The selection includes budget models for private water supply systems and reinforced units for working in the most difficult conditions and aggressive environments.

The best float switches

The main purpose of these devices is to protect pumping equipment from «dry» running. The float switch can also act as an emergency level sensor and will be useful to prevent overfilling.

Reasons to buy:

• degree of protection — IP68;
• simple connection;
• durable materials;
• low price.

One of the features of the model was the increased length of the cable, which allows you to control the water level at a considerable depth. Reinforced insulation guarantees safe operation and durability of the device.

The maximum temperature of the environment is 35°C, the current consumption is 16 amperes. The switch is not afraid of frequent voltage drops, so it is stable.

Reasons to buy:

• long cable;
• simple connection;
• high class of protection;
• stable work;
• heat resistance.

This model is explosion-proof. The sensor is manufactured in accordance with international standards and is not afraid of operation in unstable environments or high temperature conditions. Protection class corresponds to IP68.

The total weight of the kit is 2.28 kilograms. The cable length is 20 meters, which guarantees the convenience of connecting the float switch to remote systems. The reinforced joint further increases the reliability of the sensor.

Reasons to buy:

• durable materials;
• reinforced insulation;
• heat resistance;
• long cable;
• works even in an inclined position.

The body of the model is made of dense polypropylene, which makes it resistant to sharp shocks, chemical and thermal effects. The maximum allowable liquid temperature is 80°C. The material is not afraid of operation in oil, gasoline, alcohol and other aggressive environments, which expands the possibilities of using the device.

The cable length is 10 meters. The insulation is made of PVC, does not lose its shape when stretched and does not wear out, so that it retains its quality for a long time.

Reasons to buy:

• high strength;
• tight insulation;
• simple installation.

The model has a durable plastic case and meets an increased protection class, which ensures its reliability and durability. The ability to work in water with temperatures up to 60 degrees expands the scope of the device.

The cable length is 3 meters. The switch is supplied with a weight, thanks to which you can quickly set the moment of operation of the contact group and start operation.

Reasons to buy:

• low price;
• simple connection;
• tight insulation;
• strong body.

A weight is included in the package along with the model, which allows you to quickly start using the switch. The high protection class guarantees the stability and reliability of the sensor.

The maximum allowable ambient temperature is 60°C, the rated current is 10 amperes. The robust housing is resistant to damage and wear. Reinforced cable insulation provides additional security.

How to choose a float sensor

To begin with, you should pay attention to the length of the cable — the possibility of using the device in deep tanks or wells depends on it. As a rule, for use at home, a length of about 5 meters is sufficient. But in any case, we advise you to purchase a model with a certain margin.

The maximum value of the binding current is determined by the operating parameters of the equipment with which the sensor will be connected. For pumps, fans or compressors, you can buy a device corresponding to a value of 8 amperes.

An important criterion is the operating temperature range, which affects the permissible operating conditions of the circuit breaker. In production, temperature resistance up to 80 degrees may be required. In a private house, a model with a range of 0 to 60 ° C is enough.

A mandatory requirement for devices of this type is tightness. The cable must be made of dense materials and meet an increased protection class.