Single Phase Duplex Demand WD1P-4 Wastewater panel

The WS Series® single phase duplex control panel will control two 120/208/240V single phase pumps designed for dewatering, wastewater, and sewage applications. See Water duplex control panels come standard with a clear front NEMA 4X rated enclosure, IEC rated contactors, and motor protective switch. All panels are UL listed for the United States and Canada, and come standard with a five-year warranty.

Model Voltage Full Load Amps
WD1P-4-1021 120/208/240 0-7.0
WD1P-4-1022 120/208/240 7.0-15.0
WD1P-4-1023 120/208/240 15.0-22.0
WD1P-4-1024 120/208/240 22.0-28.0
WD1P-4-1025 120/208/240 28.0-36.0

Note: Thermal overload protection is generally provided in single phase pumps. To request a specific overload on the Single Phase Models, contact the factory. Each panel includes a motor protective switch that will provide accurate pump circuit breaker protection.


  • UL listed for the United States and Canada (panel and controls)
  • Indoor/Outdoor NEMA 4X panel enclosure: heavy duty polycarbonate with stainless steel lockable latches
  • Duplex provides: Two pump alternation and high demand two pump operation
  • Pump control visible indicators: pump #1 and #2 hand-off-auto (H.O.A.) switch, green pump run lights, red pump fault lights with reset button and power on light
  • Alarm visible indicators: red beacon alarm light, alarm test and silence buttons
  • Alarm horn sounds at 85 decibels at 10 feet
  • Remote monitoring dry contacts: high liquid, pump run (s), pump #1 fault, and pump #2 fault
  • Upgraded pump protection: motor protective switches included for both pumps (branch circuit protection, adjustable overload and disconnect), and thermal cutout with indicators


  • Sewage pump chambers, grinder pumps, sump pump basins, and lift stations

Custom Options

  • AF = Alarm Flasher
  • LL = Low Level Alarm
  • SFD = Seal Failure Circuit w/ indicator lights
  • ETD = Elapsed Time Meter w/ LCD display & reset
  • CCD = Cycle Counter w/ LCD display & reset
  • D1 = 120V Dry Contacts
  • OP = Opaque front door
  • ST = Upgraded enclosure (Stainless Steel)
  • LAD/LAW = Lightning Secondary Surge Arrestor (LAD Delta / LAW Wye)
  • AH = Anti Condensation Heater
  • PM = Phase Monitoring
  • MD = Main Disconnect
  • FMD = Fused Main Disconnect
  • S3 = No floats option
  • 28 = Power On Dry Contact
  • 24 = Pump Exerciser
  • C = Additional cord length greater than 20’: Specify after C.
    Example:(WD3P-4-3021-C50) Indicates 50’ cord lengths for all floats
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