
SW-251 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $12.00 | Condition is New, Alco SW-251S-2 Selector Switch SW251S2, shipping cost = $6.50 | 99.8% |
![]() | $24.85 | Condition is New, SW-251 ALCO Switch Pushbutton Full Size, FREE SHIPPING | 99.9% |
![]() | $20.00 | Condition is New, Alco SW-251S-2 SWITCH ROTARY FULL SIZE on-none-on Lot of 2, shipping cost = $7.07 | 99.8% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $24.74 | Top Pick! Condition is For parts or not working, ALCO Model SW-251 Industrial Momentary Push Button Switch 30mm 230V N.C. & N.O., shipping cost = $7.42 | ![]() |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $6.95 | Condition is Used, ALCO CONTROLS SW-251S-2 USNT, shipping cost = $5.00 | 99.6% |
![]() | $21.00 | Condition is Used, NEW Alco SW-251 Rotary Selector Switch 8243 6A 230V AC #134N105, FREE SHIPPING | 99.9% |
![]() | $23.99 | Condition is Used, NEW Alco SW-251 Rotary Selector Switch 8243 6A 230V AC *FREE SHIPPING*, FREE SHIPPING | 99.7% |
![]() | $20.00 | Condition is Used, Allen-Bradley AB 800MR-Q24 , 800MR-D6 , 800MR-A2 extra white Lens , alco SW-251, shipping cost = $8.75 | 100.0% |
![]() | $35.00 | Condition is Used, NEW Alco SW-251 Rotary Selector Switch 8243 6A 230V AC #135N105, FREE SHIPPING | 99.9% |
![]() | $35.99 | Condition is Used, EMERSON ALCO CONTROLS SW-251 SELECTOR SWITCH 1NC 6AMP 230VAC, FREE SHIPPING | 99.6% |
![]() | $38.99 | Condition is Used, LOT OF 2 PUSH TO INVESTIGATE SYSTEM WITH ALCO SW-251 SELECTOR SWITCH NO-NC 6AMP, FREE SHIPPING | 99.9% |
![]() | $48.95 | Condition is Used, ALCO CONTROLS SW-251 USNT, shipping cost = $5.00 | 99.6% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $10.00 | Condition is New – Open box, Alco SW-251S-2 Selector Switch SW251S2, shipping cost = $5.72 | 100.0% |
![]() | $39.98 | Condition is New – Open box, LOT OF TWO SW-251S-2 ALCO SWITCH ROTARY FULL SIZE, shipping cost = $9.00 | 99.9% |
![]() | $44.95 | Condition is New – Open box, SW-251L ALCO SWITCH switch pushbutton full size, shipping cost = $9.00 | 99.9% |
![]() | $175.00 | Condition is New – Open box, ALCO SW-251S-3 3-POSITION SELECTOR SWITCH 6A 230 VAC SET OF 9 NEW IN BOX, FREE SHIPPING | 100.0% |



The ALCO SW-251 Emerson Pushbutton Switch is a reliable and robust electrical component designed for various applications. This switch, specifically model SW251, is a part of Emerson's extensive offering in the field of electrical controls.
The SW-251 is a single-pole, single-throw (SPST) pushbutton switch, which means it can either open or close a single electrical circuit. It features a high-quality, corrosion-resistant metal enclosure that ensures durability and reliability in harsh environments. The switch is rated for a maximum operating voltage of 250V AC or 30V DC, making it suitable for a wide range of power sources.
The SW-251 is equipped with a robust, long-life contact mechanism that provides reliable operation over time. The switch features a tactile, audible click when pressed, providing clear feedback to the user. This switch also features a LED indicator, which can be configured to illuminate in various modes, such as momentary or latching, depending on the application requirements.
The SW-251 is designed with ease of installation in mind. It features screw terminals for easy wiring, and the mounting flange is compatible with standard 1-inch electrical enclosure boxes. The switch is also available in various mounting configurations, including surface, panel, and flush mount, to accommodate different installation requirements.
In summary, the ALCO SW-251 Emerson Pushbutton Switch is a high-quality, reliable, and versatile electrical component that provides reliable operation in various applications. Its corrosion-resistant enclosure, robust contact mechanism, and configurable LED indicator make it an ideal choice for applications in industrial, commercial, and residential environments.
Pros of buying a ALCO SW-251 Emerson Pushbutton Switch:1. Reliability: The ALCO SW-251 is a high-quality switch known for its durability and reliability. It is designed to withstand heavy use and can operate in harsh environments, making it a good choice for industrial applications.
2. Versatility: The switch is available in various configurations, including normally open (NO) and normally closed (NC), and can be used in single-pole, three-position, and four-position applications.
3. Easy Installation: The switch is easy to install, as it requires no wiring or complex setup procedures. It can be mounted on a DIN rail or directly on a panel, making it a convenient option for DIY projects or quick repairs.
4. Cost-Effective: The ALCO SW-251 is a cost-effective solution compared to other high-quality switches on the market. It offers excellent value for money, making it a popular choice for many users.
Cons of buying a ALCO SW-251 Emerson Pushbutton Switch:1. Limited Customization: The switch is available in a limited range of colors and styles, which may not meet all users' aesthetic preferences.
2. Operational Noise: The switch may produce a clicking sound when operated, which may be bothersome in some applications where silence is important, such as in medical or library settings.
3. Limited Functionality: The switch does not offer any advanced features, such as digital displays or programmable settings. It is a basic switch designed for simple on/off applications.
Conclusion:The ALCO SW-251 Emerson Pushbutton Switch is a reliable, cost-effective, and versatile option for users looking for a basic switch for their industrial or DIY projects. Its durability and ease of installation make it a popular choice for many users. However, its limited customization options and operational noise may be a drawback for some users. If you are looking for a switch with advanced features or a more aesthetically pleasing design, you may want to consider other options. If you are looking for a simple, high-quality switch that is easy to install and use, the ALCO SW-251 is a great choice.
Recommendation:If you are looking for a basic switch that is reliable, cost-effective, and easy to install, the ALCO SW-251 Emerson Pushbutton Switch is a great option. It is suitable for industrial applications, DIY projects, and quick repairs. However, if you require a switch with advanced features or a more aesthetically pleasing design, you may want to consider other options. Ultimately, the best switch for you will depend on your specific needs and preferences.
Details:
Mara industrial id: 86, Alco SW-251 emerson pushbutton sw251 - used, pn: SW-251, sw251, normally closed / closed6a 230v ac.
specifications indusswitch:
- brand: Alco
- mpn: Sw-251
- button color: Red
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Pushbutton Switches
seller indusswitch:
- # reviews: 50691
- city: port sanilac, michigan
- rating: 99.8%
shipping indusswitch:
- service: usps first class, ups ground, ups 2nd day air, ups next day air
- type: calculated
- carrier: usps, ups
- transit: 5-7 days
- class: standard, expedited, one-day
returns indusswitch:
- policy: returns accepted
- time: 30 days
- paid by: buyer
- method: money back
payments indusswitch:
- other
- wallet: google-pay
- credit card: discover
offer indusswitch:
- sold #: 27
- in stock #: 5
- prices: $6.95–$175.00
- item condition:
- New
- For parts or not working
- Used
- New – Open box
- availability: in stock
- options: ship-to-home
- started: july 20, 2024
















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