrations pre-set at factory. Each
unit 100% thermally and mechanically
inspected.
3153 Series.
Features: Low silhouette and compact
design • Hermetically sealed • Tight
tolerances • Tight differentials • Pre-set
and tamper proof • SPST contacts • Wide
variety of mounting brackets and terminals
Benets: Acceptance testing performed
in accordance to Mil-PRF-24236, Table
III. Temperature calibrations pre-set at
factory. Each unit 100% thermally and
mechanically inspected. Low silhouette
and compact design may be well suited
for potential military and commercial
aircraft applications where space is at a
premium.
3156 Series.
Features: Low silhouette and compact
design • Gold alloy contacts
• Hermetically sealed • Tight tolerances
• Tight differentials • Pre-set and tamper
proof • SPST contacts • Wide variety of
mounting brackets and terminals
Benets: Gold alloy contacts for potential
low voltage applications. Temperature
calibrations pre-set at factory. Each
unit 100% thermally and mechanically
inspected. Low silhouette and compact
design may be well suited for potential
applications including industrial, food
service, telecom, medical, and infotech
where space is at a premium.
3200 Series.
Features: NASA certified • Space
qualified • Hermetically sealed • Tight
tolerances • Tight differentials • Pre-set
and tamper proof • SPST contacts • Wide
variety of mounting brackets and terminals
available
Benets: Temperature calibrations pre-set
at factory. Each unit 100% thermally and
mechanically inspected. Desinged to
meet or exceed military and aerospace
specifications for spaceflight use,
including temperature stability, shock,
vibration and cleanliness.
www.honeywell.com/sensing 9
WARNING
PERSONAL INJURY
• DO NOT USE these products as
safety or emergency stop devices
or in any other application where
failure of the product could result in
personal injury.
Failure to comply with these
instructions could result in death or
serious injury.
WARNING
MISUSE OF DOCUMENTATION
• The information presented in this
catalogue is for reference only. DO
NOT USE this document as product
installation information.
• Complete installation, operation and
maintenance information is provided
in the instructions supplied with each
product.
Failure to comply with these
instructions could result in death or
serious injury.
Sensing and Control
Automation and Control Solutions
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422 USA
+1-815-235-6847
www.honeywell.com/sensing
009031-2-EN IL50 GLO
March 2011
Copyright © 2011 Honeywell International Inc. All rights reserved.
Warranty. Honeywell warrants goods of
its manufacture as being free of defective
materials and faulty workmanship.
Honeywell’s standard product warranty
applies unless agreed to otherwise by
Honeywell in writing; please refer to your
order acknowledgement or consult your
local sales office for specific warranty
details. If warranted goods are returned to
Honeywell during the period of coverage,
Honeywell will repair or replace, at its
option, without charge those items it finds
defective. The foregoing is buyer’s sole
remedy and is in lieu of all warranties,
expressed or implied, including those
of merchantability and tness for a
particular purpose. In no event shall
Honeywell be liable for consequential,
special, or indirect damages.
WARNING
PERSONAL INJURY
• DO NOT USE these products as
safety or emergency stop devices
or in any other application where
failure of the product could result in
personal injury.
Failure to comply with these
instructions could result in death or
serious injury.
WARNING
MISUSE OF DOCUMENTATION
• The information presented in this
catalogue is for reference only. DO
NOT USE this document as product
installation information.
• Complete installation, operation and
maintenance information is provided
in the instructions supplied with each
product.
Failure to comply with these
instructions could result in death or
serious injury.
While we provide application assistance
personally, through our literature and
the Honeywell web site, it is up to the
customer to determine the suitability of the
product in the application.
Specifications may change without notice.
The information we supply is believed to
be accurate and reliable as of this printing.
However, we assume no responsibility for
its use.
For more information about Sensing and
Control products, visit www.honeywell.
com/sensing or call +1-815-235-6847
Email inquiries to info.sc@honeywell.com
10 www.honeywell.com/sensing
Notes
