Electric Level Float Switches
An electric float switch (cable float switch) hangs from its cable and tilts up and down with the liquid level, changing a contact inside the float to start and stop a pump. The free cable length between the fixing point and the float sets the operating range.
General-purpose and wastewater (sewage) models are available; the store range includes floats with PVC or rubber cables from 1.6 m to 10 m. Changeover contact models can be wired for both filling and emptying.
Main Applications
- Drainage and emptying with submersible pumps
- Water tank filling control
- Wastewater and septic pits
- Rainwater and leak pits
- Dry-run protection on booster tanks
Technical Data
| Float body | Polypropylene (PP) |
|---|---|
| Cable | PVC or rubber; 3×0.75 mm² or 3×1 mm² (by model) |
| Cable length | 1.6, 3, 5, 10 m (product range) |
| Operating voltage | 250 V AC, 50 Hz |
| Contact | 10 A – 250 V AC, NO / NC changeover |
| Protection class | IP68 |
| Operating temperature | −25 °C … +60 °C |
| Max. pressure | 10 bar |
| Setting distance | Up to 750 mm |
| Models | General purpose, wastewater, pear type (product range) |
Material Options
| Part | General purpose | Wastewater model |
|---|---|---|
| Float | PP | PP (by model) |
| Cable | PVC or rubber | PVC or rubber |
| Contact | 10 A / 250 V AC | By model |
| Use | Clean water and tanks | Sewage and solids-laden liquids |
Which material? A 10 A contact can run small single-phase pumps directly; larger and three-phase pumps must be connected through a contactor. For wastewater, choose the wastewater model that withstands solids.
Advantages
Direct Pump Control
- No contactor on small pumps
Fully Sealed
- IP68
Filling and Emptying
- Changeover contact
Long Cable
- Up to 10 m
Construction and Design Features
- PP float body
- Changeover switch inside
- PVC or rubber cable
- Cable weight or fixing clamp
Write the pump power, application (filling, emptying, wastewater) and cable length; we will confirm the right float switch.
How to Choose?
- Define the applicationChoose filling or emptying wiring.
- Select the modelUse the wastewater model in sewage.
- Set the cable lengthPick by the distance from panel to pit.
- Check the pump powerUse a contactor above 10 A.
Complementary Products
Why ORFA?
Other Level Control Devices
Alarm and Remote Monitoring Devices
Alarm and remote monitoring devices report the level status in tanks and wells by audible, visual or remote notification.
Details →
Glass Tube Level Gauge
Glass tube level gauges allow the liquid level inside a tank to be seen directly through a transparent glass tube.
Details →
Hydrostatic Level Transmitters
Hydrostatic level transmitters measure level from the pressure of the liquid column and provide a continuous signal.
Details →Capacitive Level Sensors
Capacitive level sensors detect the level of liquids and solids by changes in capacitance.
Details →Solids Level Switches
Solids level switches detect the level of powder and granular materials in silos and bunkers.
Details →
Boiler Proportional Level Controllers
Boiler proportional level controllers continuously measure the water level in steam boilers and adjust the feed water proportionally.
Details →
Boiler Level Switches
Boiler level switches detect low and high water levels in steam boilers and control the burner, pump or alarm.
Details →
Boiler Feed Water Level Controls
Boiler feed water level controls start and stop the feed pump according to the water level in the steam boiler.
Details →
Magnetic Level Indicators
Magnetic level indicators show the tank level by transferring the movement of a magnetic float to external indicator flaps.
Details →
Magnetic Level Transmitter
Magnetic level transmitters convert the position of a magnetic float into a continuous electrical signal.
Details →
Stainless Steel Level Switch
Stainless steel level switches are float level switches with stainless steel bodies suitable for corrosive and hot liquids.
Details →
Plastic Level Switches
Plastic level switches are economical float switches used in water and mild chemical tanks.
Details →Radar Level Transmitters
Radar level transmitters measure the level of liquids and solids without contact and provide a continuous signal.
Details →
Reflex Glass Level Gauges
Reflex glass level gauges show the liquid level clearly in steam boilers and pressure vessels.
Details →
Level Indicators
Level indicators allow the liquid level in tanks and vessels to be monitored on site.
Details →
Level Control Panels and Sensors
Level control panels and sensors are control systems that automatically start and stop pumps according to the level in tanks and wells.
Details →
Liquid Level Electrodes
Liquid level electrodes detect the level of conductive liquids by electrode contact and send a signal to the level relay.
Details →
Float Level Switches
Float level switches change contact by means of a float moving with the liquid level and control a pump or alarm.
Details →Float Valves
Float valves open when the water level in a tank drops and close when it is full, keeping the level mechanically.
Details →
Tank Level Switches
Tank level switches signal at set levels in storage tanks to control filling, emptying and alarms.
Details →Get a quote for your project
Our sales team will prepare the best solution for your needs.