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  • Small Push Button Switch S Series
  • Small Push Button Switch S Series
  • Small Push Button Switch S Series
  • Small Push Button Switch S Series

Small Push Button Switch S Series SB-221N/O

4.59 (17)
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Item Feature
Contact Resistance (mohm)
Less than ten (at DC2-4V 100mA)
Terminal Shape
Solder terminal
Number of Poles
Electrical Opening and Closing Durability
10000 times or more
Current Capacity (A)
Resistance load 3A 125V AC 1.5A 250V AC
Withstand Voltage
AC2.0kV more than 1 ( AC1.5kV more than 1 minute)
The black button of AT-414 is pre-attached. Other operating units are sold separately.
Dimensions A (mm)
Insulation Resistance
More than 200Mohm (DC500V)
Unipolar single throw
Functional Opreration
- OFF - (< > Is momentary)
Mechanical Opening and Closing Durability
50000 times or more
Heat Resistant
In the case of using a soldering iron: Less than 350 degress within 3 seconds
Installation ring (AT-506), operation control button (AT-414, AT412)
circular nut (AT-504), internal-tooth washer (AT-508), hexagonal nut (AT-527), phi13.2 round-head button black (AT-414)
Customer Reviews
5 star 15
4 star 0
3 star 0
2 star 1
1 star 1
Review Rating: 4.59
17 Customer Reviews
The reviews are automatic translation.
For small compressor
From Japan
On 2018-04-06 12:25:36
I think that making and reliability as a product is solid, Push button switch normally pushed ON I thought that it was released off, I bought three pieces, Always ON It has come to be pushed OFF. This side is ON / OFF not just <> I would like to have it clearly marked.
This review is about item#34605277.
During repair and maintenance of equipment
From Japan
On 2018-02-09 16:59:32
We are satisfied with price and performance as a manufacturer product. You can use it with confidence.
This review is about item#38444095.
Machine start switch
From Japan
On 2018-01-31 15:10:57
I use it without any problems. We are expecting durability.
This review is about item#38444086.
Incorporated in operation circuit
From Japan
On 2018-01-13 21:22:30
I pull to remove the button for installation, but it is hard and can not be removed. The button broke as soon as I pull it all the way. If you look closely well, screw it in ... Is it serious? . For individual packaging, I wanted you to put the buttons in the disconnected state.
This review is about item#38443876.
Repair of measuring equipment
From Japan
On 2017-12-21 17:06:52
Being perfect in action, I got satisfactory results.
This review is about item#38444095.
For sub battery charge control.
From Japan
On 2017-10-13 15:08:58
Only for products of specialized manufacturers, always used with confidence. I do not hesitate to choose.
This review is about item#8600523.
Security switch for heavy machinery
From Japan
On 2017-10-02 16:02:29
It was used for wiring as a hidden switch for security of heavy equipment. It is useful.
This review is about item#8600523.
As navigation restart switch
From Japan
On 2017-04-24 16:17:45
Since I wanted to forcibly restart Navi only while driving, I bought this button because communication between navi and smartphone is interrupted until the next ride. Connection disappears when button is pushed and connected when you release your finger · · · ACC restart button.
This review is about item#34605277.
Tractor LED illumination light sw
From Japan
On 2017-03-12 19:25:19
Since SW last time melted and failed, it became possible to use it safely with ampere up and relay mounting.
This review is about item#75804233.
Electric wiring
From Japan
On 2016-07-29 17:40:16
There is no problem in quality because it is a maker item. It is more expensive than a trading company purchase, but it is saved because it can be purchased with a small number.
This review is about item#38444095.