THERMOSTATS - COMMERCIAL
Thermostats - 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
2450HR
6,73
[0.265]
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:
Amperage capacity:
Housing material:
Operating temperature range:
Environmental exposure range:
Automatic
15 A resistive max.
Phenolic
0 °C to 150 °C [32 °F to 302 °F]
0 °C to 177 °C [32 °F to 350 °F]
2450R
2,36 [0.093] DIA.
1,57 [0.062] DEEP
13,94
[0.549]
12,34
9,12 [0.486]
[0.359]
14,43 DIA.
[0.568]
16,0 DIA.
[0.630]
SERIES NAME
2450HR Phenolic Automatic Reset Thermostat
2455R
14,43 DIA.
[0.568]
9,63
[0.379]
16,0 DIA.
[0.630]
14,43 DIA.
[0.568]
11,91
[0.469]
0,51
[0.020]
16,0 DIA.
[0.630]
SERIES NAME
2450R Phenolic Automatic Reset Thermostat
0,51
[0.020]
SERIES NAME
2455R Phenolic Automatic Reset Thermostat
www.honeywell.com/sensing
27
THERMOSTATS - COMMERCIAL
2450RC/2450RCH/2455RC Series
Ceramic Automatic Reset Thermostats
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. Response to temperature changes is extremely rapid
due to the inherently low mass of the disc and the small size of the
product.
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:
Amperage capacity:
Housing material:
Operating temperature range:
Environmental exposure range:
Reset type:
Amperage capacity:
Housing material:
Operating temperature range:
Automatic
15 A resistive max.
Ceramic
0 °C to 260 °C [32 °F to 500 °F]
–20 °C to 287 °C [0 °F to 550 °F]
2450RC
16,00
[0.379]
Manual
15 A resistive max.
Ceramic or phenolic
52 °C to 232 °C [125 °F to 450 °F] (ceramic)
52 °C to 150 °C [125 °F to 302 °F] (phenolic)
Environmental exposure range: 10 °C to 260 °C [50 °F to 500 °F] (ceramic)
10 °C to 177 °C [50 °F to 350 °F] (phenolic)
2450CM
1,04 [0.041] MAX TRAVEL OF
RESET BUTTON
ON CONTACT OPENING
15,98
[0.629]
14,48
12,90 [0.570]
[0.508]
9,63
[0.379]
14,43 DIA.
[0.568]
9,55
9,04 [0.376]
[0.356]
0,51
[0.020]
16,0 DIA.
[0.630]
SERIES NAME
2450RC Ceramic Automatic Reset Thermostat
0,51
[0.020]
SERIES NAME
2450CM Ceramic Manual Reset Thermostat
2450RCH
2455RM
2,36 [0.093] DIA.
1,57 [0.062] DEEP
14,48
[0.570]
12,90
9,04 [0.508]
[0.356]
14,43 DIA.
[0.568]
16,0 DIA.
[0.630]
ENCLOSED DISK
1,04 [0.041] MAX TRAVEL
OF RESET BUTTON ON
CONTACT OPENING
2,77 DIA. RESET
[0.109] BUTTON
15,88 ON CONTACT
[0.625] CLOSING
14,43 DIA.
[0.568]
SERIES NAME
2450RCH Ceramic Automatic Reset Thermostat
11,91
[0.469]
16,0 DIA.
[0.630]
2455RC
SERIES NAME
2455RM Phenolic Manual Reset Thermostat
14,43 DIA.
[0.568]
11,91
[0.469]
16,0 DIA.
[0.630]
0,51
[0.020]
SERIES NAME
2455RC Ceramic Automatic Reset Thermostat
28
www.honeywell.com/sensing
0,51
[0.020]
THERMOSTATS - COMMERCIAL
2450A/2455A Series Heat Detection
Thermostats
2450R/2450RCH/2455R/2455RC Series
“One-shot” ½ in Thermostats
The gold contacts open or close on a temperature rise of 47 °C to 107 °C
[117 °F to 225 °F].
Products are designed for high limit applications where automatic reset
is not desired.
Reset type:
Automatic
Amperage capacity:
15 A resistive max.
Housing material:
Phenolic, epoxy-sealed cap and terminal
Operating temperature range:
47 °C to 107 °C [117 °F to 225 °F]
Environmental exposure range:
0 °C to 150 °C [32 °F to 302 ° F]
Reset type:
Amperage capacity:
Housing material:
Operating temperature range:
2450A
None
15 A resistive max.
ceramic or phenolic
52 °C to 260 °C [125 °F to 500 °F] (ceramic)
52 °C to 150 °C [125 °F to 302 °F] (phenolic)
Environmental exposure range:
18 °C to 316 °C [0 °F to 600 °F] (ceramic)
18 °C to 177 °C [0 °F to 350 °F] (phenolic)
2450R
9,63
[0.379]
14,43 DIA.
[0.568]
9,63
[0.379]
0,51
[0.020]
16,0 DIA.
[0.630]
SERIES NAME
2450A Heat Detection Thermostat
2455A
0,51
[0.020]
SERIES NAME
2450R Phenolic “One-shot” ½ in Thermostat
11,91
[0.469]
2450RCH
2,36 [0.093] DIA.
1,57 [0.062] DEEP
0,51
[0.020]
SERIES NAME
2455A Heat Detection Thermostat
14,48
[0.570]
12,90
9,04 [0.508]
[0.356]
14,43 DIA.
[0.568]
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:
Amperage capacity:
Housing material:
Operating temperature range:
Environmental exposure range:
Automatic
15 A resistive max.
Ceramic or phenolic, epoxy overmold
-12 °C to 105 °C [10 °F to 221 °F]
-18 °C to 121 °C [0 °F to 250 °F]
16,0 DIA.
[0.630]
ENCLOSED DISK
SERIES NAME
2450RCH Ceramic “One-shot” ½ in Thermostat
2455R
14,43 DIA.
[0.568]
11,91
[0.469]
16,0 DIA.
[0.630]
0,51
[0.020]
2455RBV
AS REQUIRED
SERIES NAME
2455R Phenolic “One-shot” ½ in Thermostat
WIRE GAGE AND
INSULATION AS
REQUIRED
AS REQUIRED
18,54
[0.730]
2455RC
14,43 DIA.
[0.568]
11,91
[0.469]
16,0 DIA.
[0.630]
17,27 DIA.
[0.680]
SERIES NAME
2455RBV Overmolded Automatic Reset Thermostat
0,51
[0.020]
0,51
[0.020]
SERIES NAME
2455RC Ceramic “One-shot” ½ in Thermostat
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29
THERMOSTATS - COMMERCIAL
2450R Series Annular Ring Cap
Automatic Reset Thermostats
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:
Amperage capacity:
Housing material:
Automatic
15 A resistive, 12 Vdc
Phenolic, can be partially or totally sealed
against water ingress
Operating temperature range:
-10 °C to 55 °C [14 °F to 131 °F]
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
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:
Amperage capacity:
Housing material:
Operating temperature range:
Environmental exposure range:
Life cycle capability:
Low temperature differential:
Switch temperature tolerance:
Automatic
15 A resistive, 12 Vdc
Phenolic housing, aluminium cap totally
encapsulated in water resistant epoxy
-10 °C to 55 °C [14 °F to 131 °F]
-40 °C to 130 °C [-40 °F to 266 °F]
300 K at 12 Vdc, 10 A
Down to 8 °C [46 °F]
±3 °C
16,1 MAX.
[0.63]
14,43 DIA.
[0.568]
9,63
[0.379]
16,0 DIA.
[0.630]
11,5
[0.45]
0,51
[0.020]
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:
Amperage capacity:
Housing material:
Operating temperature range:
Environmental exposure range:
SERIES NAME
2450R Fully Sealed Thermostat
Automatic
15 A resistive, 12 Vdc
Brass, aluminium, stainless steel and epoxy
15 °C to 130 °C [59 °F to 266 °F]
-40 °C to 155 °C [-40 °F to 311 °F]
SERIES NAME
2450R Protected Thermostat
2455R Protected Thermostat
30
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Bimetal Thermostats - Sensing and Control - Honeywell Automation and Control Solutions
Temperature Sensors
Bimetal Thermostats
Thermal Cutoffs
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.
Search the Sensing and
Control Interactive
Catalog.
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.
All Sensing & Control
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
Select a product from one of the following bimetal categories:
Products & Applications
Thermal Products Glossary
Precision Thermostats
Commercial Thermostats
Contact Us
Request Free Literature
Precision Thermostats
Hermetic Thermostats
Series
3100
Features
Applications
Tight temperature tolerances
and differentials available
6 A 120 Vac rating
Industrial glue guns
Environmental exposure -62 °
C to 288 °C [-80 °F to 550 °F]
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
Commercial aircraft
avionics
Power supplies
Tight temperature tolerances
and differentials available
Copy machine overheat
protection
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
3156
Blood analyzers
Custom Packaged Thermostats
Series
Features
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Applications
Search for product and
support information.
Advanced Search
Bimetal Thermostats - Sensing and Control - Honeywell Automation and Control Solutions
3000
Customized probe length
Heater control
Custom probe materials
Aircraft bleed air Duct
sensing
Liquid bath control
Many termination/connector
options
Hydraulic oil temperature
control
Non-Hermetic Thermostats
Series
3001, 3004
Features
Low profile and lightweight
(Model 3001)
European approved (3004
only)
Tight temperature tolerances
and differentials available
Applications
Computers
Office equipment
Blood analyzers
High Amperage Thermostats 15 A
Series
3450, 3455R,
3455RBV
3450RC,
3455RC
Features
Applications
Electrical rating to 15 A 120
Vac resistive
UL recognized, CSA certified
and European approved
Single-pole, single-throw
Power supplies
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]
Computers (where high
amperage loads are
present)
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
Communications
equipment
Medical equipment
Appliances
Manual Reset Thermostats
Series
3455RM,
3450CM
Features
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]
Applications
Where automatic reset is
not preferred
Commercial Thermostats
Phenolic Thermostats
Series
2450R,
2450HR,
2455R
Features
Applications
15 A, 120 Vac; 10 A, 240 Vac
Copy machines
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]
Medical equipment
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Power supplies
Bimetal Thermostats - Sensing and Control - Honeywell Automation and Control Solutions
Ceramic Thermostats
Series
2450RC,
2450RCH,
2455RC
Features
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]
Applications
Office automation
products
Table-top applications
Industrial equipment
Appliances
Manual Reset Thermostats
Series
2455RM,
2450CM
Features
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]
Applications
Office automation
products
Medical equipment
Overmolded Automatic Reset Thermostats
Series
2455RBV
Features
15 A ,120 Vac; 8.3 A, 240 Vac
Applications
Industrial equipment
UL recognized, CSA certified
and European approved
Environmental exposure -18 °
C to 121 °C [0 °F to 250 °F]
Heat Detection Thermostats
Series
2450A,
2455RA
Features
UL recognized
Applications
Heat detection
Environmental exposure 0 °C
to 150 °C [32 °F to 302 °F]
One-shot Thermostats
Series
2450R,
2455R,
2450RC,
2455RC
Features
Applications
15 A, 120 Vac; 10 A, 240 Vac
Automation equipment
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]
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
2455R- 100-84
2455R- 100-72
2455R- 100-73
2455R- 100-85
2455R- 100-74
2455R- 100-75
2455R- 100-76
2455R- 100-77
2455R- 100-86
2455R- 100-98
2455R- 100-88
2455R- 100-89
2455RC- 9100-373
2455R- 100-78
2455R- 100-79
2455R- 100-92
2455R- 100-93
2455R- 100-94
2455R- 100-95
2455R- 100-96
Function
Open
Close
°C
+/-K °C
+/-K
30
3
15
40
3
25
50
3
35
60
3
45
70
3
55
80
3
65
90
3
75
100
4
80
110
4
90
120
4
98
130
4
110
140
4
115
150
7
120
Close
Open
°C
+/-K °C
+/-K
50
3
35
6
60
3
45
6
80
3
65
6
90
3
75
6
100
4
80
7
120
4
100
7
140
4
115
8
Mounting Bracket B 203S
4
6
6
6
6
6
6
7
7
6
8
8
8
Terminals T 146