
L20437 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $35.00 | Condition is New, FURNAS L20437 / L20437 FLOAT SWITCH ACCESSORY - STOCK GF785, FREE SHIPPING | 99.7% |

The Furnas L20437 Float Switch, GF785 is a reliable and efficient electrical appliance designed for use in various water level monitoring applications. This float switch is constructed with high-quality materials, ensuring durability and long-lasting performance.
The float switch operates on a simple principle: as the water level rises, the float attached to the switch rises as well, making contact with the switch and completing an electrical circuit. Conversely, when the water level drops, the float returns to its original position, breaking the contact and opening the circuit. This on/off function makes the Furnas L20437 Float Switch ideal for use in pump control, sump pump applications, and other water level monitoring systems.
The Furnas L20437 Float Switch is designed with a plastic float and a stainless steel switch body, making it resistant to corrosion and rust, even in harsh environments. The switch has a voltage rating of 120V AC, 60Hz, and a maximum current of 5A. The switch terminals are clearly marked, making installation and maintenance easy and straightforward.
The GF785 model of the Furnas L20437 Float Switch comes with a threaded mounting base, allowing for easy installation on pipes or other surfaces. The switch also features a built-in test button, enabling users to quickly and easily verify its functionality.
Overall, the Furnas L20437 Float Switch, GF785 is a versatile and effective water level monitoring solution for residential and commercial applications. Its durable construction, easy installation, and reliable performance make it a popular choice among professionals and DIY enthusiasts alike.
The Furnas Electric L20437 Float Switch GF785 is a popular choice for automatic water level control in various applications, including water heaters, sump pumps, and cooling towers. This device offers several advantages and disadvantages that can help potential buyers make an informed decision.
Advantages:1. Accurate water level sensing: The L20437 float switch is designed to detect changes in water level accurately, ensuring that your system maintains the optimal water level.
2. Durable construction: This float switch features a robust, corrosion-resistant housing, making it suitable for use in harsh environments.
3. Easy installation: The switch comes with a clear installation manual and is relatively easy to install, even for those without extensive electrical experience.
4. Versatile application: The L20437 float switch can be used in various applications, making it a versatile option for those with multiple systems requiring water level monitoring.
Disadvantages:1. Potential for false activations: In some cases, the float switch may trigger falsely, causing unnecessary cycles or energy consumption.
2. Limited temperature range: The switch is not designed for extreme temperature environments, which may limit its applicability in certain industrial applications.
3. May require adjustment: Depending on the application, the switch may need to be adjusted to ensure proper sensing and operation.
Conclusion:The Furnas Electric L20437 Float Switch GF785 is a valuable investment for those in need of an accurate and reliable water level control solution. Its durable construction, easy installation, and versatile application make it a popular choice among users. However, potential buyers should be aware of the potential for false activations and the limited temperature range. Ultimately, if the advantages outweigh the disadvantages for your specific application, the L20437 float switch is a solid choice.
Recommendation:If you're in the market for a float switch to maintain optimal water levels in your system, the Furnas Electric L20437 Float Switch GF785 is a worthwhile consideration. Its advantages, such as accurate water level sensing and durable construction, make it a strong contender. However, be sure to consider the potential disadvantages, such as false activations and limited temperature range, before making your final decision. Additionally, consult the installation manual carefully to ensure proper setup and operation.
Details:
Furnas L20437 / float switch accessory - stock GF785.
specifications indusswitch:
- brand: Furnas Electric Co
- mpn: L20437
- part type: Float Switch
- country of origin: United States
payments indusswitch:
- other
- credit card: discover
- wallet: paypal
offer indusswitch:
- best offers: true
- availability: in stock
- options: ship-to-home
- price: $35.00
- item condition: New
- in stock #: 1
- started: april 29, 2026
- sold #: 6
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Switches > Accessories
shipping indusswitch:
- service: fedex ground / fedex home delivery, fedex 2day, fedex priority overnight
- transit: 3-7 days
- class: standard, expedited, one-day
- type: calculated
- carrier: fedex
returns indusswitch:
- policy: returns accepted
- method: money back
- paid by: buyer
- time: 30 days
seller indusswitch:
- city: montgomeryville, pennsylvania
- # reviews: 3650
- rating: 99.8%
Also Purchased:
- 9115H89A: DRUM SWITCH, Cutler Hammer
- 50AA8E-S-: BUTTON STATION, Furnas
- 3SE5112-0CA00: SWITCH, Siemens Furnas Electric
- 49-672: STARTER SWITCH, Rockwell
- WR44: DRUM SWITCH, Furnas
- R108161: DRUM CONTROLLER SWITCH, Furnas
- WCWR109253U: DRUM SWITCH CONTROLLER, Furnas
- R1090: DRUM SWITCH, Furnas
- 69ES109049U: PRESSURE SWITCH, Furnas
- 52SA2AAB: SWITCH, Furnas
- 3TZ4-490-0C: RECTIFIER, Siemens Furnas Electric
