RK Series™ Single Phase Duplex Capacitor Start/Run

Single Phase, Duplex Grinder with External Start/Run Capacitors

The RK Series™ Single Phase Duplex Grinder panel is designed to control two 230 VAC single phase pump with external starting components in water and sewage installations. The protective inner door features panel operating status indicators, control buttons and provides access to the pump and control circuit breakers.


  • NEMA 4X engineered thermoplastic enclosure with lockable latches
  • Flashing red 360° alarm beacon with horn, includes innovative touch to silence pad.
  • Float indication lights allow the user to see the status of each float and flashes should a float fail out-of-sequence.
  • Pump push to run with low level protection when activated manually
  • Includes easy access touch safe fuses
  • Timed dose control option available or can be easily retrofitted in the field
  • External capacitor kit components are installed for variety of pumps – consult factory when ordering
  • 3 year limited warranty
  • UL listed
  • Digital Interface Board (DIB)
  • Digital Display Center (DDC)


NEMA 4X enclosure rated for indoor or outdoor use
Lockable latches for added safety
360° red alarm beacon for visual alert
IEC motor contactors control the pump motor load by switching the electrical lines
IEC overloads to provide pump motor current overload protection
Circuit breakers provide pump and control/alarm disconnect and branch circuit protection
Capacitor kits includes start relay, start capacitor, run capacitor
Terminal strip easy field wiring of incoming power, floats, and pumps
Ground lugs
Molded inner door protects from high voltage, and mounting location for indicators, control buttons, and controller circuit board
Green LEDs provide power indication for control and alarm circuit power
Red LEDs provide indication when either control or alarm fuse is blown
Float status LEDs provide tank level indications (High Level – red, Pump Lag Start – yellow, Pump Start Level – green, Pump Stop Level – green)
Green Pump Run LED provides indication when pump is called to run
Pump Hand/Run button operates the pump manually
Alarm Test/Silence button
Red LED alarm indication for high water
Piezo audible alarm (not shown)

For models and specifications
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