
12T939 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $62.95 | Condition is New, NEW DAYTON 12T939 WOBBLE STICK LIMIT SWITCH, FREE SHIPPING | 100.0% |
![]() | $78.69 | Top Pick! Condition is New, Dayton 12T939 Limit Switch, Wobble Stick, Spdt, 10A At 300V Ac, Actuator, FREE SHIPPING | 99.8% |
![]() | $79.99 | Condition is New, Dayton 12T939 Limit Switch, Wobble Stick A300/Q300, 12T938 **Free Shipping**, FREE SHIPPING | 99.6% |
![]() | $81.99 | Top Pick! Condition is New, Dayton 12T939 Limit Switch, Wobble Stick A300/Q300, 12T938 **Free Shipping**, FREE SHIPPING | 100.0% |
![]() | $90.39 | Top Pick! Condition is New, DAYTON 12T939 Limit Switch, Wobble Stick, SPDT 12T939, FREE SHIPPING | ![]() |

The Dayton Wobble Switch with Model Numbers 12T939 and 12T938, manufactured by Dayton Parts, is a versatile and easy-to-use limit switch designed specifically for use with Dayton A300 and Q300 Series compressors. This switch is essential for ensuring safe and efficient operation of your compressor system.
The Wobble Switch is engineered with a unique design that allows it to pivot and adjust to various compressor positions. The switch features a durable, steel construction with a black, powder-coated finish that not only looks great but also provides excellent resistance to wear and corrosion. The switch arm, or "wobble stick," is designed to oscillate or "wobble" with the compressor's movement, allowing for accurate and reliable contact with the limit switch's terminal as the compressor reaches its end position.
The switch has two terminals, marked as "COM" (Common) and "NO" (Normally Open), making it easy to integrate with most compressor control systems. When the compressor reaches its end position, the wobble stick makes contact with the NO terminal, completing the circuit and signaling that the compressor has reached its limit. Once the compressor moves back to its starting position, the wobble stick breaks contact with the NO terminal, allowing the circuit to open and the compressor to start again.
The Dayton Wobble Switch is designed to meet the rigorous demands of industrial and commercial compressor applications. It is compatible with Dayton A300 and Q300 Series compressors and can be used as a replacement for worn-out or failed limit switches. The switch is easy to install, requiring no additional tools or modifications to the compressor. Simply replace the old switch with the new Dayton Wobble Switch and ensure safe and efficient operation of your compressor system.
In summary, the Dayton Wobble Switch with Model Numbers 12T939 and 12T938 is a high-quality, durable, and versatile limit switch designed for use with Dayton A300 and Q300 Series compressors. Its unique wobble stick design allows for accurate and reliable contact with the terminal, ensuring safe and efficient operation. Its durable steel construction with a powder-coated finish provides excellent resistance to wear and corrosion, making it a reliable and long-lasting solution for your compressor limit switch needs.
Pros and Cons of Buying Dayton 12T939 Limit Switch with Wobble Stick (A300/Q300 12T938)
1. **Pros:*** **Adjustable:** The wobble stick feature allows for easy and precise adjustment of the limit switch, making it suitable for various applications and environments.
* **Versatile:** This limit switch can be used in both 120V and 277V applications, expanding its usability.
* **Reliable:** Dayton is a reputable brand known for manufacturing high-quality electrical components, ensuring the durability and dependability of this product.
* **Affordable:** Compared to other brands' limit switches with similar features, the Dayton 12T939 is more cost-effective.
2. **Cons:*** **Installation:** The installation process might be more complicated than a standard limit switch due to the wobble stick feature.
* **Limited Applications:** While the switch is versatile in terms of voltage, it might not be suitable for specific industrial applications that require more advanced features or heavy-duty construction.
**Conclusion:** The Dayton 12T939 limit switch with wobble stick (12T938) is an excellent choice for those who require a precise and adjustable limit switch for their electrical projects. Its affordability, versatility, and reliability make it a worthwhile investment. However, potential buyers should consider their specific application requirements and the additional installation complexity before making a purchase.
**Recommendation:** If you're looking for a limit switch with an adjustable feature for residential or commercial electrical projects, the Dayton 12T939 is a great option. Its affordability and versatility make it a cost-effective and reliable solution. However, if you need a limit switch for heavy-duty industrial applications, it might be worth considering more advanced and expensive alternatives.
Details:
Experience seamless operation with the Dayton 12T939 limit switch, specifically designed for use wobble stick model's A300 and Q300. This switch is a vital component for ensuring your equipment's functionality and safety settings. Trust in the quality of Dayton brand to keep your operations running smoothly. The products mpn includes 12T939 and 12T938, ensuring compatibility ease of replacement.
Precision engineering ensures reliable performance for your industrial applications.
specifications indusswitch:
- brand: Dayton
- mpn: 12t939
- part type: Switch Stick
seller indusswitch:
- rating: 99.2%
- # reviews: 8936
- city: clermont, florida
offer indusswitch:
- in stock #: 5
- options: ship-to-home
- sold #: 18
- started: may 9, 2025
- availability: in stock
- prices: $62.95–$90.39
- item condition: New
shipping indusswitch:
- carrier: usps
- service: usps ground advantage
- type: calculated
- transit: 4-10 days
- class: standard
returns indusswitch:
- paid by: buyer
- time: 30 days
- method: money back
- policy: returns accepted
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Limit Snap Action Switches
payments indusswitch:
- wallet: google-pay
- other
- credit card: discover
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