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Thermostats - Commercial
THERMOST ATS - COMMERCIAL
Commercial thermostats include products for use in a wide array of small
and major appliances, automotive applications, office copy machines,
heat and smoke detectors and HVAC equipment. These snap-action
thermostats include automatic or manual reset options, phenolic or
ceramic housings, and a variety of mounting brackets and terminal
options.
NOTE: The products in this section do not follow the “how to use this
catalogue” instructions provided in the catalogue introduction. Specific
reference numbers are not given due to their custom nature. Please
contact your local Honeywell sales office for ordering information.
2450R/2450HR/2455R Series Phenolic
Automatic Reset Thermostats
A temperature-sensitive bimetal disc, electrically isolated from the switch,
actuates the normally closed contacts. The contacts open when the
surface or ambient temperatures increase to the operating snap point of
the calibrated disc. Response to temperature changes is extremely rapid
due to the inherently low mass of the disc and the small size of the
product. These products are factory calibrated to the customer’s
specification.
Reset type: Automatic
Amperage capacity: 15 A resistive max.
Housing material: Phenolic
Operating temperature range: 0 °C to 150 °C [32 °F to 302 °F]
Environmental exposure range: 0 °C to 177 °C [32 °F to 350 °F]
2450R
14,43 DIA.
[0.568]
16,0 DIA.
[0.630]
0,51
[0.020]
9,63
[0.379]
2450HR
14,43 DIA.
[0.568]
16,0 DIA.
[0.630]
SERIES NAME
2450HR Phenolic Automatic Reset Thermostat
2455R
14,43 DIA.
[0.568]
16,0 DIA.
[0.630]
6,73
[0.265]
2,36 [0.093] DIA.
1,57 [0.062] DEEP
[0.486]
9,12
[0.359]
0,51
[0.020]
12,34
13,94
[0.549]
11,91
[0.469]
SERIES NAME
2450R Phenolic Automatic Reset Thermostat
SERIES NAME
2455R Phenolic Automatic Reset Thermostat
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THERMOSTATS - COMMERCIAL
2450RC/2450RCH/2455RC Series
Ceramic Automatic Reset Thermostats
A temperature-sensitive bimetal disc, electrically isolated from the switch,
actuates the normally closed contacts. The contacts open when the
surface or ambient temperatures increase to the operating snap point of
the calibrated disc. Response to temperature changes is extremely rapid
due to the inherently low mass of the disc and the small size of the
product.
Reset type: Automatic
Amperage capacity: 15 A resistive max.
Housing material: Ceramic
Operating temperature range: 0 °C to 260 °C [32 °F to 500 °F]
Environmental exposure range: –20 °C to 287 °C [0 °F to 550 °F]
2450RC
16,00
[0.379]
9,63
[0.379]
0,51
[0.020]
SERIES NAME
2450RC Ceramic Automatic Reset Thermostat
2450CM/2455RM Series Ceramic and
Phenolic Manual Reset Thermostats
A temperature-sensitive bimetal disc, electrically isolated from the switch,
actuates the normally closed contacts. The contacts open when the
surface or ambient temperatures increase to the operating snap point of
the calibrated disc. The circuit will stay open above room ambient
temperature until the manual reset button is pressed. Response to
temperature changes is extremely rapid due to the inherently low mass
of the disc and the small size of the product.
Reset type: Manual
Amperage capacity: 15 A resistive max.
Housing material: Ceramic or phenolic
Operating temperature range: 52 °C to 232 °C [125 °F to 450 °F] (ceramic)
Environmental exposure range: 10 °C to 260 °C [50 °F to 500 °F] (ceramic)
2450CM
14,43 DIA.
[0.568]
52 °C to 150 °C [125 °F to 302 °F] (phenolic)
10 °C to 177 °C [50 °F to 350 °F] (phenolic)
1,04 [0.041] MAX TRAVEL OF
RESET BUTTON
ON CONTACT OPENING
14,48
12,90
[0.570]
[0.508]
9,55
9,04
[0.376]
[0.356]
16,0 DIA.
[0.630]
0,51
[0.020]
15,98
[0.629]
2450RCH
14,43 DIA.
[0.568]
16,0 DIA.
[0.630]
SERIES NAME
2450RCH Ceramic Automatic Reset Thermostat
2455RC
14,43 DIA.
[0.568]
16,0 DIA.
[0.630]
SERIES NAME
2455RC Ceramic Automatic Reset Thermostat
2,36 [0.093] DIA.
1,57 [0.062] DEEP
9,04
[0.356]
ENCLOSED DISK
0,51
[0.020]
12,90
[0.508]
11,91
[0.469]
14,48
[0.570]
SERIES NAME
2450CM Ceramic Manual Reset Thermostat
2455RM
2,77 DIA. RESET
[0.109] BUTTON
14,43 DIA.
[0.568]
16,0 DIA.
[0.630]
SERIES NAME
2455RM Phenolic Manual Reset Thermostat
1,04 [0.041] MAX TRAVEL
OF RESET BUTTON ON
CONTACT OPENING
15,88 ON CONTACT
[0.625] CLOSING
11,91
[0.469]
0,51
[0.020]
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THERMOSTATS - COMMERCIAL
2450A/2455A Series Heat Detection
Thermostats
The gold contacts open or close on a temperature rise of 47 °C to 107 °C
°
F to 225 °F].
[117
Reset type: Automatic
Amperage capacity: 15 A resistive max.
Housing material: Phenolic, epoxy-sealed cap and terminal
Operating temperature range: 47
Environmental exposure range: 0 °C to 150 °C [32 °F to 302 ° F]
2450A
SERIES NAME
2450A Heat Detection Thermostat
2455A
SERIES NAME
2455A Heat Detection Thermostat
°
C to 107 °C [117 °F to 225 °F]
9,63
[0.379]
0,51
[0.020]
11,91
[0.469]
0,51
[0.020]
2450R/2450RCH/2455R/2455RC Series
“One-shot” ½ in Thermostats
Products are designed for high limit applications where automatic reset
is not desired.
Reset type: None
Amperage capacity: 15 A resistive max.
Housing material: ceramic or phenolic
Operating temperature range: 52
Environmental exposure range: 18 °C to 316 °C [0 °F to 600 °F] (ceramic)
2450R
14,43 DIA.
[0.568]
SERIES NAME
2450R Phenolic “One-shot” ½ in Thermostat
2450RCH
14,43 DIA.
[0.568]
°
C to 260 °C [125 °F to 500 °F] (ceramic)
52 °C to 150 °C [125 °F to 302 °F] (phenolic)
18 °C to 177 °C [0 °F to 350 °F] (phenolic)
9,63
[0.379]
16,0 DIA.
[0.630]
2,36 [0.093] DIA.
1,57 [0.062] DEEP
0,51
[0.020]
9,04
[0.356]
12,90
[0.508]
14,48
[0.570]
2455RBV Series Overmolded Automatic
Reset Thermostats
A temperature-sensitive bimetal disc, electrically isolated from the switch,
actuates the normally closed contacts. The contacts open when the
surface or ambient temperatures increase to the operating snap point of
the calibrated disc. Response to temperature changes is extremely rapid
due to the inherently low mass of the disc and the small size of the
product.
Reset type: Automatic
Amperage capacity: 15 A resistive max.
Housing material: Ceramic or phenolic, epoxy overmold
Operating temperature range: -12 °C to 105 °C [10 °F to 221 °F]
Environmental exposure range: -18 °C to 121 °C [0 °F to 250 °F]
2455RBV
WIRE GAGE AND
INSULATION AS
REQUIRED
17,27 DIA.
[0.680]
AS REQUIRED
AS REQUIRED
18,54
[0.730]
0,51
[0.020]
16,0 DIA.
[0.630]
SERIES NAME
2450RCH Ceramic “One-shot” ½ in Thermostat
2455R
14,43 DIA.
[0.568]
16,0 DIA.
[0.630]
SERIES NAME
2455R Phenolic “One-shot” ½ in Thermostat
2455RC
14,43 DIA.
[0.568]
16,0 DIA.
[0.630]
ENCLOSED DISK
11,91
[0.469]
0,51
[0.020]
11,91
[0.469]
0,51
[0.020]
SERIES NAME
2455RBV Overmolded Automatic Reset Thermostat
SERIES NAME
2455RC Ceramic “One-shot” ½ in Thermostat
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THERMOSTATS - COMMERCIAL
2450R Series Annular Ring Cap
Automatic Reset Thermostats
A temperature-sensitive bimetal disc, electrically isolated from the switch,
actuates the normally closed contacts. The contacts open when the
surface or ambient temperatures increase to the operating snap point of
the calibrated disc. Response to temperature changes is extremely rapid
due to the inherently low mass of the disc and the small size of the
product.
Reset type: Automatic
Amperage capacity: 15 A resistive, 12 Vdc
Housing material: Phenolic, can be partially or totally sealed
Operating temperature range: -10
Environmental exposure range: -40 °C to 130 °C [-40 °F to 266 °F]
Life Cycle Capability: 300 K at 12 Vdc, 10 A
Low Temperature Differential: Down to 8 °C [46 °F]
Switch Temperature Tolerance: ±3 °C
14,43 DIA.
[0.568]
16,0 DIA.
[0.630]
against water ingress
°
C to 55 °C [14 °F to 131 °F]
9,63
[0.379]
0,51
[0.020]
2450R Series Fully Sealed Thermostats
A temperature-sensitive bimetal disc, electrically isolated from the switch,
actuates the normally closed contacts. The contacts open when the
surface or ambient temperatures increase to the operating snap point of
the calibrated disc. Response to temperature changes is extremely rapid
due to the inherently low mass of the disc and the small size of the
product.
Reset type: Automatic
Amperage capacity: 15 A resistive, 12 Vdc
Housing material: Phenolic housing, aluminium cap totally
Operating temperature range: -10
Environmental exposure range: -40 °C to 130 °C [-40 °F to 266 °F]
Life cycle capability: 300 K at 12 Vdc, 10 A
Low temperature differential: Down to 8 °C [46 °F]
Switch temperature tolerance: ±3 °C
16,1 MAX.
[0.63]
encapsulated in water resistant epoxy
°
C to 55 °C [14 °F to 131 °F]
11,5
[0.45]
SERIES NAME
2450R Phenolic Annular Ring Cap Automatic Reset Thermostat
2450R/2455R Series Protected
Thermostats
A temperature-sensitive bimetal disc, electrically isolated from the switch,
actuates the normally closed contacts. The contacts open when the
surface or ambient temperatures increase to the operating snap point of
the calibrated disc. Basic thermostat is protected from the environment
by sealing it in a metal housing or encapsulating it in epoxy.
Reset type: Automatic
Amperage capacity: 15 A resistive, 12 Vdc
Housing material: Brass, aluminium, stainless steel and epoxy
Operating temperature range: 15 °C to 130 °C [59 °F to 266 °F]
Environmental exposure range: -40 °C to 155 °C [-40 °F to 311 °F]
SERIES NAME
2450R Fully Sealed Thermostat
SERIES NAME
2450R Protected Thermostat
2455R Protected Thermostat
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Bimetal Thermostats - Sensing and Control - Honeywell Automation and Control Solutions
Temperature Sensors
Thermal Cutoffs
Thermistors & Probes
Thermostats
>Redi-Temp
Subminiature 3600
Series
>Redi-Temp Series 3100
SPST Hermetic Series
>Redi-Temp 3455 RC 15
AMP High Temp. Series
>Bimetal Precision &
Commercial Thermostats
Products & Applications
Thermal Products Glossary
Contact Us
Request Free Literature
Bimetal Thermostats
The Honeywell bimetal thermostat product line
consists of Single-Pole, Single-Throw (SPST)
hermetic and non-hermetic thermostats, including
low-silhouette, logic level, auto reset, manual
reset, one-shot, and subminiature thermostats
and thermal switches. These products are also
defined by their ability to reliably maintain
precision temperature tolerances or high
amperage electrical loads. They provide temperature control and overtemperature
protection for the appliance, office automation, industrial, commercial aircraft and
medical equipment industries.
Bimetal thermostats are snap-action devices designed to operate in extreme
conditions, such as exposure to hazardous substances, dust particles and liquid
immersion. Contacts are thermally and electrically isolated. Dust-proof performance
is achieved by using a ceramic or phenolic base protected by a metal enclosure. A
variety of custom configurations are available which provide environmental
protection.
Select a product from one of the following bimetal categories:
Precision Thermostats
Commercial Thermostats
Precision Thermostats
Hermetic Thermostats
Series Features Applications
3100
Tight temperature tolerances
and differentials available
6 A 120 Vac rating
Environmental exposure -62 °
C to 288 °C [-80 °F to 550 °F]
Industrial glue guns
Blood analyzers
Battery pack heater
3106
Gold alloy cross-point
contacts for use in logic level
circuits
Tight temperature tolerances
and differentials available
Solid state control backup
3150
Low profile 7,7 mm [0.305 in]
maximum design height
6 A 120Vac rating
Tight temperature tolerances
and differentials available
Commercial aircraft
avionics
Power supplies
Copy machine overheat
protection
3156
Gold alloy cross-point
contacts for use in logic level
circuits
Low profile 7,7 mm [0.305 in]
maximum design height
UL recognized and CSA
certified
Tight temperature tolerances
and differentials available
Dry circuit applications
where space is limited
Custom Packaged Thermostats
Series Features Applications
Search the Sensing and
Control Interactive
Catalog.
Search for product and
support information.
Advanced Search
All Sensing & Control
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Bimetal Thermostats - Sensing and Control - Honeywell Automation and Control Solutions
3000 Customized probe length
Custom probe materials
Many termination/connector
options
Heater control
Aircraft bleed air Duct
sensing
Liquid bath control
Hydraulic oil temperature
control
Non-Hermetic Thermostats
Series Features Applications
3001, 3004
Low profile and lightweight
(Model 3001)
European approved (3004
only)
Tight temperature tolerances
and differentials available
Computers
Office equipment
Blood analyzers
High Amperage Thermostats 15 A
Series Features Applications
3450, 3455R,
3455RBV
Electrical rating to 15 A 120
Vac resistive
UL recognized, CSA certified
and European approved
Single-pole, single-throw
Environmental exposure for
the 3450 & 3455R -18 °C to
177 °C [0 °F to 350 °F]
Environmental exposure for
the 3455RBV -18 °C to 121 °
C [0 °F to 250 °F]
Power supplies
Communications
equipment
Medical equipment
Computers (where high
amperage loads are
present)
3450RC,
3455RC
High temperature
environmental exposure -18 °
C to 288 °C [0 °F to 550 °F]
Electrical rating to 15 A 120
Vac resistive
UL recognized, CSA certified
and European approved
Single-pole, single-throw
Communications
equipment
Computers (where high
amperage loads are
present)
Medical equipment
Appliances
Manual Reset Thermostats
Series Features Applications
3455RM,
3450CM
Manually resettable operation
(reset button)
Electrical rating to 15 A 120
Vac resistive
UL recognized and CSA
certified
Environmental exposure 10 °
C to 177 °C [50 °F to 350 F]
Where automatic reset is
not preferred
Commercial Thermostats
Phenolic Thermostats
Series Features Applications
2450R,
2450HR,
2455R
15 A, 120 Vac; 10 A, 240 Vac
UL recognized, CSA certified
and European approved
Contacts are available for mV
and mA applications
Environmental exposure 0 °C
to 177 °C [32 °F to 350 °F]
Copy machines
Medical equipment
Power supplies
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Bimetal Thermostats - Sensing and Control - Honeywell Automation and Control Solutions
Ceramic Thermostats
Series Features Applications
2450RC,
2450RCH,
2455RC
15 A 120 Vac; 10 A 240 Vac
UL recognized, CSA certified
and European approved
Contacts are available for mV
and mA applications
Environmental Exposure 0 °C
to 177 °C [32 °F to 350 °F]
Office automation
products
Table-top applications
Industrial equipment
Appliances
Manual Reset Thermostats
Series Features Applications
2455RM,
2450CM
15 A, 120 Vac; 10 A, 240 Vac
UL recognized, CSA certified
and European approved
Environmental Exposure for
2455RM -18 °C to 121 °C [0 °
F to 250 °F]
Environmental exposure for
3450CM 10 °C to 260 °C [50 °
F to 500 °F]
Office automation
products
Medical equipment
Overmolded Automatic Reset Thermostats
Series Features Applications
2455RBV
15 A ,120 Vac; 8.3 A, 240 Vac
UL recognized, CSA certified
and European approved
Environmental exposure -18 °
C to 121 °C [0 °F to 250 °F]
Industrial equipment
Heat Detection Thermostats
Series Features Applications
2450A,
2455RA
UL recognized
Environmental exposure 0 °C
to 150 °C [32 °F to 302 °F]
Heat detection
One-shot Thermostats
Series Features Applications
2450R,
2455R,
2450RC,
2455RC
15 A, 120 Vac; 10 A, 240 Vac
UL recognized, CSA certified
and European approved
Environmental exposure for
2450R & 2455R 0 °C to 177 °
C [32 °F to 350 °F]
Environmental exposure for
2450RC & 2455RC 0 °C to
288 °C [32 °F to 550 °F]
Automation equipment
Tabletop appliances
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‘Permanent Stock’ of Thermostats Type 2455R
• Functions: Open on Rising Temperature, and
Close on Rising Temperature
• Standard Mounting Bracket: B 203 S
• Terminals: horizontal T 146
• Operating Temperatures in 10° C Steps.
• Up to 15A and up to 250V AC
• Silver contact system
Part Number Function
Open Close
°C +/-K °C +/-K
2455R- 100-84 30 3 15 4
2455R- 100-72 40 3 25 6
2455R- 100-73 50 3 35 6
2455R- 100-85 60 3 45 6
2455R- 100-74 70 3 55 6
2455R- 100-75 80 3 65 6
2455R- 100-76 90 3 75 6
2455R- 100-77 100 4 80 7
2455R- 100-86 110 4 90 7
2455R- 100-98 120 4 98 6
2455R- 100-88 130 4 110 8
2455R- 100-89 140 4 115 8
2455RC- 9100-373 150 7 120 8
Close Open
°C +/-K °C +/-K
2455R- 100-78 50 3 35 6
2455R- 100-79 60 3 45 6
2455R- 100-92 80 3 65 6
2455R- 100-93 90 3 75 6
2455R- 100-94 100 4 80 7
2455R- 100-95 120 4 100 7
2455R- 100-96 140 4 115 8
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