Thermal Sensors TRS Thermal Reed Switch Overview Applications The TRS Thermal Reed Switch is a highly reliable, precise Typical applications include temperature detection and temperature-sensitive switch ideal for energy conservation. overheat monitoring of electric appliances, heat-retention heater control for rice cookers, defrost for air conditioners Its unique proprietary design features a magnet and and vending machines, roll heater temperature control for a temperature-sensing soft ferromagnetic substance copying machines, radiator water temperature detection for called Thermorite®. The material’s magnetic flux density automotive electric fan control. decreases as the temperature increases turning it into a paramagnetic substance at the Curie temperature. These products have also been attested by the International Relay Association. Benefits • High reliability for on/off operations • Wide range of operating temperatures available • High-speed response from −10°C to +130°C • Long operational life • Excellent temperature accuracy of ±2.5°C • Excellent environmental durability • UL and CSA approved for TRS5***BLRU 100V • Extremely simple circuit design • UL approved for TRS5***BLRVU 200V • Compact, light and easy to handle • RoHS/REACH compliant • Dust, explosion and corrosion-proof Axial Type Wire Harness Type Case Type Molded Type One world. One KEMET © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard SE0201_TRS • 10/29/2018 1 Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com Thermal Sensors – TRS Thermal Reed Switch Ordering Information M- TRS 3- 50 M CR 00 VU Maximum Operating Rated Contact Shape Lead Shape Series Opening/Closing Temperature Voltage Approvals Type Classification Type Power (W) (°C) (VDC) Blank TRS 1 = 10.0 W M10 = −10°C 45 = 45°C 95 = 95°C B = Break Blank = Molded axial Blank Blank = 100 V Blank = No M = 3 = 35.0 W 0 = 0°C 50 = 50°C 100 = 100°C M = Make CR = C shape fixing bar 00 = Wire V = 200 V approvals Mold 5 = 60.5 W 5 = 5°C 55 = 55°C 105 = 105°C LR = L shape fixing bar harness U = UL and CSA 10 = 10°C 60 = 60°C 110 = 110°C SR = S shape 01 = Lead approved for 15 = 15°C 65 = 65°C 115 = 115°C terminal 100 V and UL 20 = 20°C 70 = 70°C 120 = 120°C 01E =Lead approved for 25 = 25°C 75 = 75°C 125 = 125°C terminal 200 V 30 = 30°C 80 = 80°C 130 = 130°C (S shape 35 = 35°C 85 = 85°C only) 40 = 40°C 90 = 90°C Structures and Principles of Operation Thermal Reed Switches (TRSTM) are temperature-sensing switches composed of a magnet and a temperature- sensing soft ferromagnetic substance called ThermoriteTM. This material's saturation magnetic fl ux density decreasesStructures as the temperature and Principlesincreases, and it of turns Operation into a paramagnetic substance at the Curie temperature. Thermal Reed Switches (TRS) are temperature-sensing switches composed of a magnet and a temperature-sensing soft ferromagnetic substance called Thermorite. This material’s saturation magnetic flux density decreases as the temperature Temperature sensing ferrite（Thermorite Ⓡ） increases, and it turns into a paramagnetic substance at its Curie temperature. ◆Our self-developed Themorite is temperature sensing ferrite utilizing Curie-temperature, where ferrites lose its magnetic property. ThermoriteThermorite changes properties its magnetic property rapidly at Curie-temperature. ◆Features• Thermorite of Thermorite changes as temperature its magnetic sensing property material. rapidly at its Curie temperature, providing quick response times. (1) •Curie-temperature The Curie temperature do not vary of as Thermorite time advances, does because not vary it depends with time, on compounding as it is based ratio. on a compounding ratio. (2) Arbitrary shape available as ceramics. (3) •Stable Thermorite against moist is stable or hazardous against gas. moisture and hazardous gas. Thermal property of Thermorite Permeability - temperature Saturation magnetic flux density ‒ temperature （1kHz-0.01Oe） 6000 3500 TC＝30 TC＝60 TC＝90 3000 5000 TC＝120 2500 4000 2000 3000 TC＝150 TC＝90 TC＝150 1500 TC＝60 Permeability 2000 1000 TC＝30 TC＝120 1000 500 Saturation magnetic flux density 0 0 0 20 40 60 80 100 120 140 160 0 20 40 60 80 100 120 140 160 Temperature（℃） Temperature（℃） TC=Curie temperature Structure of reed switch Encasing Glass tube ◆Reed switch is contact switch comprised of a pair of Fe-Ni alloy reeds encased in glass tube with inactive gas. The reeds are switched on or off by magnetic field of permanent magnet or magnet Inactive gas Contact Fe-Ni alloy reed coil. ◆Long lifetime, High environmental resistance because of protected contact by glass encasing. N S ◆ Reeds in glass tube become magnetized with S N magnetic field, and then two reeds contact and N © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard S SE0201_TRS • 10/29/2018 2 connectFort Lauderdale, each other FL (switch 33301 USA on). • 954-766-2800 And then magnetic • www.kemet.com field disappears, the reeds separate and disconnect (switch off). NEC TOKIN Sensors Vol.14 5 ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data. ●Please request for a specification sheet for detailed product data prior to the purchase. ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 2015.3.31 0000SENVOL14E1503H1 Structures and Principles of Operation Thermal Reed Switches (TRSTM) are temperature-sensing switches composed of a magnet and a temperature- sensing soft ferromagnetic substance called ThermoriteTM. This material's saturation magnetic fl ux density decreases as the temperature increases, and it turns into a paramagnetic substance at the Curie temperature. Temperature sensing ferrite（Thermorite Ⓡ） ◆Our self-developed Themorite is temperature sensing ferrite utilizing Curie-temperature, where ferrites lose its magnetic property. Thermorite changes its magnetic property rapidly at Curie-temperature. ◆Features of Thermorite as temperature sensing material. (1) Curie-temperature do not vary as time advances, because it depends on compounding ratio. (2) Arbitrary shape available as ceramics. (3) Stable against moist or hazardous gas. Thermal property of Thermorite Permeability - temperature Saturation magnetic flux density ‒ temperature （1kHz-0.01Oe） 6000 3500 TC＝30 TC＝60 TC＝90 3000 5000 TC＝120 2500 4000 2000 3000 TC＝150 TC＝90 TC＝150 1500 TC＝60 Permeability 2000 1000 TC＝30 TC＝120 1000 500 Thermal Sensors – TRS Thermal Reed Switch Saturation magnetic flux density 0 0 0 20 40 60 80 100 120 140 160 0 20 40 60 80 100 120 140 160 Temperature（℃） Temperature（℃） Structures and PrinciplesTC=Curie of Operation temperature cont’d Reed switch structure • The reed switch is a contactStructure switch of reed comprised switch of a pair of Fe-Ni alloy Encasing Glass tube reeds encased in a glass◆ Reed tube switchwith inactive is contact gas. switch The comprised reeds are of switched a pair of on or off by the magneticFe-Ni field alloy of a reedspermanent encased inmagnet glass tubeor magnet coil. • The reeds in the glass tube with become inactive magnetized gas. The reeds from are theswitched magnetic on or off by magnetic field of permanent magnet or magnet Inactive gas Contact Fe-Ni alloy reed field, allowing the two reedscoil. to make contact and connect (switch on). When the magnetic field◆ Long disappears, lifetime, the High reeds environmental separate and resistancedisconnect (switch off). because of protected contact by glass encasing. N S ◆Reeds in glass tube become magnetized with • The glass encasement of the reeds ensures high environmental S N magnetic field, and then two reeds contact and N resistance and a long operationalconnect each life. other (switch on). And then magnetic S field disappears, the reeds separate and disconnect TRS principle: Break (B) type(switch off). TRS principle : Break (B) type TRS principle : Break (B) type （ ■：Permanent magnet ■：Thermorite® ■：Reed switch contact area ） （ ■：Permanent magnet ■：Thermorite® ■：Reed switch contact area ） Reset temperature Action temperature Reset temperature Action temperature Low temperature High temperature Low temperature High temperature Thermal magnet = paramagnet Thermal magnet = NO magnetic Thermal magnet = paramagnet Thermal magnet = NO magnetic NEC TOKIN Sensors Vol.14 5 NS NS NS NS NS NS NS NS NS NS S N N S N S N S NS NS●AllNS specifications in this catalog and productionNS status ofNS products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data. NS NS●PleaseNS request for a specification sheetNS for detailed productNS data prior to the purchase. ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. ＜Magnetic Field of Contact Part＞ ＜Magnetic Field of Contact Part＞ ＜Magnetic Field of Contact Part＞ ＜Magnetic Field of Contact Part＞ Magnetic Flux Forming => Reed switch ON Magnetic Flux ≒0 => Reed switch OFF Magnetic Flux Forming => Reed switch ON Magnetic Flux ≒0 => Reed switch OFF 2015.3.31 0000SENVOL14E1503H1 SN SN SN SN Switch ON Switch OFF Switch ON Switch OFF TRSTRS principle principle: : Make (M) Make type (M) type TRS principle : Make (M) type （ ■：Permanent magnet ■：Thermorite® ■：Gapspacer（SP） ■：Reed switch contact area ） （ ■：Permanent magnet ■：Thermorite® ■：Gapspacer（SP） ■：Reed switch contact area ） Reset temperature