
316SB-STN-004-AAA Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $792.24 | Condition is New, 316SB-STN-004-AAA Pentair WestLock Controls Sealed , FREE SHIPPING | 99.8% |
![]() | $957.22 | Condition is New, WESTLOCK CONTROLS 316SB-STN-004-AAA / 316SBSTN004AAA (BRAND NEW), shipping cost = $12.90 | 99.7% |
![]() | $1015.53 | Condition is New, WESTLOCK CONTROLS 316SB-STN-004-AAA / 316SBSTN004AAA (BRAND NEW), shipping cost = $36.27 | 99.4% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $195.00 | Condition is New – Open box, WESTLOCK CONTROLS 316 Proximity sensor, shipping cost = $9.76 | 100.0% |

The Westlock 316SB-STN-004-AAA Bullet Position Limit Switch is a versatile and reliable solution for various automation applications. This switch, which features a 1/2 inch NPT thread connection, is constructed from high-quality 316 stainless steel material, ensuring durability and resistance to corrosion in harsh environments.
The Westlock 316SB-STN-004-AAA Bullet Position Limit Switch functions by detecting the position of a moving part and switching the circuit on or off accordingly. This makes it an ideal component for use in industrial machinery, HVAC systems, and water treatment facilities, among other applications.
The switch is designed with a bullet-style actuator that can be easily operated with a hammer or other impact tool. It features a limit position adjustment screw, allowing for precise setting of the switch's activation point. This customization capability is a significant advantage, as it enables the switch to be calibrated to meet the specific requirements of various applications.
The Westlock 316SB-STN-004-AAA Bullet Position Limit Switch is also notable for its high contact rating, which ensures reliable and consistent switching performance even under heavy use. The switch is rated for a maximum current of 3 Ampere and a maximum voltage of 240 Volts AC, making it suitable for a wide range of applications.
Additionally, the switch comes with an IP66 rating, which indicates that it is protected against dust and water jets from all directions. This feature makes it an excellent choice for use in outdoor or wet environments, where exposure to the elements is unavoidable.
In conclusion, the Westlock 316SB-STN-004-AAA Bullet Position Limit Switch is a robust and versatile component that offers precise position sensing and reliable switching performance. Its high-quality stainless steel construction, adjustable activation point, and IP66 rating make it a wise investment for various industrial and automation applications.
The Westlock 316SB-STN-004-AAA Bullet Position Limit Switch 1/2in NPT is a pneumatic device designed to operate in applications where limiting the travel of a pneumatic cylinder is necessary. Here are some potential pros and cons of purchasing this product:
Pros:1. Durable Construction: This switch is made of 316 stainless steel, which is known for its corrosion resistance. This makes it an excellent choice for applications in harsh environments.
2. Versatile: The Westlock 316SB-STN-004-AAA switch comes in various configurations, including different stroke lengths and mounting options, allowing it to be used in a wide range of applications.
3. Reliable: The switch has a positive actuation mechanism, which means it will reliably switch states when the cylinder reaches the desired position.
4. Easy to Install: The switch comes with a clear marking for the limit position, making it easy to install and set up.
5. Fail-Safe Operation: In the event of power failure, the switch returns to its default position, ensuring safety.
Cons:1. Cost: Compared to some other limit switches, the Westlock 316SB-STN-004-AAA switch may be more expensive due to its high-quality materials and construction.
2. Limited Operating Pressure: The switch is rated for a maximum operating pressure of 10 bar (145 psi), which may not be sufficient for high-pressure applications.
3. Requires Regular Maintenance: Like any pneumatic component, the switch may require regular maintenance to ensure optimal performance.
Conclusion:The Westlock 316SB-STN-004-AAA Bullet Position Limit Switch 1/2in NPT is a high-quality, reliable, and durable product that is well-suited for applications in harsh environments where corrosion resistance is essential. Its versatility, easy installation, and fail-safe operation make it an excellent choice for many industrial applications. However, its higher cost compared to some other limit switches may be a consideration for some buyers.
Recommendation:If you require a limit switch in a harsh environment where corrosion resistance is a priority, or if you need a switch that is versatile and reliable, the Westlock 316SB-STN-004-AAA Bullet Position Limit Switch 1/2in NPT is a strong recommendation. However, if cost is a significant factor, you may want to consider other options that may be more cost-effective, but may not offer the same level of durability and reliability.
Details:
specifications indusswitch:
- brand: Westlock
- mpn: 316sb-stn-004-aaa
- part type: Switch
- reference sku: 1754639
payments indusswitch:
- other
- wallet: google-pay
- credit card: diners-club
shipping indusswitch:
- type: fixed
- transit: 4-4 days
- service: standard, expedited, overnight
- class: standard, expedited, one-day
returns indusswitch:
- policy: returns accepted
- method: money back
- paid by: seller
- time: 30 days
offer indusswitch:
- prices: $792.24–$1015.53
- item condition:
- New
- New – Open box
- in stock #: 4
- options: ship-to-home
- started: march 30, 2026
- best offers: true
- sold #: 18
- availability: in stock
seller indusswitch:
- city: delta, ohio
- rating: 100.0%
- # reviews: 126188
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Limit Snap Action Switches
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- 9479-JHC: ROTARY MONITOR SWITCH BOX, Westlock



