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Honsberg - UR1 Series Flow Switch


  • Switching range 1,3..35 l/min
  • Water (oils, gases and aggressive media available on request)
  • G⅜" up to G2"
  • Brass or stainless steel wetted parts
  • Max pressure 25 bar

Product description

The Honsberg UR1 is a simple flow switch which can easily be adjusted and also changed from normally open to normally closed. The flow switch works via a spring-supported paddle which moves according to the flow and when the specific flow is reach a magnetic reed switch is activated.

Special versions

• Plastic materials
• Weld/solder connection
• High volume OEM version
• Ex

• Switching ranges for oil or gas
• Special values
• High volume OEM version
• PVC (solder fitting)



Articles Flow Max l/min Double Weight
10 l/min 0,35 kg
20 l/min 0,35 kg
40 l/min 0,35 kg
60 l/min 0,4 kg
80 l/min 0,45 kg
100 l/min 0,55 kg
150 l/min 0,8 kg


Flow sw. 3-3.5 l/min.G3/8


Contact Rating Max 50 A
Contact Rating Max 50 VA
Flow Max l/min Double 10 l/min
IP Class IP65
Material breaker body Hard ferrite
Material of body Nickel-plated brass, Stainless steel 303
Material of connection Nickel-plated brass
Material of seals NBR
Materials Paddle Stainless steel 301
Materials Wetted Parts Nickel-plated brass, Stainless steel, Hard ferrite, NBR
Pressure Range Max 25 bar
Temperature range of media from 20 °C
Temperature range of media to 110 °C
Type of flow component Flow Switches
Weight 0,35 kg
Viscosity 1 cSt
Voltage AC Max 230 V

Measurements and connections

Technical illustrations


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