UL Certification

Single Phase Duplex Demand WD1P-4 Wastewater panel

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Single Phase Duplex Demand WD1P-4

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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 switches. 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.

Add Pump Portal® remote pump monitoring to this control panel!     LEARN MORE


  • UL listed for the United States and Canada (panel and controls)
  • Indoor/Outdoor NEMA 4X rated 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
  • Lift stations

Custom Options

  • 24 = Pump Exerciser
  • 28 = Power On Dry Contact (Normally Open)
  • 3R = Painted Steel Enclosure
  • AF = Alarm Flasher
  • AH = Anti Condensation Heater
  • C = Additional Cord Length Per Foot Per Component*
  • CCD = Cycle Counter w/ LCD Display and Reset
  • CO = Convenience Outlet (User to supply 120 VAC)
  • ETD = Elapsed Time Meter w/ LCD Display and Reset
  • GR = Generator Receptacle, Includes Transfer Switch
  • ISD = Intrinsically Safe
  • LAD/LAW = Lightning Secondary Surge Arrestor (LAD Delta / LAW Wye)
  • LL = Low Level Alarm
  • MD = Main Disconnect; Up to 100 FLA
  • PM = Phase Monitoring
  • PX = Pump Portal® Wireless Remote System Monitoring
  • SFD = Seal Failure Circuit w/ Indicator Lights
  • S3 = No Floats Option
  • SS4 = Upgraded Enclosure (304 Stainless Steel)
  • SS6 = Upgraded Enclosure (316 Stainless Steel)

*Additional cord length greater than 20’: Specify after C. Example: (WD1P-4-1021-C50) Indicates 50’ cord lengths for all floats.

Get in Touch: 888.733.9283