The float switch is a hollow float that works on the principle of upward force. This hollow float is lifted and pushed upwards by the rising liquid until the pump is activated at a 50° angle to the horizontal. The float can be attached by screwing it to the side or, if the tank is open, by placing it on top of the liquid. The switching point can be precisely defined thanks to the standard included ballast weight. Suitable for almost all pumps. The float switch is ideal for monitoring the filling level in all non-corrosive liquids, regardless of the degree of contamination. You can use this float switch as a full/empty indicator, to control pumps, valves or other alarm signals. If your pump has a power exceeding 1.1 kW, you must install a standard, commercially available power contactor or relay upstream. A 380/400V three-phase pump can be operated with a 380V power contactor. 5m 250V 16A Float Switch for Submersible Pump