Discover the high-performance MICRO SWITCH™ SM Series, a line of premium subminiature snap-action switches designed for precision applications across aerospace and industrial sectors. Manufactured by Honeywell in Mexico, these switches deliver exceptional reliability, durability, and electrical capacity in a compact form factor.
Product Features
Long Life Cycle: Mechanical lifespan of up to 10,000,000 operations ensures durability and reduces replacement costs.
Wide Temperature Range: Operates reliably from -54 °C to 204 °C (-65 °F to 400 °F), suitable for harsh environments.
High Electrical Capacity: Handles power loads up to 11 A (Vac) or 1/4 HP (Vac).
Precision Operation: Operating forces as low as 0.06 N (6 g) and differential travel as low as 0.025 mm (0.001 in).
Versatile Actuation: Available with various actuators including pin plunger, straight lever, roller lever, simulated roller lever, and paddle lever.
Global Approvals: UL, CSA, ENEC, CE, MIL-PRF-8805, and FAA-PMA certifications for worldwide application compliance.
Compact & Robust: Military-grade phenolic housing, lightweight design, suitable for aerospace and industrial applications.
Electrical Options: Contacts available in silver, gold-plated, or bifurcated gold configurations for low-voltage DC applications.
Specifications
Characteristic
Parameter
Differentiator
Low operating force up to 2 oz; power load switching to 11 A; motor load capacity 1/4 HP
Ampere Rating
0.1 A to 11 A
Circuitry
SPDT
Operating Force
0.04 oz to 2 oz
Termination
Quick connect, solder, PCB
Voltage
115 Vac, 125 Vac, 250 Vac, 30 Vdc
Housing
Phenolic
Mechanical Life
Up to 10 million operations
Size
12.7 mm H x 6.35 mm W x 20.3 mm L (0.5 in H x 0.25 in W x 0.8 in L)
Applications
Aerospace: Monitoring door positions, landing gear status, cockpit controls, military switch assemblies, and commercial aircraft systems.
Industrial: Pressure and temperature switches, power generation, and fuel level monitoring in gas and oil applications.
{"id":10028312625469,"title":"21SM366","handle":"21sm366","description":"\u003ch3\u003eHONEYWELL 21SM366 Basic\/Snap Action Switches SUBMINIATURE BASICS\u003c\/h3\u003e\n\u003cp\u003eDiscover the high-performance MICRO SWITCH™ SM Series, a line of premium subminiature snap-action switches designed for precision applications across aerospace and industrial sectors. Manufactured by Honeywell in Mexico, these switches deliver exceptional reliability, durability, and electrical capacity in a compact form factor.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eLong Life Cycle:\u003c\/strong\u003e Mechanical lifespan of up to 10,000,000 operations ensures durability and reduces replacement costs.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Operates reliably from -54 °C to 204 °C (-65 °F to 400 °F), suitable for harsh environments.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh Electrical Capacity:\u003c\/strong\u003e Handles power loads up to 11 A (Vac) or 1\/4 HP (Vac).\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePrecision Operation:\u003c\/strong\u003e Operating forces as low as 0.06 N (6 g) and differential travel as low as 0.025 mm (0.001 in).\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVersatile Actuation:\u003c\/strong\u003e Available with various actuators including pin plunger, straight lever, roller lever, simulated roller lever, and paddle lever.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGlobal Approvals:\u003c\/strong\u003e UL, CSA, ENEC, CE, MIL-PRF-8805, and FAA-PMA certifications for worldwide application compliance.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Robust:\u003c\/strong\u003e Military-grade phenolic housing, lightweight design, suitable for aerospace and industrial applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eElectrical Options:\u003c\/strong\u003e Contacts available in silver, gold-plated, or bifurcated gold configurations for low-voltage DC applications.\u003c\/li\u003e\n\u003c\/ul\u003e\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\u003eDifferentiator\u003c\/td\u003e\n \u003ctd\u003eLow operating force up to 2 oz; power load switching to 11 A; motor load capacity 1\/4 HP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eAmpere Rating\u003c\/td\u003e\n \u003ctd\u003e0.1 A to 11 A\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCircuitry\u003c\/td\u003e\n \u003ctd\u003eSPDT\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOperating Force\u003c\/td\u003e\n \u003ctd\u003e0.04 oz to 2 oz\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTermination\u003c\/td\u003e\n \u003ctd\u003eQuick connect, solder, PCB\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVoltage\u003c\/td\u003e\n \u003ctd\u003e115 Vac, 125 Vac, 250 Vac, 30 Vdc\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHousing\u003c\/td\u003e\n \u003ctd\u003ePhenolic\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMechanical Life\u003c\/td\u003e\n \u003ctd\u003eUp to 10 million operations\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSize\u003c\/td\u003e\n \u003ctd\u003e12.7 mm H x 6.35 mm W x 20.3 mm L (0.5 in H x 0.25 in W x 0.8 in L)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eAerospace:\u003c\/strong\u003e Monitoring door positions, landing gear status, cockpit controls, military switch assemblies, and commercial aircraft systems.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndustrial:\u003c\/strong\u003e Pressure and temperature switches, power generation, and fuel level monitoring in gas and oil applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: 21SM366\u003c\/li\u003e\n \u003cli\u003eManufacturer: HONEYWELL\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: MX\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: EA\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003ePackage Type: Not specified\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-mr\/mr-21sm366.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: Datasheet was not processed, please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-16T09:24:43+05:30","created_at":"2025-08-16T09:24:43+05:30","vendor":"Waldom Electonics","type":"Switches","tags":["HWLL","IMPORT_CSV","IMPORT_PT2","Snap","Switch","WLDM"],"price":238377,"price_min":238377,"price_max":238377,"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":50627141599549,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"21SM366","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"21SM366","public_title":null,"options":["Default Title"],"price":238377,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"21SM366","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/21SM366_11915774_15aad7e3.jpg?v=1755316487"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/21SM366_11915774_15aad7e3.jpg?v=1755316487","options":["Title"],"media":[{"alt":null,"id":45866443211069,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/21SM366_11915774_15aad7e3.jpg?v=1755316487"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/21SM366_11915774_15aad7e3.jpg?v=1755316487","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eHONEYWELL 21SM366 Basic\/Snap Action Switches SUBMINIATURE BASICS\u003c\/h3\u003e\n\u003cp\u003eDiscover the high-performance MICRO SWITCH™ SM Series, a line of premium subminiature snap-action switches designed for precision applications across aerospace and industrial sectors. Manufactured by Honeywell in Mexico, these switches deliver exceptional reliability, durability, and electrical capacity in a compact form factor.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eLong Life Cycle:\u003c\/strong\u003e Mechanical lifespan of up to 10,000,000 operations ensures durability and reduces replacement costs.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Operates reliably from -54 °C to 204 °C (-65 °F to 400 °F), suitable for harsh environments.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh Electrical Capacity:\u003c\/strong\u003e Handles power loads up to 11 A (Vac) or 1\/4 HP (Vac).\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePrecision Operation:\u003c\/strong\u003e Operating forces as low as 0.06 N (6 g) and differential travel as low as 0.025 mm (0.001 in).\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVersatile Actuation:\u003c\/strong\u003e Available with various actuators including pin plunger, straight lever, roller lever, simulated roller lever, and paddle lever.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGlobal Approvals:\u003c\/strong\u003e UL, CSA, ENEC, CE, MIL-PRF-8805, and FAA-PMA certifications for worldwide application compliance.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Robust:\u003c\/strong\u003e Military-grade phenolic housing, lightweight design, suitable for aerospace and industrial applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eElectrical Options:\u003c\/strong\u003e Contacts available in silver, gold-plated, or bifurcated gold configurations for low-voltage DC applications.\u003c\/li\u003e\n\u003c\/ul\u003e\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\u003eDifferentiator\u003c\/td\u003e\n \u003ctd\u003eLow operating force up to 2 oz; power load switching to 11 A; motor load capacity 1\/4 HP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eAmpere Rating\u003c\/td\u003e\n \u003ctd\u003e0.1 A to 11 A\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCircuitry\u003c\/td\u003e\n \u003ctd\u003eSPDT\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOperating Force\u003c\/td\u003e\n \u003ctd\u003e0.04 oz to 2 oz\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTermination\u003c\/td\u003e\n \u003ctd\u003eQuick connect, solder, PCB\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVoltage\u003c\/td\u003e\n \u003ctd\u003e115 Vac, 125 Vac, 250 Vac, 30 Vdc\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHousing\u003c\/td\u003e\n \u003ctd\u003ePhenolic\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMechanical Life\u003c\/td\u003e\n \u003ctd\u003eUp to 10 million operations\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSize\u003c\/td\u003e\n \u003ctd\u003e12.7 mm H x 6.35 mm W x 20.3 mm L (0.5 in H x 0.25 in W x 0.8 in L)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eAerospace:\u003c\/strong\u003e Monitoring door positions, landing gear status, cockpit controls, military switch assemblies, and commercial aircraft systems.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndustrial:\u003c\/strong\u003e Pressure and temperature switches, power generation, and fuel level monitoring in gas and oil applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: 21SM366\u003c\/li\u003e\n \u003cli\u003eManufacturer: HONEYWELL\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: MX\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: EA\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003ePackage Type: Not specified\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-mr\/mr-21sm366.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: Datasheet was not processed, please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e"}
