HB Series Single Pole Standard Precision Snap-acting Switches
Introducing the HB Series Snap-acting Switches manufactured by LITTELFUSE / C&K COMPONENTS. Designed for reliable performance in various industrial applications, these sealed switches provide high durability and environmental resistance.
Part Number: HBS2KCB4SA055C Manufacturer: LITTELFUSE / C&K COMPONENTS Country of Origin: VN Unit of Measure: EA ECCN: EAR99 Package Type: BAG Datasheet
Product Features & Benefits
Low differential travel with high repeatability for precise switching
Long operational life—typical of 150,000 cycles
Single and double pole circuitry options available
Sealed actuator and case for environmental protection (IP65 rated)
Electrical ratings from low level to 20 AMPS @ 480 V AC
Operating temperature range from –67°F to 302°F (–55°C to 150°C)
Sealed against airborne contaminants and splashing liquids
20 AMPS @ 125, 250 & 480 V AC; 0.25 A @ 250 V DC; 0.5 A @ 125 V DC
Precious metal alloy
Precious metal alloy
20 AMPS @ 125, 250 & 480 V AC; 0.25 A @ 250 V DC; 0.5 A @ 125 V DC; 3/4 HP @ 125 V AC; 1 1/2 HP @ 250 V AC
Gold alloy
Gold alloy
Low level* to 1 AMP @ 125 V AC; 1 AMP @ 30 V DC
Fine silver
Fine silver welded to copper base
22 AMPS @ 125 & 277 V AC; 15 A @ 480 V AC; 1/4 HP @ 125 V AC; 1/2 HP @ 250 V AC
Sealing & Environmental Protection
Designed with sealed actuator and case, these switches meet IP65 standards, ensuring protection against dust, water splashes, and dew condensation. The silicone boot seals the operating plunger, and epoxy adhesive seals the base cover joint.
Ordering & Customization
To customize, select desired options from the available configurations. For additional options not listed, consult the Customer Service Center.
Note
Specifications and materials listed are for standard options. For custom switches, please contact Customer Service. The datasheet can be accessed here.
Disclaimer: The datasheet was not processed; please search the internet for the part number for more details.
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{"id":10027742822717,"title":"HBS2KCB4SA055C","handle":"hbs2kcb4sa055c","description":"\u003ch3\u003eHB Series Single Pole Standard Precision Snap-acting Switches\u003c\/h3\u003e\n\u003cp\u003eIntroducing the HB Series Snap-acting Switches manufactured by \u003cstrong\u003eLITTELFUSE \/ C\u0026amp;K COMPONENTS\u003c\/strong\u003e. Designed for reliable performance in various industrial applications, these sealed switches provide high durability and environmental resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e HBS2KCB4SA055C\u003cbr\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e LITTELFUSE \/ C\u0026amp;K COMPONENTS\u003cbr\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e VN\u003cbr\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e EA\u003cbr\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003cbr\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e BAG\u003cbr\u003e\n\u003ca href=\"https:\/\/www.ckswitches.com\/media\/1356\/hb.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLow differential travel with high repeatability for precise switching\u003c\/li\u003e\n\u003cli\u003eLong operational life—typical of 150,000 cycles\u003c\/li\u003e\n\u003cli\u003eSingle and double pole circuitry options available\u003c\/li\u003e\n\u003cli\u003eSealed actuator and case for environmental protection (IP65 rated)\u003c\/li\u003e\n\u003cli\u003eElectrical ratings from low level to 20 AMPS @ 480 V AC\u003c\/li\u003e\n\u003cli\u003eOperating temperature range from –67°F to 302°F (–55°C to 150°C)\u003c\/li\u003e\n\u003cli\u003eSealed against airborne contaminants and splashing liquids\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Mechanical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eContact Rating\u003c\/th\u003e\n\u003ctd\u003eFrom low level* to 20 AMPS @ 480 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElectrical Life\u003c\/th\u003e\n\u003ctd\u003e150,000 cycles at 20 AMPS @ 250 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInsulation Resistance\u003c\/th\u003e\n\u003ctd\u003e1,000 MΩ min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDielectric Strength\u003c\/th\u003e\n\u003ctd\u003e1,500 Vrms min. @ sea level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Force\u003c\/th\u003e\n\u003ctd\u003eFrom 4 oz. to 26 oz. max. at actuator button\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting Torque\u003c\/th\u003e\n\u003ctd\u003e3 in\/lbs max. (screws), 4 in\/lbs max. (terminal screws), 4-6 in\/lbs (panel bushing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDegree of Protection\u003c\/th\u003e\n\u003ctd\u003eIP65 (dust-proof, water splash resistant, dew condensation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003e–67°F to 302°F (–55°C to 150°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMaterials \u0026amp; Construction\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSwitch Housing: Heat resistant\/electrical grade phenolic\u003c\/li\u003e\n\u003cli\u003eInserts: Brass alloy\u003c\/li\u003e\n\u003cli\u003eActuator Button: Moisture resistant phenolic\u003c\/li\u003e\n\u003cli\u003eSpring: Copper alloy\u003c\/li\u003e\n\u003cli\u003ePivot: Brass alloy\u003c\/li\u003e\n\u003cli\u003eContacts: Gold alloy (≤1A) or Silver alloy (\u0026gt;1A)\u003c\/li\u003e\n\u003cli\u003eTerminals: Brass alloy, bright tin plated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical Ratings by Contact Material\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMovable Contact\u003c\/th\u003e\n\u003cth\u003eStationary Contact\u003c\/th\u003e\n\u003cth\u003eElectrical Rating\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFine silver\u003c\/td\u003e\n\u003ctd\u003eFine silver welded to copper base\u003c\/td\u003e\n\u003ctd\u003e20 AMPS @ 125, 250 \u0026amp; 480 V AC; 0.25 A @ 250 V DC; 0.5 A @ 125 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrecious metal alloy\u003c\/td\u003e\n\u003ctd\u003ePrecious metal alloy\u003c\/td\u003e\n\u003ctd\u003e20 AMPS @ 125, 250 \u0026amp; 480 V AC; 0.25 A @ 250 V DC; 0.5 A @ 125 V DC; 3\/4 HP @ 125 V AC; 1 1\/2 HP @ 250 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGold alloy\u003c\/td\u003e\n\u003ctd\u003eGold alloy\u003c\/td\u003e\n\u003ctd\u003eLow level* to 1 AMP @ 125 V AC; 1 AMP @ 30 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFine silver\u003c\/td\u003e\n\u003ctd\u003eFine silver welded to copper base\u003c\/td\u003e\n\u003ctd\u003e22 AMPS @ 125 \u0026amp; 277 V AC; 15 A @ 480 V AC; 1\/4 HP @ 125 V AC; 1\/2 HP @ 250 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eSealing \u0026amp; Environmental Protection\u003c\/h3\u003e\n\u003cp\u003eDesigned with sealed actuator and case, these switches meet IP65 standards, ensuring protection against dust, water splashes, and dew condensation. The silicone boot seals the operating plunger, and epoxy adhesive seals the base cover joint.\u003c\/p\u003e\n\n\u003ch3\u003eOrdering \u0026amp; Customization\u003c\/h3\u003e\n\u003cp\u003eTo customize, select desired options from the available configurations. For additional options not listed, consult the Customer Service Center.\u003c\/p\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eSpecifications and materials listed are for standard options. For custom switches, please contact Customer Service. The datasheet can be accessed \u003ca href=\"https:\/\/www.ckswitches.com\/media\/1356\/hb.pdf\" target=\"_blank\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eDisclaimer: The datasheet was not processed; please search the internet for the part number for more details.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-16T02:37:48+05:30","created_at":"2025-08-16T02:37:48+05:30","vendor":"Waldom Electonics","type":"Switches","tags":["IMPORT_CSV","IMPORT_PT2","LITTE-CKCO","Snap","Switches","WLDM"],"price":164369,"price_min":164369,"price_max":164369,"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":50625950023997,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"HBS2KCB4SA055C","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"HBS2KCB4SA055C","public_title":null,"options":["Default Title"],"price":164369,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"HBS2KCB4SA055C","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/HBS2KCB4SA055C_11119483_2c44bf6a.jpg?v=1755292071"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/HBS2KCB4SA055C_11119483_2c44bf6a.jpg?v=1755292071","options":["Title"],"media":[{"alt":null,"id":45860339188029,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/HBS2KCB4SA055C_11119483_2c44bf6a.jpg?v=1755292071"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/HBS2KCB4SA055C_11119483_2c44bf6a.jpg?v=1755292071","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eHB Series Single Pole Standard Precision Snap-acting Switches\u003c\/h3\u003e\n\u003cp\u003eIntroducing the HB Series Snap-acting Switches manufactured by \u003cstrong\u003eLITTELFUSE \/ C\u0026amp;K COMPONENTS\u003c\/strong\u003e. Designed for reliable performance in various industrial applications, these sealed switches provide high durability and environmental resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e HBS2KCB4SA055C\u003cbr\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e LITTELFUSE \/ C\u0026amp;K COMPONENTS\u003cbr\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e VN\u003cbr\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e EA\u003cbr\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003cbr\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e BAG\u003cbr\u003e\n\u003ca href=\"https:\/\/www.ckswitches.com\/media\/1356\/hb.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLow differential travel with high repeatability for precise switching\u003c\/li\u003e\n\u003cli\u003eLong operational life—typical of 150,000 cycles\u003c\/li\u003e\n\u003cli\u003eSingle and double pole circuitry options available\u003c\/li\u003e\n\u003cli\u003eSealed actuator and case for environmental protection (IP65 rated)\u003c\/li\u003e\n\u003cli\u003eElectrical ratings from low level to 20 AMPS @ 480 V AC\u003c\/li\u003e\n\u003cli\u003eOperating temperature range from –67°F to 302°F (–55°C to 150°C)\u003c\/li\u003e\n\u003cli\u003eSealed against airborne contaminants and splashing liquids\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Mechanical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eContact Rating\u003c\/th\u003e\n\u003ctd\u003eFrom low level* to 20 AMPS @ 480 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElectrical Life\u003c\/th\u003e\n\u003ctd\u003e150,000 cycles at 20 AMPS @ 250 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInsulation Resistance\u003c\/th\u003e\n\u003ctd\u003e1,000 MΩ min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDielectric Strength\u003c\/th\u003e\n\u003ctd\u003e1,500 Vrms min. @ sea level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Force\u003c\/th\u003e\n\u003ctd\u003eFrom 4 oz. to 26 oz. max. at actuator button\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting Torque\u003c\/th\u003e\n\u003ctd\u003e3 in\/lbs max. (screws), 4 in\/lbs max. (terminal screws), 4-6 in\/lbs (panel bushing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDegree of Protection\u003c\/th\u003e\n\u003ctd\u003eIP65 (dust-proof, water splash resistant, dew condensation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003e–67°F to 302°F (–55°C to 150°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMaterials \u0026amp; Construction\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSwitch Housing: Heat resistant\/electrical grade phenolic\u003c\/li\u003e\n\u003cli\u003eInserts: Brass alloy\u003c\/li\u003e\n\u003cli\u003eActuator Button: Moisture resistant phenolic\u003c\/li\u003e\n\u003cli\u003eSpring: Copper alloy\u003c\/li\u003e\n\u003cli\u003ePivot: Brass alloy\u003c\/li\u003e\n\u003cli\u003eContacts: Gold alloy (≤1A) or Silver alloy (\u0026gt;1A)\u003c\/li\u003e\n\u003cli\u003eTerminals: Brass alloy, bright tin plated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical Ratings by Contact Material\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMovable Contact\u003c\/th\u003e\n\u003cth\u003eStationary Contact\u003c\/th\u003e\n\u003cth\u003eElectrical Rating\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFine silver\u003c\/td\u003e\n\u003ctd\u003eFine silver welded to copper base\u003c\/td\u003e\n\u003ctd\u003e20 AMPS @ 125, 250 \u0026amp; 480 V AC; 0.25 A @ 250 V DC; 0.5 A @ 125 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrecious metal alloy\u003c\/td\u003e\n\u003ctd\u003ePrecious metal alloy\u003c\/td\u003e\n\u003ctd\u003e20 AMPS @ 125, 250 \u0026amp; 480 V AC; 0.25 A @ 250 V DC; 0.5 A @ 125 V DC; 3\/4 HP @ 125 V AC; 1 1\/2 HP @ 250 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGold alloy\u003c\/td\u003e\n\u003ctd\u003eGold alloy\u003c\/td\u003e\n\u003ctd\u003eLow level* to 1 AMP @ 125 V AC; 1 AMP @ 30 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFine silver\u003c\/td\u003e\n\u003ctd\u003eFine silver welded to copper base\u003c\/td\u003e\n\u003ctd\u003e22 AMPS @ 125 \u0026amp; 277 V AC; 15 A @ 480 V AC; 1\/4 HP @ 125 V AC; 1\/2 HP @ 250 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eSealing \u0026amp; Environmental Protection\u003c\/h3\u003e\n\u003cp\u003eDesigned with sealed actuator and case, these switches meet IP65 standards, ensuring protection against dust, water splashes, and dew condensation. The silicone boot seals the operating plunger, and epoxy adhesive seals the base cover joint.\u003c\/p\u003e\n\n\u003ch3\u003eOrdering \u0026amp; Customization\u003c\/h3\u003e\n\u003cp\u003eTo customize, select desired options from the available configurations. For additional options not listed, consult the Customer Service Center.\u003c\/p\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eSpecifications and materials listed are for standard options. For custom switches, please contact Customer Service. The datasheet can be accessed \u003ca href=\"https:\/\/www.ckswitches.com\/media\/1356\/hb.pdf\" target=\"_blank\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eDisclaimer: The datasheet was not processed; please search the internet for the part number for more details.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e"}
