Please refer to the English Version as our Official Version.

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Home Products Switches Toggle Switches~~S821/U~~

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See specifications for product details.

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S821/U - NKK Switches

Name: NKK Switches S821/U
Brand: NKK Switches
SKU: S821/U
Price: 7.27 USD
Availability: InStock
Rating: 5 (10 reviews)

Manufacturer Part Number: S821/U

Manufacturer: NKK Switches

Allelco Part Number: 98D-S821/U

Warranty: 1 Year Allelco Warranty - Find out more

Parts Description: SWITCH TOGGLE DPST 30A 125V

Package: Tray

Data sheet: 1.S821/U.pdf ...

Datasheets
Cylindrical Battery Holders.pdf

PCN Design/Specification
S821/3821 Appearance Chg 31/Aug/2018.pdf

Environmental Information
NKK Switches PFOS & PFOA Free Cert.pdf RoHS Cert - Switches & Pushbuttons.pdf

RoHs Status: ROHS3 Compliant

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Our certification

In stock: 2026

Unit Price: $18.85
Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity	Unit Price	Ext. Price
1+	$18.85	$18.85
200+	$7.52	$1,504.00
500+	$7.27	$3,635.00

The above prices does not include taxes and freight rates, which will be calculated on the order pages.

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Specifications

S821/U Tech Specifications
NKK Switches - S821/U technical specifications, attributes, parameters and parts with similar specifications to NKK Switches - S821/U

Product Attribute	Attribute Value
Manufacturer	NKK Switches
Voltage Rating - DC	30 V
Voltage Rating - AC	125 V
Termination Style	Screw Terminal
Switch Function	On-Off
Series	S
Panel Cutout Dimensions	Circular - 12.50mm Dia
Package	Tray
Operating Temperature	-10°C ~ 70°C
Mounting Type	Panel Mount
Ingress Protection	-
Illumination Voltage (Nominal)	-

Product Attribute	Attribute Value
Illumination Type, Color	-
Illumination	Non-Illuminated
Features	-
Electrical Life	25,000 Cycles
Current Rating (Amps)	30A (AC/DC)
Circuit	DPST
Bushing Thread	M12 x 1
Base Product Number	S821
Actuator Type	Standard Round
Actuator Material	Brass, Chrome Plated
Actuator Length	22.00mm

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8536.50.9065

Parts with Similar Specifications

The three parts on the right have similar specifications to NKK Switches S821/U

Product Attribute
Part Number	S821/UC	S821/U-AT401H	S821/CUL	S821/UC-AT401S
Manufacturer	NKK Switches	NKK Switches	NKK Switches	NKK Switches
Ingress Protection	-	-	-	-
Features	-	-	-	Simultaneous Sampling
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Bushing Thread	-	-	-	-
Actuator Material	-	-	-	-
Termination Style	-	-	-	-
Current Rating (Amps)	-	-	-	-
Illumination Type, Color	-	-	-	-
Panel Cutout Dimensions	-	-	-	-
Actuator Length	-	-	-	-
Actuator Type	-	-	-	-
Voltage Rating - AC	-	-	-	-
Illumination	-	-	-	-
Illumination Voltage (Nominal)	-	-	-	-
Electrical Life	-	-	-	-
Circuit	-	-	-	-
Series	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Voltage Rating - DC	-	-	-	-
Switch Function	-	-	-	-
Base Product Number	-	DAC34H84	MAX500	ADS62P42

S821/U Datasheet PDF

Download S821/U pdf datasheets and NKK Switches documentation for S821/U - NKK Switches.

Datasheets: Cylindrical Battery Holders.pdf
PCN Design/Specification: S821/3821 Appearance Chg 31/Aug/2018.pdf
Environmental Information: NKK Switches PFOS & PFOA Free Cert.pdf RoHS Cert - Switches & Pushbuttons.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.
Aman***arris

Apr 3, 2026

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.
Mike***nch

Apr 3, 2026

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.
Daic***K.

Mar 23, 2026

Very good. No issue after long time testing.
Kevi***.

Mar 17, 2026

Fast switching and stable output. Very satisfied with this IC
Daou***hekebkeb

Jun 16, 2024

I had a great experience purchasing items from Allelcoelec, I recommend
Uri ***al

Jun 19, 2024

Good comunication,
Transpnt regarding the process and price.
Yaqu***l Ali

Jun 19, 2024

Providing reasonable prices, regular follow-up of orders, providing accurate and regular invoices, timely delivery of goods, excellent customer service and providing original goods and best quality materials.
Lea ***

Jun 19, 2024

Morrey was very helpful and right on top of things!
He replied quickly to my RFQ. He was very courteous and professional.

Write a Review

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

Use your express account for shipment if you have one.
Use our account for the shipment. Refer to the table below for the approximate charges.

(Different time frame / countries / package size has different price.)

Delivery Method

Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

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Efficient Supply Management
Cost-Saving Procurement
Fast Sourcing & Delivery

Contact us if you have any questions.

Phone
+00852 9146 4856
Email
info@allelco.com

Certifications & Memberships

S821/U

NKK Switches
98D-S821/U

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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Service Email: info@allelco.com

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Please refer to the English Version as our Official Version.Return

S821/U - NKK Switches

Specifications

Environmental & Export Classifications

Parts with Similar Specifications

S821/U Datasheet PDF

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

Very good. No issue after long time testing.

Fast switching and stable output. Very satisfied with this IC

I had a great experience purchasing items from Allelcoelec, I recommend

Good comunication,Transpnt regarding the process and price.

Providing reasonable prices, regular follow-up of orders, providing accurate and regular invoices, timely delivery of goods, excellent customer service and providing original goods and best quality materials.

Morrey was very helpful and right on top of things!He replied quickly to my RFQ. He was very courteous and professional.