The OMRON D3V-21G-2C4A-K is a reliable snap acting/limit switch designed for precise control applications. This SPST (Single Pole Single Throw) switch features a momentary contact configuration with a high current rating of 21A, making it suitable for demanding industrial environments. The switch is RoHS compliant, ensuring environmentally responsible manufacturing.
Product Features
High current capacity: 21A with a contact gap of 0.5 mm (G gap)
Available with various actuators including pin, hinge, long hinge, and roller levers
Self-cleaning contacts for enhanced durability and reliability
Optional external or internal fitted levers for versatile mounting
RoHS compliant for environmentally conscious applications
Technical Specifications
Contact Rating
21 A
Contact Gap
0.5 mm (G gap)
Contact Form
SPST (Single Pole Single Throw)
Maximum Operating Force
1.23 N (125 gf) for pin plunger models
Terminals
Solder terminals or quick-connect terminals (#187, #250)
Operating Temperature
Standard models; high-temperature options available (125°C)
Model Variants and Actuators
Model Number
Actuator
Force (OF)
Terminals
D3V-21G-1C4A
Pin plunger
1.23 N (125 gf)
Solder / Quick-connect (#250)
D3V-21G1-1C4A
Short hinge lever
1.23 N (125 gf)
Solder / Quick-connect (#250)
D3V-21G2-1C4A
Hinge lever
0.78 N (80 gf)
Solder / Quick-connect (#250)
D3V-21G3-1C4A
Long hinge lever
0.44 N (45 gf)
Solder / Quick-connect (#250)
D3V-21G4-1C4A
Simulated roller lever
0.83 N (85 gf)
Solder / Quick-connect (#250)
D3V-21G5-1C4A
Short hinge roller lever
1.42 N (145 gf)
Solder / Quick-connect (#250)
D3V-21G6-1C4A
Hinge roller lever
0.79 N (80 gf)
Solder / Quick-connect (#250)
Additional Details
Mounting hole size options: None (3.1 mm) or 2.9 mm with "-K" suffix
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{"id":10023251116349,"title":"D3V-21G-2C4A-K","handle":"d3v-21g-2c4a-k","description":"\u003ch3\u003eOMRON ELECTRONIC COMPONENTS D3V-21G-2C4A-K Limit Switch\u003c\/h3\u003e\n\n\u003cp\u003eThe OMRON D3V-21G-2C4A-K is a reliable snap acting\/limit switch designed for precise control applications. This SPST (Single Pole Single Throw) switch features a momentary contact configuration with a high current rating of 21A, making it suitable for demanding industrial environments. The switch is RoHS compliant, ensuring environmentally responsible manufacturing.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh current capacity: 21A with a contact gap of 0.5 mm (G gap)\u003c\/li\u003e\n \u003cli\u003eAvailable with various actuators including pin, hinge, long hinge, and roller levers\u003c\/li\u003e\n \u003cli\u003eSelf-cleaning contacts for enhanced durability and reliability\u003c\/li\u003e\n \u003cli\u003eOptional external or internal fitted levers for versatile mounting\u003c\/li\u003e\n \u003cli\u003eRoHS compliant for environmentally conscious applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eContact Rating\u003c\/th\u003e\n \u003ctd\u003e21 A\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eContact Gap\u003c\/th\u003e\n \u003ctd\u003e0.5 mm (G gap)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eContact Form\u003c\/th\u003e\n \u003ctd\u003eSPST (Single Pole Single Throw)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMaximum Operating Force\u003c\/th\u003e\n \u003ctd\u003e1.23 N (125 gf) for pin plunger models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTerminals\u003c\/th\u003e\n \u003ctd\u003eSolder terminals or quick-connect terminals (#187, #250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating Temperature\u003c\/th\u003e\n \u003ctd\u003eStandard models; high-temperature options available (125°C)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eModel Variants and Actuators\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eModel Number\u003c\/th\u003e\n \u003cth\u003eActuator\u003c\/th\u003e\n \u003cth\u003eForce (OF)\u003c\/th\u003e\n \u003cth\u003eTerminals\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G-1C4A\u003c\/td\u003e\n \u003ctd\u003ePin plunger\u003c\/td\u003e\n \u003ctd\u003e1.23 N (125 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G1-1C4A\u003c\/td\u003e\n \u003ctd\u003eShort hinge lever\u003c\/td\u003e\n \u003ctd\u003e1.23 N (125 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G2-1C4A\u003c\/td\u003e\n \u003ctd\u003eHinge lever\u003c\/td\u003e\n \u003ctd\u003e0.78 N (80 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G3-1C4A\u003c\/td\u003e\n \u003ctd\u003eLong hinge lever\u003c\/td\u003e\n \u003ctd\u003e0.44 N (45 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G4-1C4A\u003c\/td\u003e\n \u003ctd\u003eSimulated roller lever\u003c\/td\u003e\n \u003ctd\u003e0.83 N (85 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G5-1C4A\u003c\/td\u003e\n \u003ctd\u003eShort hinge roller lever\u003c\/td\u003e\n \u003ctd\u003e1.42 N (145 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G6-1C4A\u003c\/td\u003e\n \u003ctd\u003eHinge roller lever\u003c\/td\u003e\n \u003ctd\u003e0.79 N (80 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMounting hole size options: None (3.1 mm) or 2.9 mm with \"-K\" suffix\u003c\/li\u003e\n \u003cli\u003ePart Number: D3V-21G-2C4A-K\u003c\/li\u003e\n \u003cli\u003eManufacturer: OMRON ELECTRONIC COMPONENTS\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: Indonesia (ID)\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-om\/om-d3vm0914h.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more detailed specifications, model options, and technical data, please refer to the datasheet or contact your OMRON sales representative.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Datasheet was not processed please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-13T21:04:07+05:30","created_at":"2025-08-13T21:04:07+05:30","vendor":"Waldom Electonics","type":"","tags":["21A","IMPORT_CSV","OMRON-ELE","SPST","Switch","WLDM"],"price":16908,"price_min":16908,"price_max":16908,"available":false,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50616112841021,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"D3V-21G-2C4A-K","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"D3V-21G-2C4A-K","public_title":null,"options":["Default Title"],"price":16908,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"D3V-21G-2C4A-K","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/12045176.jpg?v=1755099250"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/12045176.jpg?v=1755099250","options":["Title"],"media":[{"alt":null,"id":45821700505917,"position":1,"preview_image":{"aspect_ratio":1.0,"height":640,"width":640,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/12045176.jpg?v=1755099250"},"aspect_ratio":1.0,"height":640,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/12045176.jpg?v=1755099250","width":640}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eOMRON ELECTRONIC COMPONENTS D3V-21G-2C4A-K Limit Switch\u003c\/h3\u003e\n\n\u003cp\u003eThe OMRON D3V-21G-2C4A-K is a reliable snap acting\/limit switch designed for precise control applications. This SPST (Single Pole Single Throw) switch features a momentary contact configuration with a high current rating of 21A, making it suitable for demanding industrial environments. The switch is RoHS compliant, ensuring environmentally responsible manufacturing.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh current capacity: 21A with a contact gap of 0.5 mm (G gap)\u003c\/li\u003e\n \u003cli\u003eAvailable with various actuators including pin, hinge, long hinge, and roller levers\u003c\/li\u003e\n \u003cli\u003eSelf-cleaning contacts for enhanced durability and reliability\u003c\/li\u003e\n \u003cli\u003eOptional external or internal fitted levers for versatile mounting\u003c\/li\u003e\n \u003cli\u003eRoHS compliant for environmentally conscious applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eContact Rating\u003c\/th\u003e\n \u003ctd\u003e21 A\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eContact Gap\u003c\/th\u003e\n \u003ctd\u003e0.5 mm (G gap)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eContact Form\u003c\/th\u003e\n \u003ctd\u003eSPST (Single Pole Single Throw)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMaximum Operating Force\u003c\/th\u003e\n \u003ctd\u003e1.23 N (125 gf) for pin plunger models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTerminals\u003c\/th\u003e\n \u003ctd\u003eSolder terminals or quick-connect terminals (#187, #250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating Temperature\u003c\/th\u003e\n \u003ctd\u003eStandard models; high-temperature options available (125°C)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eModel Variants and Actuators\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eModel Number\u003c\/th\u003e\n \u003cth\u003eActuator\u003c\/th\u003e\n \u003cth\u003eForce (OF)\u003c\/th\u003e\n \u003cth\u003eTerminals\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G-1C4A\u003c\/td\u003e\n \u003ctd\u003ePin plunger\u003c\/td\u003e\n \u003ctd\u003e1.23 N (125 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G1-1C4A\u003c\/td\u003e\n \u003ctd\u003eShort hinge lever\u003c\/td\u003e\n \u003ctd\u003e1.23 N (125 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G2-1C4A\u003c\/td\u003e\n \u003ctd\u003eHinge lever\u003c\/td\u003e\n \u003ctd\u003e0.78 N (80 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G3-1C4A\u003c\/td\u003e\n \u003ctd\u003eLong hinge lever\u003c\/td\u003e\n \u003ctd\u003e0.44 N (45 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G4-1C4A\u003c\/td\u003e\n \u003ctd\u003eSimulated roller lever\u003c\/td\u003e\n \u003ctd\u003e0.83 N (85 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G5-1C4A\u003c\/td\u003e\n \u003ctd\u003eShort hinge roller lever\u003c\/td\u003e\n \u003ctd\u003e1.42 N (145 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eD3V-21G6-1C4A\u003c\/td\u003e\n \u003ctd\u003eHinge roller lever\u003c\/td\u003e\n \u003ctd\u003e0.79 N (80 gf)\u003c\/td\u003e\n \u003ctd\u003eSolder \/ Quick-connect (#250)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMounting hole size options: None (3.1 mm) or 2.9 mm with \"-K\" suffix\u003c\/li\u003e\n \u003cli\u003ePart Number: D3V-21G-2C4A-K\u003c\/li\u003e\n \u003cli\u003eManufacturer: OMRON ELECTRONIC COMPONENTS\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: Indonesia (ID)\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-om\/om-d3vm0914h.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more detailed specifications, model options, and technical data, please refer to the datasheet or contact your OMRON sales representative.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Datasheet was not processed please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e"}
I'm particularly impressed with how carefully the header pins are packed for the RP2350-PiZero, they arrived in perfect condition without any bent pins, which has been a persistent issue with other competitors. This attention to packaging detail really stands out.
I also received the latest A4 revision of the RP2350, which shows you maintain current inventory, that's really valuable for customers who want the most up to date components.
The delivery was quick and hassle free throughout. I'll definitely be recommending you to others!
App feedback: The discounts offered through the app are a nice bonus, but the component search function could be improved to match the ease of use on the website version. The rest of the app functions work well.
