Wells have been an important part of the human infrastructure for thousands of years. Water is essential for everyday life, and wells make it possible to rely on a clean, ready source of fresh drinking water right beneath one’s feet. While primitive wells rely on buckets and rope or another relatively simple machine to retrieve water from the bottom, more sophisticated ones use electronic pumps. Electronic well pumps use a variety of components to retrieve water from the bottom of the well. One of the most important in many pump systems is the float switch or other liquid level sensors.
Float Switches for Well Pump Applications
FN20 – Mechanical Sump Switches
Though designed for sump pumps, these switches are versatile enough to be useful for well pump or low-level alarm switches. They are ideal for direct pump control up to 1/2 HP at 120 VAC or 1 HP at 240 VAC. Standard features include a 20’ foot 16/2 SJOW Cable with 120 VAC plug and a stainless steel pipe clamp mounting assembly. Available in pump up or pump down configurations.
FT60 – Downhole Submersible Level Sensors
Where switches need particularly long lead-out lengths, submersible hydrostatic pressure sensors like the FT60 are perfect options. The FT downhole submersible liquid level sensor indicates the level of liquid by continuously measuring hydrostatic pressure with a sophisticated sensing element. While probably more powerful than that average homeowner would need, these are terrific units for large commercial operations. This is especially true where continuous level measurement in water wells or other large vessels is required.

