McMaster-Carr logo
    Filter by
    For Use With
    Electrical Phase
    Number of Circuits Controlled
    Display Type
    Control Type
    Actuation Point Adjustability
    Electrical Connection Type
    For System Type
    Switch Type
    Probe Diameter
    Measurement Unit
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Overall Height
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    17 Products

    Wall-Mount Temperature Switches

    Turn heating equipment on or off at a specified temperature. Switches have a probe on a cable for remote temperature readings. Set the actuation point with the adjustment dial.
    Switches
    Image of Product. DPST (Double Pole, Single Throw) Switch with Open Housing. Front orientation. Temperature Switches. Wall-Mount Temperature Switches, DPST—2 Circuits Controlled, Open Housing.
    Image of Product. DPST (Double Pole, Single Throw) Switch with Enclosed Housing. Front orientation. Temperature Switches. Wall-Mount Temperature Switches, DPST—2 Circuits Controlled, Enclosed Housing.

    DPST (Double

    Pole, Single

    Throw) Switch

    with Open Housing

    DPST

    (Double

    Pole,

    Single

    Throw)

    Switch with

    Enclosed

    Housing

    2 Circuits Controlled—Switches that control two circuits are double pole, single throw (DPST). They turn two circuits from on to off (normally closed).
    Open Housing—Switches with an open housing are often added to existing enclosures or custom installations.
    Probe
    Temp. Range,
    ° F
    Max. Switching Current @ Voltage
    (Electrical Phase)
    Dia.
    Lg.
    Material
    Ht.
    Wd.
    Dp.
    Fasteners
    Included
    Enclosure
    Rating
    Each
    DPST—2 Circuits Controlled
     
    Open Housing
    60 to 25030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		1/4"5 5/32"Copper4 1/16"2 5/8"3 1/16"No—3626K470000000
    200 to 55030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		5/16"4 1/2"Copper4 1/16"2 5/8"3 1/16"No—3626K44000000
     
    Enclosed Housing
    0 to 10030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		3/8"4 3/16"Copper5 3/4"3"3 1/8"NoNEMA 1
    		3626K11000000
    60 to 25030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		1/4"5 5/32"Copper5 3/4"3"3 1/8"NoNEMA 1
    		3626K17000000
    200 to 55030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		5/16"4 7/8"Copper5 3/4"3"3 1/8"NoNEMA 1
    		3626K23000000
    300 to 70030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		3/16"13"Nickel5 3/4"3"3 1/8"NoNEMA 1
    		3626K19000000
     
    Switch Mounts
    Packing Seals and Fittings—Use packing seals and fittings to seal the probe into threaded tanks and pipes.
    Each
    Packing Seals and Fittings3626K31000000
    Switches with Pilot Light
    Image of Product. DPST (Double Pole, Single Throw) Switch with Open Housing. Front orientation. Temperature Switches. Wall-Mount Temperature Switches, DPST—2 Circuits Controlled, Open Housing.
    Image of Product. DPST (Double Pole, Single Throw) Switch with Enclosed Housing. Front orientation. Temperature Switches. Wall-Mount Temperature Switches, DPST—2 Circuits Controlled, Enclosed Housing.

    DPST (Double

    Pole, Single

    Throw) Switch

    with Open Housing

    DPST

    (Double

    Pole,

    Single

    Throw)

    Switch with

    Enclosed

    Housing

    Switches with a pilot light indicate when the switch is on.
    2 Circuits Controlled—Switches that control two circuits are double pole, single throw (DPST). They turn two circuits from on to off (normally closed).
    Open Housing—Switches with an open housing are often added to existing enclosures or custom installations.
    Probe
    Temp. Range,
    ° F
    Max. Switching Current @ Voltage
    (Electrical Phase)
    Dia.
    Lg.
    Material
    Ht.
    Wd.
    Dp.
    Fasteners
    Included
    Enclosure
    Rating
    Each
    DPST—2 Circuits Controlled
     
    Open Housing
    60 to 25030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		1/4"5 5/32"Copper4 1/16"2 5/8"3 1/16"No—3626K870000000
    200 to 55030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		5/16"4 1/2"Copper4 1/16"2 5/8"3 1/16"No—3626K84000000
     
    Enclosed Housing
    0 to 10030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		3/8"4 3/16"Copper5 3/4"3"3 1/8"NoNEMA 1
    		3626K61000000
    60 to 25030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		1/4"5 5/32"Copper5 3/4"3"3 1/8"NoNEMA 1
    		3626K67000000
    200 to 55030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		5/16"4 7/8"Copper5 3/4"3"3 1/8"NoNEMA 1
    		3626K73000000
    300 to 70030 amp @ 120V AC (Single)
    30 amp @ 277V AC (Three)    		3/16"13"Nickel5 3/4"3"3 1/8"NoNEMA 1
    		3626K66000000
     
    Switch Mounts
    Packing Seals and Fittings—Use packing seals and fittings to seal the probe into threaded tanks and pipes.
    Each
    Packing Seals and Fittings3626K31000000

    Line-Voltage Thermostats

    Image of Product. For Heaters. Front orientation. 120V AC to 277V AC. Line-Voltage Thermostats.

    For Heaters

    Regulate line-voltage HVAC systems.
    For Heaters—Thermostats for heaters mount to a surface-mount outlet box.
    Cannot Be Sold To—Energy efficiency requirements restrict sales to the listed jurisdictions/areas.
    Overall
    Voltage,
    V AC
    Current,
    amp
    Temp. Setting,
    ° F
    Switch
    Designation
    Electrical
    Connection Type
    Ht.
    Wd.
    Dp.
    For Use
    Outdoors
    Mounting Fasteners
    Included
    Display
    Type
    Certification
    Cannot Be
    Sold To
    Each
    For Heaters
     
    Dial Control
    120 to 2772250 to 90DPST
    		Hardwire4 1/2"2 3/4"1 1/2"NoNoAnalogETL Listed
    		Colorado17395K95000000
     

    Programmable Line-Voltage Thermostats

    Image of Product. Front orientation. Thermostats. Programmable Line-Voltage Thermostats.
    Set these thermostats to adjust the temperature at certain times each day. They regulate heaters that use direct electrical power, such as baseboard and wall heaters.
    For
    System
    Overall
    Type
    Efficiency
    Program
    Function
    Voltage,
    V AC
    Current,
    amp
    Temp. Setting,
    ° F
    Switch
    Designation
    Electrical
    Connection Type
    Ht.
    Wd.
    Dp.
    For Use
    Outdoors
    Mounting Fasteners
    Included
    Display
    Type
    Each
    For Heaters
     
    Push-Button Control
    ElectricSingle StageDaily2401540 to 86DPST
    		Hardwire4 7/8"2 3/4"7/8"NoYesDigital5294N130000000
     

    Tamper-Resistant Line-Voltage Thermostats

    Image of Product. Front orientation. Thermostats. Tamper-Resistant Line-Voltage Thermostats.
    Image of Product. Thermostat with Tamper-Resistant Guard Removed. Front orientation. Thermostats. Tamper-Resistant Line-Voltage Thermostats, For Heaters, Dial Control.

    Thermostat with

    Tamper-Resistant

    Guard Removed

    A built-in guard prevents accidental changes and other tampering and protects these thermostats from damage. These thermostats regulate the temperature in HVAC systems that use direct electrical power. They’re often used with baseboard and wall heaters.
    DPST—DPST (double pole, single throw) thermostats control two circuits, so they have an “off” setting that cuts power to the thermostat. As a result, they’re more energy efficient and slightly safer than SPST (single pole, single throw) thermostats, which stay at a low setting instead of turning off completely.
    Cannot Be Sold To—Energy efficiency requirements restrict sales to the listed jurisdictions/areas.
    Overall
    Voltage,
    V AC
    Current,
    amp
    Temp. Setting,
    ° F
    Switch
    Designation
    Electrical
    Connection Type
    Ht.
    Wd.
    Dp.
    For Use
    Outdoors
    Mounting Fasteners
    Included
    Features
    Display
    Type
    Certification
    Cannot Be
    Sold To
    Each
    For Heaters
     
    Dial Control
    120 to 2772250 to 90DPST
    		Hardwire4 9/16"2 13/16"1 3/4"NoNoTamper-Resistant GuardAnalogETL Listed
    		Colorado5474N12000000
     

    Washdown Wall-Mount Temperature Switches

    To protect these switches from splashing water, corrosive liquid, and dust, the housing meets NEMA 4X for washdown conditions. Switches turn heating equipment on or off at a specified temperature. All have a probe on a cable for remote temperature readings. Set actuation points with the adjustment dial.
    DPST—DPST (Double pole, single throw) switch turns two circuits from on to off (normally closed).
    Probe
    Temp. Range
    Temperature
    Accuracy
    No. of Actuation
    Points
    Max. Switching Current @ Voltage
    (Electrical Phase)
    Dia.
    Lg.
    Wire
    Connection
    Ht.
    Wd.
    Dp.
    Enclosure
    Rating
    Each
    DPST—2 Circuits Controlled
     
    Unthreaded PFA-Coated Copper Probe
    70° F to 245° F/20° C to 120° C±4° F/±2.5° C125 amp @ 120V AC (Single)
    25 amp @ 240V AC (Single)    		5/16"6 1/2"Screw Terminal5 7/8"3 1/8"5"NEMA 4X
    		35055K710000000
     
    Switch Mounts
    Packing Seals and Fittings—Use packing seals and fittings to seal the probe into threaded tanks and pipes.
    Each
    Packing Seals and Fittings3626K31000000
    back to top