Collection: Control panels & motor protection

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Motor protection for pumps without a plug

A 400 V pump is often supplied with a free cable end: the protection is up to you. That is not a formality. Without the prescribed protection the motor burns out on a blockage or a lost phase, and the warranty will not cover the damage.

What to look for

  • The pump's rated current. It is on the rating plate. The protection needs a setting range with that value in the middle of it, and you set it to the pump — not to the fuse of the circuit.
  • Plug or panel. A motor protection plug combines switch and protection in one CEE plug: quick, mobile, no installation work. Choose a control panel for a fixed installation, two pumps or a level control.
  • Phase sequence. A three-phase pump running the wrong way round delivers hardly any flow and eventually fails. Versions with phase-sequence monitoring or a phase inverter take that problem away.
  • Protection rating and siting. The panel belongs in a dry, ventilated space. If it has to go outdoors, mind the IP rating and direct sunlight.
  • Wiring. This is work for an electrician. Have the connection and the setting recorded, so you know where you stand if there is a fault.

If the installation also has to measure and report the level, look at the control systems. Not sure of the rated current? Send us the pump type via contact or call 085 - 210 08 97.