Water Tank Float Switch, Switch rating: 5A 230V AC

A float switch is a liquid level sensor that uses a buoyant object (a float) to operate an electrical switch when a fluid reaches a specific point. It is commonly used to automate pumps, valves, and alarms in residential and industrial settings.
Operating PrinciplesMost float switches work using one of two primary mechanisms:

• Magnetic/Reed Switches: The float contains a magnet. As it moves along a stem (vertical) or hinge (horizontal), the magnetic field actuates a hermetically sealed reed switch inside the body to open or close the circuit.
• Mechanical Switches: These use physical contact, such as a rolling steel ball inside a chamber, to trigger a microswitch when the float tilts to a certain angle.

Common Product TypesDepending on your tank configuration and the liquid's properties, different styles are available:

• Cable-Suspended Float Switches
  • 3MX Water Float Switch Sensor: A heavy-duty, shockproof switch for municipality or diesel tanks that uses a weight ring to set depth.
  • Havells HFS Series: A versatile model with a PVC cable used for automatically regulating water in sump and sewage pumps.
  • Sibass Electric Sinicon: Features a 1.25 sq. mm heavy-duty cable for high conductivity in industrial water management.
• Vertical-Mount Float Switches
  • ZENITRAIN Water Float Switch: A compact, space-saving design with a 2-meter cable, ideal for aquariums and tight tank setups.
  • VIGITAL Stainless Steel Switch: A dual-float, high-temperature resistant (up to 125°C) model suitable for harsh agricultural or cooling barrel environments.
• Horizontal/Side-Mounted Float Switches
  • uxcell ZPC1 Right Angle Switch: Specifically designed for side-wall mounting where the top or bottom of a tank is inaccessible.