Dry run protection / Flow switches

Dry run protection DRP-1

The dry run protection DRP-1 is suitable
for 230 Volt centrifugal pumps.

Installation: vertical in the pressure line

The DRP-1 shuts off the Pump automatically while dry running and the red lamp pump off lights.
Put back into operation manually by pressing the release button.

ATTENTION: A Shutdown can be only done under 0.6 bar pressure!

technical Data:

  • Pump motor: 230 Volt - 50 Hz
  • Max. Ampere: 10 A
  • Suitably pressure range: 0,6 - 6 bar
  • Connection: 1" Male (Input) - 1" Female (Output)
  • Scope of delivery: 1,2 mtr. Cable H07RN-F 3 x 1,0 mm² with plug

Flow switch Flowmatic H10AR

Dry running protection for centrifugal pumps

The flow switch is installed in a tee in the pressure line.
The medium flowing through acts on the paddle and
actuated thereby a magnetic switches. Delay of 0-10 sec.
The paddle can be adjusted by shortening the corresponding pipe size.

  • Liquid temperature: max. + 100 °C
  • Operating pressure: max. 8 bar
  • Connection: 1" Male
  • For pipe diameter: 1" - 4"
  • Minimum flow: 20 ltr./min.
  • Voltage: 230 Volt
  • Ampere: 10 (4) A, 230 Volt
  • Version: Changer
  • Installation position: horizontal or vertical



Level control system

Submersible electrode EL-S and electrode cables

Single pole submersible electrode made of stainless steel in a plastic housing for water.
Suitable for temperature range 0°C to + 60°C.

For self terminal by bolting. dense nut, cutting ring and O-ring the line connection reliable and waterproof from.

Electrode cable

Single core electrode cable H07RN-F 1.5 mm² (NSH 1,5 mm²)
(optionally available!)

Electrode level relay CM-ENE MIN/MAX

to connect 2 electrodes (C and MIN/MAX),
1 NO contact

Level relays the levels of conductive liquids can monitor.
The single-pole electrodes act as probes. They are in the to be monitored immersed medium and detect a change in resistance when they are wetted or de-wetting.

CM-ENE MIN: monitors the filling level with respect to a Minimum level (on the monitoring of pump controllers Dry running - bottom switched off)

CM-ENE MAX: can be used to follow-up of pump controls be used
(top switched off)

  • Height: 88 mm
  • Voltage: 220 - 240 V AC

Electrode level relay IR-NW

For the connection of 2 electrodes for overfill or dry run monitoring or for connection of 3 electrodes for Min./Max.-Regulation.

technical Data:

  • Height: 57,6 mm
  • Width: 35 mm
  • Max. electrode voltage: 13 V AC
  • Low voltage protection according to DIN 57100/VDE 0100 Pkt. 4.1
  • Voltage: 230 - 240 Volt
  • Frequency: 50 - 60 Hz