Rule-A-Matic® Float Switch

  • Turns pump on when water level reaches 51mm
  • Turns pump off when water level reaches 19mm
  • Removeable snap-on base for easy fitting, servicing and cleaning
  • It is suitable for pumps of any voltage up to a maximimum pump draw of 14 amps
  • It suits all Rule non-automatic pumps (except the 3700 & 4000GPH 12v pumps)
  • 2 year limited warranty
  • Full wiring and installation instructions are supplied with the unit
  • Rule Automatic Float Switches are the world's largest selling float switches.
  • They are designed to automatically activate your Non-Automatic bilge pump when water is present.
  • They are simple, non-mercury, envoironmentally responsible switches. All are ignition protected,
  • ultrasonically welded and sealed, to give reliable, trouble-free service. The wiring is blocked to keep out
  • moisture and exits the top of the switch to keep them high and dry.
  • No battery drain and no exposed metal to corrode.


Base footprint: 66 x 45mm

Length: 127mm

Width: 45mm

Model: 35A

Max: 14amp for 12 Volts

Max: 7amp for 24 Volts

Max: 5amp for 32 Volts

Wire Length: 28"

Wire Gauge Size: 16


Model # RWB22
Barcode # 42237095435
Brand RULE
Shipping Weight 0.1600kg
Shipping Width 0.120m
Shipping Height 0.080m
Shipping Length 0.220m
Shipping Cubic 0.002112000m3

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