Wiltec Pressure Switch EPC-4 230V for Domestic Waterworks & Pumps Single-Phase Dry-Run Protection

With this pressure switch, you ensure a constant water pressure when using domestic waterworks, garden pumps, and other water pumps. The switch monitors the water pressure and turns off the pump as soon as the defined pressure is reached. If the pressure drops, the pressure switch ensures that the pump is turned back on.

Thanks to the pump control, you can automatically start and stop the water pump depending on the opening and closing of the respective consumer. In case of water shortage, the pump stops, and the dry run protection is activated.

The pump control consists of a hydraulic part and an interchangeable electronic part:

The hydraulic part includes:
• a shut-off valve
• a valve that responds to flow changes
• a molded and reinforced plastic body
• a membrane and spring that respond to pressure changes
• a safety valve to prevent water leakage in case of membrane damage

The electronic part includes:
• a sealed housing made of self-extinguishing, molded plastic
• a single, tested, and certified electronic board with insulated circuit paths
• a relay with a switching capacity of approximately 100,000 cycles in uninterrupted operation with a maximum load of 1.1 kW
• a varistor for voltage spikes

If your pump has a power rating of more than 1.1 kW, you should use a commercially available contactor or a corresponding power relay. A 380-V contactor can also control 380/400-V three-phase pumps.