SJE-Rhombus International Product Details

  • Product Info
  • en Español
  • Features
  • Specs
  • Downloads

Model 122

Single Phase Duplex Alternating Pump Control with Override

The Model 122 Build-A-Panel™ control panel provides greater flexibility by ordering through options, allowing you to customize a standard panel to your specific needs.

The Model 122 control panel is designed to control two alternating 120/208/240V single phase pumps in water and sewage installations.

The alternating action equalizes pump wear.  In addition, this system provides override control should either pump fail.  If an alarm condition occurs, an alarm switch activates the audio/visual alarm system. 

Common applications include pump chambers, sump pump basins, irrigation systems and lift stations.

Modelo 122

Panel de Control monofásico Dúplex con alternación y anulación

Build-A-Panel™ Modelo 122 proporciona flexibilidad al ordenar a través de opciones, que le permite personalizar un panel estándar a sus necesidades específicas.

El panel de control Modelo 122 está diseñado para controlar y alternar dos bombas monofásicas de 120/ 208 / 240V en instalaciones de agua y aguas residuales.

La alternación iguala el desgaste de las bombas. Además, este sistema proporciona un control de anulación al ocurrir una falla en cualquiera de las bombas. Si se produce una condición de alarma, un interruptor de alarma activa el sistema de alarma de audio / visual.

Las aplicaciones más comunes incluyen bombas en tanques, bombas de sumidero, sistemas de riego y estaciones de bombeo.



Model 122

Panel Features: 

  • Choice of NEMA 1 (indoor) or NEMA 4X (indoor/outdoor) enclosure
  • Red alarm beacon provides 360o visual check of alarm condition (NEMA 1 style uses a door mounted indicator in lieu of a beacon)
  • Alarm horn provides audio warning of alarm condition (NEMA 1 style uses an internally mounted buzzer in lieu of a horn)
  • External alarm test/normal/silence switch allow horn and light to be tested and horn to be silenced in an alarm condition; alarm automatically resets once alarm condition is cleared
  • Horn silence relay
  • Magnetic motor contactors control pumps by switching electrical lines
  • Hand/Off/Automatic (HOA) switches for manual pump control
  • Control circuit board provides pump control and alternation
  • Float status indicator lights
  • Control and alarm power indicator lights
  • Auxiliary alarm contact, form C
  • Green pump run indicator lights
  • Circuit breakers (optional) provide pump disconnect and branch circuit protection
  • Ground Lugs


  • For a complete listing of available options, please view the backside of the catalog page.

UL/cUL Listed

Five-Year Limited Warranty



Model 122

25.4 x 25.4 x 15.24 cm (10 x 10 x 6 inches)
Choice of NEMA 1 (steel for indoor use) or NEMA 4X (ultraviolet stabilized thermoplastic with removable mounting feet for indoor/outdoor use)

83 - 85 decibel rating


Available Downloads

Adobe Acrobat is a free download to view .pdfs

Visit our downloads section of this website for additional literature.

USA  French Canadian  Chinese

French  German  Italian  Spanish