About Senseta/Klixon
Sensata/Klixon brand engineered devices can be found in a wide scope of applications, including industrial, major appliance, aircraft, commercial building and semiconductor protection. Klixon controls, protectors, circuit breakers and thermostats help prevent damage from overheating and fires in everything from commercial heating and air conditioning systems to refrigerators, cars and lighting.
Technical Resources
Product Range
Sensata replacements for Honeywell parts
Charcroft can offer Sensata Klixon precision thermostat alternatives and replacements for Honeywell obsolete parts, contact us to find out more.
Product Documentation
Sensata / Klixon & Airpax Circuit Breakers

209 Series Magnetic Circuit Breaker
The 209, E-Frame circuit breaker combines power switching with accurate, reliable circuit protection in a compact single or multipole unit. The unit is ideal for branch circuit applications such as EDP, air conditioners, panel boards and lighting controls.
Product Documentation

209 Series Magnetic Circuit Breaker
The 209, E-Frame circuit breaker combines power switching with accurate, reliable circuit protection in a compact single or multipole unit. The unit is ideal for branch circuit applications such as EDP, air conditioners, panel boards and lighting controls.
Product Documentation

Klixon® 2TC Series
1–25 amp, single–phase, miniature ambient compensated
- Miniature size
- Light weight
- Trip–free design
- Current ratings (1 to 25 amps)
- High vibration resistance
- High interrupting capacity
- Coordinated ratings
- AS58091 qualified (Also:Military Approvals, FAA PMA)
- Typical end use: Aircraft power distribution systems
Product Documentation

Klixon® 3TC Series
15–35 amp, single–phase, miniature ambient compensated
- Miniature size
- Light weight
- Trip–free design
- Options include: longer push button, high vibration, random vibration, metric mounting thread, metric terminal thread, dust boot (part #14500-1 fits 15/32 bushing, part #14500-5 fits 7/16 bushing), terminal hardware
- AS58091 qualified
- Current rating: 15 to 35 amps
- Coordinated ratings
- High vibration resistance (option)
- High interrupting capacity
- Typical use: Where ambient temperature exceeds the 160°F (71°C) maximum of non–ambient compensated thermal circuit breakers
Product Documentation
Sensata / Klixon Bi-metal Thermostats

5BT Series -65°F to 400°F, SPDT, Welded, Hermetically Sealed ½"
The Klixon 5BT series thermostat is a high reliability, hermetically sealed thermal switch. The single pole, double throw design allows versatility and economy in providing two functions within the same device. Typically these Klixon switches are used to control and indicate at a preset temperature. One pole can control a cooling fan and the other pole can indicate impending danger.
- Single pole, double throw (SPDT)
- Hermetically sealed
- Vacuum baked and back–filled with nitrogen
- High resistance to shock and vibration
- Preset, non–adjustable calibration
- Qualified to MIL-PRF-24236 /24
The 5BT thermostat is the ideal choice where quality and reliability in a double throw device are critical.

4344 Series Thermostats
Hermetically Sealed Thermostat
- Snap-action switching
- Rapid thermal response
- Single pole, single throw
- Normally open or normally closed
- Pre-set, non-adjustable calibration
- Various mounting configurations available
- UL recognized, file #34618
- CSA recognized, file #LR24458
Product Documentation

Klixon® M2 Series Thermostats
0®F to 300®F, Narrow Differential, Hermetically Sealed ½"
- Hermetically sealed
- Vacuum baked and back–filled with dry nitrogen
- Single pole, single throw (SPST)
- Normally open or normally closed
- Low profile
- Narrow differential
- Preset, non–adjustable calibration
- Long cycle life (250,000 cycles)
- Qualified to MIL-S-24236/20
- Qualified to NASA S-311-641/02
Product Documentation

Klixon® M1 and 11041 Series Thermostats
½” Disc Hermetic Thermostats, -65°F to 550°F, SPST
- Single Pole / Single Throw (SPST)
- Preset temperature set points, non-adjustable calibration
- High resistance to shock and vibration
- Hermetically sealed, vacuum baked and back-filled with nitrogen
- Various mounting configurations available
- Qualified to MIL-PRF-24236/1
Product Documentation

Klixon® 3BT and 4BT Series Thermostats
0°F to 350°F, Tiny Stat™ Precision Thermostats
- Smallest snap–acting thermal switches ever made
- Extremely fast response
- Single pole, single throw (SPST)
- Normally open or closed
- Preset, non-adjustable calibration
- Hermetically sealed and back–filled with nitrogen
- Gold plated
- Various mounting configurations available
- Qualified to MIL-PRF-24236/13 (4BT) and MIL-PRF-24236/19 (3BT)
- Qualified to NASA S-311-641/06 (4BT) and NASA S-311-641/07 (3BT)
Product Documentation

5100 Series
Hermetically Sealed Thermostat Probe
- RoHS compliant per EU directive 2002 / 95 / EC
- ½” disc button style
- Hermetic glass seal, isolated-case only
- Ideal for immersion sensing
Product Documentation

6700 Series
TO-220, Subminiature Bimetal Disc Thermostat
- RoHS compliant per EU directive 2002 / 95 / EC
- TO-220 / Y-220 international electronic package standard
- Ideal for surface and air sensing on PC boards and heat sinks
- VDE approved with “P” bracket option
- Gold-plated contacts
- Up to 20,000 life cycles @ max standard amperage
- Up to 100,000 life cycles @ max gold contact amperage
Product Documentation

6600 Series
8-Pin DIP, Subminiature Bimetal Disc Thermostat
- RoHS compliant per EU directive 2002 / 95 / EC
- 8-pin DIP international electronic package standard
- Ideal for surface and air sensing on PC boards
- Gold-plated contacts
- Up to 30,000 life cycles @ max standard amperage (120VAC)
- Up to 100,000 life cycles @ max gold contact amperage
Product Documentation

1NT Series
Fixed Temperature Thermostats
- ISO9001: 2000 certification
- Factory inspected for continuity and contact resistance
- Global sales and technical support
- Ambient temperature rating from 40°C to 240°C (-40°F to 464°F)
- 1NT base provides:
- Low cost
- High temperature capability
- Clean processing
- High impact strength
- Low static generation
- Bi-metal disc is factory pre-set to achieve:
- Operation at requested temperatures
- Tamperproof settings
- Product innovations include:
- Solid metal-to-metal terminal construction
- Current free spring
- One piece transfer mechanism
- Switch actions:
- Automatic reset: Available with both normally open and normally closed switch logic
- Manual reset: Mechanical reset device
- Trip free manual reset: UL M2 class rating that resists consumer tampering
- One shot: meets agency requirements for single operation device
Product Documentation

3NT Series
Fixed Temperature Thermostats
- Single Pole / Single Throw (SPST)
- Preset temperature set points, non-adjustable calibration
- High resistance to shock and vibration
- Hermetically sealed, vacuum baked and back-filled with nitrogen
- Various mounting configurations available
- Qualified to MIL-PRF-24236/1
Product Documentation
20413, 20600 and 20650 Series
Fixed Temperature Thermostats - snap-action automatic or manual reset.
- Klixon snap-action bimetal disc assures positive make/break action
- Available with surface, thru-wall,well or cavity-type mountings
- Temperature setting factory calibrated to your specifications
- High capacity – up to 30 amps at 120, 240, and 277 VAC resistive
- Extra high capacity – up to 40 amps at 120 and 240 VAC resistive
Product Documentation
ACMP Series
Single–Phase and Three–Phase Aircraft Motor Protectors
- Single– and three–phase protection
- Locked rotor protection
- Thermal protection
- Neutral tap
- Meets thermal protection requirements of MIL-M-7969, direct acting type, Method III
Product Documentation
Sensata / Klixon Precision Switches

Ideal for Extremely Harsh And Demanding Environments
- Hermetically sealed
- Excellent shock and vibration resistance
- Switching up to 4 amps
- Optimal for low level circuits
- Temperature range between -275°F and 450°F
- Lightweight
- 30 VDC
- Single and multiple pole designs available
- Small, axi–symmetric design for robustness and reliability
- Various mounting configurations for custom applications
- Sealed and unsealed pushbuttons options
- Available side plate designs for narrow width applications
- Proven, reliable performance and long life
- MIL-S-8805 qualification option
Klixon hermetic miniature and sub–miniature snap–action switches are ideal for extremely harsh and demanding environments as found in aircraft, military, aerospace, and aircraft engines applications.
Klixon’s precision hermetic switches have been used for over 40 years in a wide range of applications, and can be found on virtually all commercial and military aircraft, as well as various space vehicles and satellites worldwide.
We offer a wide choice of precision switches ideally suited for rugged applications. Sensata Technologies also manufactures a hermetically sealed snap–acting pressure switch line for applications in aerospace and electronics where high reliability and resistance to severe environments is essential.
- 45–600 psia actuation pressures
- Small and lightweight
- High vibration and shock resistance
- Corrosion resistant stainless steel construction
- Snap–action switching
- Available in standard or custom configurations
Applications
Hermetic switches are used for position indication in applications such as:
- Aircraft landing gear and helicopter weight-on-wheels
- Valve position indication in aircraft engines and APU’s
- Aircraft environmental control systems and engine controls
- Aircraft flight control surfaces
- Stores away (munitions)
- Door stairway indication
- Brake controls
- Parachute openers
- Bomb racks and ejectors
- APUs
- Satellite panel indication and satellite arm indication
- Pilot ejection seats
- Missile launchers
- Thrust reversers
- Explosive actuators
- EVA equipment
- IUS platform
- Hydraulic / servo controls
- Engine valve indication
- Gearboxes
- Warhead safety circuits
- Weapon firing systems and trigger switches
- Rocket motor controls
- Space station

Klixon® KX Series Sine Switch
- Hermetic seal provides exceptional operational freedom from environmental conditions
- Compactly designed to fit small, narrow spaces
- Snap–acting Klixon sine switch provides exceptional resistance to shock and vibration
- Available with either screw or solder lug type terminals
- Embedded leads are available
- Lead lengths can be supplied to customer requirements
Product Documentation

Klixon® Basic AT Series Switches
- Meet the demands of low-level current switching applications
- Various mechanical and electrical configurations available as standard or custom configurations
- Actuation plungers of various shapes and materials available
- Multi-pole switch package options
- Mounting via threaded brushings or side-plate design
- Wiring can be supplied as flying leads or via a variety of standard connectors
Product Documentation

6PS Series Pressure Switches
-65°F to 275°F, maximum corrosion resistance under hostile conditions
- Hermetically sealed per MIL-E-5400 paragraph 6.3.10
- Covers actuation range of 45 to 600 PSIA
- Miniature size and lightweight
- High vibration resistance
- Corrosion resistant: 300 series stainless steel construction for all environment and media exposed parts
- Available in wide range of standard and custom configurations
- 8000 psi minimum burst pressure
- Typical use: maximum corrosion resistance under hostile conditions
Product Documentation
Sensata / Klixon Thermal Cut-Outs and Motor Protectors

7AM Series
Lighting, electrical, thermal, battery, motor protection
- Over 3 billion sold
- Compact, miniature size
- UL, CSA, KEMA (ENEC) approvals
- Individually temperature checked on modern, custom-designed equipment
- Positive make and break with Klixon snap–action disc
- Repeatable temperature performance over life
- Gasketed steel case suitable for most impregnation processes
- Current and temperature sensitivity for maximum design flexibility and application
- Wide selection of leads and insulating sleeves
Product Documentation

17AM Series
Thermal Protector
- Shaded Pole Motor
- Permanent split capacitor motor
- Fluorescent lighting ballasts
- HID ballasts
- Transformer
- Recessed lighting fixtures
- Battery packs
- Vacuum cleaners
- Automotive accessory motors, solenoids, PC boards and other applications
Product Documentation

6AP Series
Automotive Motor Protector
- Snap–action Klixon disc
- Thermal motor protection reacting to both current and temperature
- Compact design
- High cycle life and reliability
- Terminal material provides trouble–free welding and in pre–tinned variation easy wavebath-soldering
- Prevents overly high motor temperatures by providing very precise tripping times
- Current–time characteristic optimized for each specific application
- Protector selection and application testing by Sensata Technologies laboratory with results in extended report at your service
- Protect 12– and 24–volt DC motors during locked rotor, overload and over–current situations
- Wide variety of standard terminals configurations enable terminals to be welded, soldered or crimped
- Custom configurations available including: open temperature, bimetal type, heater wire material, thickness
- Custom design flexibility including customer part number printed on product and color coding
Product Documentation

4CR Series
Starter Relay Motor Protector for AC starter relays up to 25 amps
Features and Overview
- Reliable operation
- Long life independent of mounting position
- Start winding current rating: 25 amps
- Wide range of pick–up and drop–out ratings
- Small size for installation in compact equipment
- Economical
Product Uses
- Universal application
- Single–phase
- Split–phase
- Capacitor start
Product Documentation
4CR Starter Relay Motor Protector Klixon/Sensata Data Sheet | PDF

MA10 Series
Motor protector and thermal cut–out - 250VAC - 12 A resistive
Features and Overview
- Snap–action Klixon disc is exposed
- ENEC, UL, CSA approvals
- Compact design for easy mounting
- Cost effective and reliable protection
- Available in wide range of calibrated pre-set operating temperatures with varying tolerances
- A high, middle, or low current-sensitive bimetal disc is available at no additional charge
- Fast thermal response
For over 30 years the Sensata Technologies MA10 has provided reliable protection in a variety of small domestic and personal care appliances. The MA10 has set the world standard in the field of open type temperature–sensitive safety cut–outs.
Product Documentation
MA10 Klixon/Sensata Data Sheet | PDF

2MM Series
Battery protector and thermal cut–out - 250VAC 7 (2.0) A
Features and Overview
- Snap–action Klixon disc: field proven, reliable and repeatable snap–action bimetal actuation
- ENEC, BEAB, CSA approvals
- 120VAC and 230VAC
- Low profile shape for close coupling to on– or in–winding applications
- Competitive performance to price ratio: maximum quality and reliability at a cost effective price
- Maximum protection under locked rotor and overload conditions
- Compact size for ease of installation, even in small places
- Available in two versions: with epoxy insulation and with additional sleeve
Product Documentation

3MP Series
Motor protector and thermal cut–out - 250VAC 6(1)A
Features and Overview
- Snap–action Klixon disc
- ENEC, BEAB, UL, CSA approvals
- 120VAC and 230VAC
- Compact design
- Minimizes the total cost of the motor protection function
- Maximum protection under locked rotor conditions
- Provides extra flexibility during the motor manufacturing process
- Reduces the total need of motor protector type: one code for several applications
- Provides mounting flexibility and ease of handling
- Ensures trouble–free soldering and welding
- Low–cost solution for transformer protection
- Long life and reliable cycling
- Wide range of standard lead configuration available
- Wide range of customization available, including: leads, Mylar™ insulation sleeve, coding, colors
Product Documentation

3MP Self-Hold Series
Motor protector and thermal cut–out - Self–hold, 250VAC 6(1)A
Features and Overview
- Snap–action Klixon disc
- ENEC and UL approvals
- 120VAC and 230VAC
- Compact design
- Minimizes the total cost of the motor protection function
- Provides higher level of safety for appliances having free access to rotating parts
- Provides extra flexibility during the motor manufacturing process
- Provides mounting flexibility and ease of handling
- Guarantees to pass the UL 18 days locked rotor test in combination with high currents
- Assures maximum protection under locked rotor conditions
- European supply
- Wide range of standard lead configuration available
- Wide range of customization available, including: terminal configurations, leads, Mylar™ insulation sleeve, coding, colors
Product Documentation
3MP Self-Hold Motor Protector Klixon/Sensata Data Sheet | PDF

TH10 Series
Thermal Cut–Outs - Automatic 250V-13(2)A and 250V-30(5)A
Features and Overview
- Snap–action Klixon disc
- ENEC, UL, CSA approvals
- Wide temperature range: 45°C to 170°C
- Standard 5K tolerance
- Different bimetal resistivity
- Robust design: bimetal disc is protected by nickel–plated steel supports for superior cycling performance
- Full automated live: Provides stable setting values
- Low price: This particular design provides high competitively
- Flexible mounting with three terminal configurations available: on same end, on opposite end, on opposite end with holes
- Self–hold version is available as the TH11 or TH21 series: Identical construction but resistive material on one ceramic pin (identical dimensions mean that the TH10, TH11, andTH21 can be easily exchanged with one another)
Product Documentation

TH11 and TH21 Series
Thermal Cut–Outs - Self–hold 250V-16(2)A
Features and Overview
- Snap–action Klixon disc
- ENEC, UL, CSA approvals
- Wide temperature range
- Standard 5K tolerance
- Different bimetal resistivity
- Robust design: bimetal disc is protected by nickel-plated steel supports for superior cycling performance
- Full automated live: Provides stable setting values
- Low price: This particular design provides high competitively
- Flexible mounting with three terminal configurations available: on same end, on opposite end, on opposite end with holes
- Automatic reset version is available as the TH10 series(identical dimensions mean that the TH10, TH11, and TH21 can be easily exchanged with one another)
- TH11 operates at 230VAC, TH21 is designed for 120VAC applications
Product Documentation
YS10 Series
Thermal Cut–Outs - High current capacity small thermostat protector
Features and Overview
- Snap–action Klixon disc
- ENEC, UL, CSA, CQC, MITI approvals
- High current capacity (125Vac/16A) to cut off power circuit
- Has small size and thermal sensitivity of conventional MA10 protector
- Temperature range: 60°C to 150°C
- Reliable long life
- Automatic reset thermal cut-out (type 2C)
YS10 was developed to protect people and property from accidents occuring in hair dryers, fan heaters, and other products.
Product Documentation
9700 Series
Thermal protector for motors, fluorescent ballasts, temperature sensing controls - Up to 18 amps AC on–winding motor protector
Features and Overview
- Snap–action Klixon bimetal disc: Positive make and break is assured with proven Klixon strip disc, contact pressure at open temperature eliminates nuisance trips due to vibration
- Miniature size: compact design assures ease of installation
- Precision calibration: Temperature calibrated and inspected in controlled ambients for dependable consistent performance
- Sealed steel case: withstands impregnation and baking, can be varnish dipped, prevents changes in calibration during installation
- Options include: contact ratings of up to 18 amps for harsh environments; Mylar sleeves (shrinkable or non-shrinkable); electrical configurations, leads, and more
- UL, CSA, BEAB, VDE, SEMKO certifications on 9700K model
- ISO 9001
The Klixon 9700 protector is a field proven miniature protector developed to protect electrical equipment against overheating.
In addition to being small and lightweight, the unit is both temperature and current sensitive. Since the 9700 is sealed to withstand varnish dipping, it can be mounted directly in windings where it can best sense the true temperature of the electrical equipment. As a result, over-temperature protection is assured.
Since the case is not electrically insulated, the protector is furnished with a durable Mylar insulating sleeve. Shrinkable and non-shrinkable sleeves are available.
Product Documentation
9700 Thermal Motor Protector Klixon/Sensata Data Sheet | PDF
Pressure Switches and Pressure Sensors

PS80 Series
HVAC/R, commercial, and industrial uses / -20°F to 150°F, automatic reset pressure switch
Features and Overview
- Epoxy–less seal
- Flexible range of set–points and tolerances
- Factory calibrated fixed set–points
- Single–pole, single–throw switch; normally open or closed contacts
- Hermetically sealed sensor
Product Documentation

PS80-2X Series
CO2 pressure switches - For use in R744/CO2 operated systems
Features and Overview
- Hermetically sealed
- Environmentally sealed leads
- Reliable over broad pressure and temperature ranges
- Factory calibrated settings
- Single–pole, single–throw switch; normally open or closed contacts
- Proven reliability
Leading the world in switch design. The PS80-2X is an automatic reset pressure switch designed to meet the unique challenges of R744/COs-based air conditioning and refrigeration equipment. These green systems require robust switches capable of withstanding the increased pressures and temperatures generated by these units. Sensata has redesigned the flagship PS80 to meet the special requirements of these transcritical R744 systems
Product Documentation

20PS Series
HVAC/R, commercial, and industrial uses / -20°F to 150°F, automatic reset pressure switch
Features and Overview
- Single pole, single throw switch normally open or closed contacts
- Factory calibrated pressure setpoints from vacuum to 750 psig (52 Bar)
- Snap–acting, stainless steel
- Hermetically sealed sensor
- Environmentally sealed or vented switch
This compact, rugged switch utilizes a snap–acting stainless steel diaphragm that reverses its curvature when pressurized to a customer specified actuation pressure. When the disc snaps it opens or closes a set of electrical contacts by means of a transfer pin. Resetting the switch occurs automatically when pressure drops below the release value.
Product Documentation

29PS Series
HVAC/R, commercial, and industrial uses / -20°F to 150°F, manual reset pressure switch
Features and Overview
- Trip–free manual reset
- Maintenance–free design
- Single–pole, single–throw, normally closed contacts
- Factory calibrated pressure set points
- Hermetically sealed sensor
The 29PS utilizes a snap–acting stainless steel Klixon disc that reverses its curvature when pressurized above a customer specified actuation pressure. When the disc snaps it opens a set of electrical contacts by means of a transfer pin. Resetting of the switch must be accomplished manually by pressing the integrated reset button.
Product Documentation

6PS Series
Pressure switch / -65°F to 275°F, maximum corrosion resistance under hostile conditions
Features and Overview
- Hermetically sealed per MIL-E-5400 paragraph 6.3.10
- Covers actuation range of 45 to 600 PSIA
- Miniature size and lightweight
- High vibration resistance
- Corrosion resistant: 300 series stainless steel construction for all environment and media exposed parts
- Available in wide range of standard and custom configurations
- 8000 psi minimum burst pressure
- Typical use: maximum corrosion resistance under hostile conditions
Klixon 6PS Series precision pressure switches are snap–acting, all–welded devices with hermetically sealed switch contacts. They were developed for applications in aerospace and electronics where high reliability and/or resistance to severe environments is required.
Product Documentation
6PS Pressure Switch Klixon/Sensata Data Sheet | PDF

2CP Series
Pressure switch
The 2CP5/2CP50 Series is ideal for demanding Air Conditioning and Refrigeration applications where long-term reliability & accuracy is a must. This series provides proven reliability at a competitive price.
Product Documentation

112CP Series
Combined Pressure/Temperature Sensor
The 112CP series combined pressure/temperature sensor delivers the benefit of both pressure and in-stream temperature sensing in a single, robust integrated package.
Product Documentation
112CP Combined Pressure/Temperature Sensor Klixon/Sensata Data Sheet | PDF

3PP8 Series
Automotive Silicon MEMs Strain Gage Hermetic Pressure Sensing
- Silicon MEMs strain gage sensor
- Temperature compensated and accurate performance over a wide temperature range
- EEPROM memory: stores calibration coefficients and serialization
- Expanded user diagnostic capability
- Available in pressure ranges from 0–500 and 0–5,000 psis
- Available in a variety of thread configurations
Product Documentation
3PP8 Automotive Hermetic Pressure Sensing Klixon/Sensata Data Sheet | PDF












