331 Control Panel

3 Phase, 3 Voltages, 1 Panel

The 331 Control Panel is designed for three phase duplex pump applications (three voltages 208/240/480 VAC, one panel). The panel utilizes the robust DPC-4F controller which provides the pump control ON & OFF sequence, pump alternation selection, lag pump delay time, and highwater alarm and float out-of-sequence alarm conditions. Models available with intrinsically safe relay for circuit extension into hazardous locations.
331 panel


  • Padlockable wall mount NEMA 4X enclosure (stainless steel or fiberglass)
  • Single-point power connection (NE models include an additional 120V power connection for the alarm circuit)
  • IEC HP rated motor starter with adjustable overload module
  • 10HP max @ 208V; 240V
  • 20HP max @ 480V
  • Class 10 ambient compensated overload relay
  • Pump short circuit disconnect and overload reset accessible through the inner door
  • Tri-voltage step-down control transformer
  • Separate alarm/control fuses (NE models include separate breaker for circuit protection)
  • Override circuit to operate lag pump if lead fails
  • Alternator relay for even run time
  • 22mm pilot devices with engraved labels
  • Seal leak circuits for single or double probe pumps
  • Red flashing alarm beacon and audible horn (NE models include an amber beacon)
  • Pump run lights
  • Seal leak lights
  • Alarm silence/test push button
  • Hand-Off-Auto selector switches
  • Auxiliary contact
  • Overtemp shutdown for motor winding temperature switches (auto reset)
  • 16 AWG MTW control wire
  • Color coded control wires to aid in troubleshooting
  • Lag delay timing relay
  • Elapsed time meters
  • Standard 4 float operation (off, lead start, lag start, high level)
  • Waterproof electrical schematic affixed to the door
  • Document pocket for all component information

OPTIONS (customer installed)

  • Secondary surge arrestor with mounting bracket
  • Pedestal (painted steel, stainless steel, and aluminum)



  • 331SS Stainless Steel Wall Mount NEMA 4X Enclosure
  • 331FG Fiberglass Wall Mount NEMA 4X Enclosure
  • 331SS-NE Stainless Steel Wall Mount NEMA 4X Enclosure, Amber Beacon, Alarm Breaker
  • 331FG-NE Fiberglass Wall Mount NEMA 4X Enclosure, Amber Beacon, Alarm Breaker


  • 1033805 1.25 – 5.0 FLA
  • 1023500 4.5 – 18.0 FLA
  • 1033806 8.0 – 32.0 FLA

*Overload Modules sold separately; based on motor.

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