Thermostats
Line Guide
Precision engineering. Commercial sense. From the exacting
needs of high-end industrial and aerospace applications tocommercial safety and office equipment usage, Honeywell
Sensing and Control (S&C) thermostat solutions are therecognized, respected leader. Both our commercial and precisionsnap-action thermostats include automatic and manual reset
options, phenolic or ceramic housings and a wide variety ofmounting brackets and terminal options — while our precisionline includes both hermetic and non-hermetic devices. Andeach thermostat’s design is configured from a base unit, andcan be customized for temperature tolerance and mechanicalconfigurations, meeting any of your needs for accuracy andexactitude. It makes sense to trust industry-leading engineeringand innovation.

FEATURES
Commercial Thermostats
2450A Series.
Features: Cost effective • Gold alloy
contacts • Epoxy-sealed cap andterminals • Wide variety of terminals• Only a stepped aluminum cap - 15’
spacing, 1” collector for 30’ spacing, anda 1.5” collector for 50’ spacing. Collector
brackets available per UL
Benefits: Gold alloy contacts for low
voltage fire alarm, smoke detector andpotential security device applications.
Small size allows enhanced response totemperature changes. Epoxy sealed forextended 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.

2450CM Series.

2450HR Series.

Features: Cost effective • Rivet sleeve
construction • Wide variety of mounting
brackets and terminals

Features: Cost effective • Rivet sleeve
construction • Factory calibrated • Widevariety of mounting brackets and terminals

Benefits: Small size allows enhanced
response to temperature changes.
Potential for use in high current HVAC,
appliance, hot water heater and officeautomation applications.

Benefits: 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.

2450CMG Series.
Features: Cost effective • Gold alloy
contacts • Rivet sleeve construction• Wide variety of mounting brackets andterminals
Benefits: 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.

2450HRG Series.
Features: Cost effective • Gold alloy
contacts • Rivet sleeve construction• Factory calibrated • Wide variety ofmounting brackets and terminals
Benefits: Small product size allows
enhanced response to temperaturechanges. 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.
www.honeywell.com/sensing
continued on page 17

Thermostats Line Guide

Well over 5,000 reasons tochoose Honeywell.
With over 5,000 quality
components in our thermostat
line, we meet any domestic
or international need forcommercial or precision snapaction solutions.
Commercial thermostats:You’ll find Honeywell quality
in a wide array of small
and major appliances,automotive applications, officecopy machines and HVAC
equipment, plus heat andsmoke detectors. Whether
it’s military or aerospaceindustries, or your officebuilding, each Honeywell S&C
thermostat can be designed
to offer the performance andreliability you demand, and theservice 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 moststringent environmental
conditions for dielectricstrength, moisture, resistance,
vibration, shock and hermetic
seal. And S&C offers custompackaged thermostats forcomplete application flexibility.

2

Commercial
Thermostats
2450A Series

2450CM Series

2450CMG Series

Useheat detection

high current

low voltage

Reset typeautomatic

manualmanualHousing material

phenolic, epoxy seal cap
and terminals

ceramic

ceramic

Functional property

open or close on rise

open on rise

open on rise

Amperage

3A

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 crosspoint

silver/nickel alloy

WE-1 gold alloy crosspoint

Approvals

UL

UL, CSA, VDE

UL, CSA, VDE

2450HR Series

2450HRG Series

2450R Series

Usehigh current

low current

high current

Reset typeautomatic

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 crosspoint

silver/nickel alloy

Approvals

UL, CSAUL, CSAUL, CSA

Commercial
Thermostats

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Commercial
Thermostats
2450RC Series

2450RCG Series

2450RG Series

Usehigh current

low voltage

low voltage

Reset typeautomatic

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, CSA2455R Series

2455RA Series

2455RVB Series

Usehigh current

heat detection

high current

Reset typeautomatic

automatic

automatic

Housing material

phenolic

phenolic, epoxy seal cap and terminals

ceramic, epoxy overmold

Functional property

open or close on riseclose on rise

open or close on rise

Amperage

15 A/10 A

3A

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

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3Thermostats Line Guide

Commercial
Thermostats
2455RC Series

2455RG Series

2455RM Series

Usehigh current

low voltage

high current

Reset typeautomatic

automatic

manualHousing 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

Precision
Thermostats
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

4

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Precision
Thermostats
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 withglass-to-metal seal at terminal junction

steel housing hermetically sealed withglass-to-metal seal at terminal junction

steel housing hermetically sealed withglass-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

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5Thermostats Line Guide

Precision
Thermostats
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 hermeticallysealed with glass-to-metal
seal at terminal junction

steel housing hermeticallysealed with glass-to-metal
seal at terminal junction

steel housing hermeticallysealed with glass-to-metal sealat terminal junction

steel housing hermeticallysealed with glass-to-metal sealat 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 CaseMIL-STD-202, Method 301;
1250 Vac 60 Hz - Terminal
to CaseMIL-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
appliedMIL-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. CMIL-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

6

www.honeywell.com/sensing

2450R Series.
Features: Cost effective • Rivet sleeve
construction • Low profile • Wide variety ofmounting brackets and terminals
Benefits: Low profile and small size
allows enhanced response to temperaturechanges. Factory calibrated to customer’s
specification. Potential for use inhigh current HVAC, major appliance,
automotive, heat/smoke detector and copy
machine applications.

2450RC Series.
Features: Cost effective • Rivet sleeve
construction • Low profile • Wide variety ofmounting brackets and terminals
Benefits: Low profile and small size
allows enhanced response to temperaturechanges. Potential for use in high current
HVAC, power supplies, decorative fireplaces, glue gun applications.

2450RCG Series.
Features: Cost effective • Gold alloy
contacts • Rivet sleeve construction • Low
profile • Wide variety of mounting brackets
and terminals
Benefits: Low profile and small productsize allows enhanced response totemperature changes. Gold alloy contacts
allow for potential use for low voltage
HVAC, power supply, decorative fireplaces and glue gun applications.

2450RG Series.
Features: Cost effective • Gold alloy
contacts • Rivet sleeve construction• Wide variety of mounting brackets andterminals
Benefits: Small product size allows
enhanced response to temperaturechanges. 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 andterminals

Benefits: Small product size allows
enhanced response to temperaturechanges. Factory calibrated to customer’s
specification. Potential for use in highcurrent HVAC, automotive, copy machine,
major appliance and heat/smoke detection
applications.

Benefits: Small product size allows
enhanced response to temperaturechanges. 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 applianceapplications.

2455RA Series.
Features: Cost effective • Gold alloy
contacts • Epoxy-sealed cap andterminals • 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
Benefits: Small size allows enhanced
response to temperature changes.
Epoxy sealed for long life. Available withor without heat collectors. Gold alloy
contacts allow for potential use for low
voltage fire alarm, smoke detector andsecurity device applications.

2455RBV Series.
Features: Cost effective • Epoxy overmold• Rivet sleeve construction • Dust-freehousing • Factory calibrated • Widevariety of mounting brackets and terminals
Benefits: Epoxy overmolded construction
provides electrical insulation. Small size
allows enhanced response to temperaturechanges. Factory calibrated to customer’s
specification. Potential for use in highcurrent automotive and industrial
equipment applications.

2455RC Series.
Features: Cost effective • Rivet sleeve
construction • High profile • Wide variety
of mounting brackets and terminals
Benefits: Small product size allows
enhanced response to temperaturechanges. Potential for use in high current
HVAC, power supply, spa and officeautomation applications.

2455RG Series.
Features: Cost effective • Gold alloy
contacts • Rivet sleeve construction• High profile • Factory calibrated • Widevariety of mounting brackets and terminals

2455RM Series.
Features: Cost effective • Rivet sleeve
construction • Factory calibrated • Widevariety of mounting brackets and terminals
Benefits: Small size allows enhanced
response to temperature changes. Usedin high current. Factory calibrated tocustomer’s specification. Potential uses
include HVAC, power supply and officeautomation.

Precision Thermostats
3000 Series.
Features: Custom packaging• Hermetically sealed • Tight tolerances• Tight differentials • Customized probe
length • Hermetic connector or potted
constructions
Benefits: Internal and external design
options meet exacting customer
requirements. All-welded, hermeticallysealed stainless steel construction forpotential 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 • Widevariety of mounting brackets and terminals
Benefits: 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.

www.honeywell.com/sensing

73100U Series.

3150 Series.

3156 Series.

Features: UL approved • Hermeticallysealed • Tight tolerances • Tight
differentials • Pre-set and tamper proof• SPST contacts • Wide variety ofmounting brackets and terminals

Features: Low silhouette and compact
design • Hermetically sealed • Tight
tolerances • Tight differentials • Pre-set
and tamper proof • SPST contacts • Widevariety of mounting brackets and terminals

Benefits: UL approved products designed
to meet or exceed critical commercial
and industrial specifications. Temperature
calibrations pre-set at factory. Each
unit 100 % thermally and mechanicallyinspected. Potential applications include
computers, medical electronics, power
supplies, industrial controls, infotech, andtest equipment.

Benefits: Low silhouette and compact
design may be well suited for potential
applications including industrial, foodservice, telecom, medical, and infotech
where space is at a premium. Temperature
calibrations pre-set at factory. Each
unit 100% thermally and mechanicallyinspected.

Features: Low silhouette and compact
design • Gold alloy contacts• Hermetically sealed • Tight tolerances• Tight differentials • Pre-set and tamper
proof • SPST contacts • Wide variety ofmounting brackets and terminals

3153 Series.
3106 Series.
Features: Gold alloy contacts• Hermetically sealed • Tight tolerances• Tight differentials • Pre-set and tamper
proof • SPST contacts • Wide variety ofmounting brackets and terminals
Benefits: 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.

8

www.honeywell.com/sensing

Features: Low silhouette and compact
design • Hermetically sealed • Tight
tolerances • Tight differentials • Pre-set
and tamper proof • SPST contacts • Widevariety of mounting brackets and terminals
Benefits: Acceptance testing performedin accordance to Mil-PRF-24236, Table
III. Temperature calibrations pre-set atfactory. Each unit 100% thermally andmechanically inspected. Low silhouetteand compact design may be well suitedfor potential military and commercial
aircraft applications where space is at apremium.

Benefits: Gold alloy contacts for potential
low voltage applications. Temperature
calibrations pre-set at factory. Each
unit 100% thermally and mechanicallyinspected. Low silhouette and compact
design may be well suited for potential
applications including industrial, foodservice, 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 • Widevariety of mounting brackets and terminals
available
Benefits: Temperature calibrations pre-set
at factory. Each unit 100% thermally andmechanically inspected. Desinged tomeet or exceed military and aerospace
specifications for spaceflight use,
including temperature stability, shock,vibration and cleanliness.

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 yourorder acknowledgement or consult yourlocal 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 thoseof merchantability and fitness for aparticular purpose. In no event shall
Honeywell be liable for consequential,
special, or indirect damages.

While we provide application assistancepersonally, through our literature andthe Honeywell web site, it is up to thecustomer to determine the suitability of the
product in the application.
Specifications may change without notice.
The information we supply is believed tobe accurate and reliable as of this printing.
However, we assume no responsibility for
its use.
For more information about Sensing andControl products, visit www.honeywell.
com/sensing or call +1-815-235-6847
Email inquiries to info.sc@honeywell.com

WARNINGPERSONAL INJURY• DO NOT USE these products assafety or emergency stop devices
or in any other application where
failure of the product could result inpersonal injury.
Failure to comply with these
instructions could result in death orserious injury.

WARNINGMISUSE OF DOCUMENTATION• The information presented in thiscatalogue is for reference only. DO
NOT USE this document as productinstallation information.
• Complete installation, operation andmaintenance information is provided
in the instructions supplied with eachproduct.
Failure to comply with these
instructions could result in death orserious 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.

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9Notes10

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