Enhance your electronic applications with the HONEYWELL 21SX39-T, a premium snap action/limit switch designed for reliability and precision. Manufactured in the US, this switch features a SPDT (Single Pole Double Throw) configuration with a momentary action, capable of handling up to 7A electrical load. Ideal for aerospace, industrial, and high-performance applications, it offers exceptional durability and versatile electrical options.
Product Features
Mechanical life of up to 10,000,000 operations, ensuring long-term durability
SPDT circuitry with quick connect, solder, or PCB terminations
Operating force as low as 0.147 N (15 g) with precise differential travel of 0.025 mm (0.001 in)
Wide operating temperature range from -54°C to 204°C (-65°F to 400°F), suitable for harsh environments
Constructed from military-grade components for robustness and reliability
Available with gold contacts, bifurcated gold contacts, or silver contacts to suit various electrical loads
UL, CSA, ENEC, CE, MIL-PRF-8805, and FAA-PMA approvals for global compliance and aerospace applications
Compact size: 10.2 mm H x 5.08 mm W x 12.7 mm L (0.4 in H x 0.20 in W x 0.5 in L)
Specifications
Characteristic
Parameter
Part Number
21SX39-T
Manufacturer
HONEYWELL
Country of Origin
US
UOM
EA
ECCN
EAR99
Package Type
PCS
Electrical Ratings
Circuitry
Electrical Data & UL Codes
SPDT
7 A resistive, 4 A inductive at 250 Vac; 7 A at 28 Vdc
Applications
Commercial and military aerospace for door, landing gear, and cockpit switch monitoring
Industrial pressure and temperature sensing
Power generation and fuel level switching
Learn more about the product specifications and detailed features in the datasheet:
{"id":10028312691005,"title":"21SX39-T","handle":"21sx39-t","description":"\u003ch3\u003eHONEYWELL 21SX39-T Snap Acting\/Limit Switch SPDT Momentary 7A\u003c\/h3\u003e\n\n\u003cp\u003eEnhance your electronic applications with the HONEYWELL 21SX39-T, a premium snap action\/limit switch designed for reliability and precision. Manufactured in the US, this switch features a SPDT (Single Pole Double Throw) configuration with a momentary action, capable of handling up to 7A electrical load. Ideal for aerospace, industrial, and high-performance applications, it offers exceptional durability and versatile electrical options.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMechanical life of up to 10,000,000 operations, ensuring long-term durability\u003c\/li\u003e\n \u003cli\u003eSPDT circuitry with quick connect, solder, or PCB terminations\u003c\/li\u003e\n \u003cli\u003eOperating force as low as 0.147 N (15 g) with precise differential travel of 0.025 mm (0.001 in)\u003c\/li\u003e\n \u003cli\u003eWide operating temperature range from -54°C to 204°C (-65°F to 400°F), suitable for harsh environments\u003c\/li\u003e\n \u003cli\u003eConstructed from military-grade components for robustness and reliability\u003c\/li\u003e\n \u003cli\u003eAvailable with gold contacts, bifurcated gold contacts, or silver contacts to suit various electrical loads\u003c\/li\u003e\n \u003cli\u003eUL, CSA, ENEC, CE, MIL-PRF-8805, and FAA-PMA approvals for global compliance and aerospace applications\u003c\/li\u003e\n \u003cli\u003eCompact size: 10.2 mm H x 5.08 mm W x 12.7 mm L (0.4 in H x 0.20 in W x 0.5 in L)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eCharacteristic\u003c\/th\u003e\n \u003cth\u003eParameter\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e21SX39-T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003eHONEYWELL\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCountry of Origin\u003c\/td\u003e\n \u003ctd\u003eUS\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eUOM\u003c\/td\u003e\n \u003ctd\u003eEA\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eECCN\u003c\/td\u003e\n \u003ctd\u003eEAR99\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePackage Type\u003c\/td\u003e\n \u003ctd\u003ePCS\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eElectrical Ratings\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eCircuitry\u003c\/th\u003e\n \u003cth\u003eElectrical Data \u0026amp; UL Codes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSPDT\u003c\/td\u003e\n \u003ctd\u003e7 A resistive, 4 A inductive at 250 Vac; 7 A at 28 Vdc\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eCommercial and military aerospace for door, landing gear, and cockpit switch monitoring\u003c\/li\u003e\n \u003cli\u003eIndustrial pressure and temperature sensing\u003c\/li\u003e\n \u003cli\u003ePower generation and fuel level switching\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLearn more about the product specifications and detailed features in the datasheet:\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-mr\/4985842330717700849858421888373696honeywell-sensing-micro-switch-sx-basic-switch-product-sheet-004968-2-en.pdf.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eNote: For additional details, please search the internet using the part number 21SX39-T.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-16T09:24:47+05:30","created_at":"2025-08-16T09:24:47+05:30","vendor":"Waldom Electonics","type":"Switches","tags":["7A","HWLL","IMPORT_CSV","IMPORT_PT2","Snap","SPDT","Switch","WLDM"],"price":153420,"price_min":153420,"price_max":153420,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50627141697853,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"21SX39-T","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"21SX39-T","public_title":null,"options":["Default Title"],"price":153420,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"21SX39-T","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/21SX39-T_11915781_fb54bdf6.jpg?v=1755316490"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/21SX39-T_11915781_fb54bdf6.jpg?v=1755316490","options":["Title"],"media":[{"alt":null,"id":45866444194109,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/21SX39-T_11915781_fb54bdf6.jpg?v=1755316490"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/21SX39-T_11915781_fb54bdf6.jpg?v=1755316490","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eHONEYWELL 21SX39-T Snap Acting\/Limit Switch SPDT Momentary 7A\u003c\/h3\u003e\n\n\u003cp\u003eEnhance your electronic applications with the HONEYWELL 21SX39-T, a premium snap action\/limit switch designed for reliability and precision. Manufactured in the US, this switch features a SPDT (Single Pole Double Throw) configuration with a momentary action, capable of handling up to 7A electrical load. Ideal for aerospace, industrial, and high-performance applications, it offers exceptional durability and versatile electrical options.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMechanical life of up to 10,000,000 operations, ensuring long-term durability\u003c\/li\u003e\n \u003cli\u003eSPDT circuitry with quick connect, solder, or PCB terminations\u003c\/li\u003e\n \u003cli\u003eOperating force as low as 0.147 N (15 g) with precise differential travel of 0.025 mm (0.001 in)\u003c\/li\u003e\n \u003cli\u003eWide operating temperature range from -54°C to 204°C (-65°F to 400°F), suitable for harsh environments\u003c\/li\u003e\n \u003cli\u003eConstructed from military-grade components for robustness and reliability\u003c\/li\u003e\n \u003cli\u003eAvailable with gold contacts, bifurcated gold contacts, or silver contacts to suit various electrical loads\u003c\/li\u003e\n \u003cli\u003eUL, CSA, ENEC, CE, MIL-PRF-8805, and FAA-PMA approvals for global compliance and aerospace applications\u003c\/li\u003e\n \u003cli\u003eCompact size: 10.2 mm H x 5.08 mm W x 12.7 mm L (0.4 in H x 0.20 in W x 0.5 in L)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eCharacteristic\u003c\/th\u003e\n \u003cth\u003eParameter\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e21SX39-T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003eHONEYWELL\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCountry of Origin\u003c\/td\u003e\n \u003ctd\u003eUS\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eUOM\u003c\/td\u003e\n \u003ctd\u003eEA\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eECCN\u003c\/td\u003e\n \u003ctd\u003eEAR99\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePackage Type\u003c\/td\u003e\n \u003ctd\u003ePCS\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eElectrical Ratings\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eCircuitry\u003c\/th\u003e\n \u003cth\u003eElectrical Data \u0026amp; UL Codes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSPDT\u003c\/td\u003e\n \u003ctd\u003e7 A resistive, 4 A inductive at 250 Vac; 7 A at 28 Vdc\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eCommercial and military aerospace for door, landing gear, and cockpit switch monitoring\u003c\/li\u003e\n \u003cli\u003eIndustrial pressure and temperature sensing\u003c\/li\u003e\n \u003cli\u003ePower generation and fuel level switching\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLearn more about the product specifications and detailed features in the datasheet:\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-mr\/4985842330717700849858421888373696honeywell-sensing-micro-switch-sx-basic-switch-product-sheet-004968-2-en.pdf.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eNote: For additional details, please search the internet using the part number 21SX39-T.\u003c\/p\u003e\u003cbr\u003e"}
