SJE-Rhombus International Product Details

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SJE MicroMaster® Plus

Mechanically-Activated, Wide-Angle Pump Switch

Pump switches provide automatic pump control.

The SJE MicroMaster® Plus pump switch is designed for performance and dependability to directly control pumps in water and sewage applications.

The SJE MicroMaster® pump switch is not sensitive to rotation or turbulence, allowing it to be used in both calm and turbulent applications.

SJE MicroMaster® Plus

Interruptor de flotador para bombas, de ángulo amplio y activado mecánicamente.

El interruptor para bombas SJE MicroMaster® Plus está diseñado para controlar directa y automáticamente bombas en aplicaciones de agua y alcantarillado con gran rendimiento y fiabilidad.

El SJE MicroMaster® Plus no es sensible a la rotación o turbulencia, lo que permite que pueda ser utilizado tanto en aplicaciones de aguas calmadas y turbulentas.

Certificado UL y CSA

Cinco años de garantía limitada



SJE MicroMaster® Plus


  • Mechanically-activated, snap action contacts
  • High impact, corrosion resistant, polypropylene float housing
  • Adjustable pumping range of 20 - 91 cm (8 - 36 inches)


  • CE Compliant units available upon request
  • For pump up or pump down applications as specified by part number
  • With a 120/125 VAC or 230/250 VAC piggy-back plug
  • Without a plug for direct wiring in 120/125 VAC or 230/250 VAC applications
  • In standard cable lengths of 3, 5, 6, or 10 meters (10, 15, 20, or 30 feet) - longer lengths available
  • With an adjustable mounting clamp or cable weight

UL Recognized, CSA Certified

Five-Year Limited Warranty



SJE MicroMaster® Plus


Flexible 16 gauge, 2 conductor (UL, CSA) SJOW, water-resistant (CPE)

 7.0 cm diameter x 12.3 cm long (2.74 inches diameter x  4.83 inches long) high impact, corrosion resistance, polypropylene housing for use in water up to 60oC (140oF)

9 meters (30 feet) or 90 kPa (13 PSI)

125 VAC 50/50 Hz Single Phase:
Maximum Pump Running Current: 13 amps
Maximum Pump Starting Current: 78 amps

250 VAC 50/50 Hz Single Phase:
Maximum Pump Running Current: 13 amps
Maximum Pump Starting Current: 78 amps

NOTE: This switch is not recommended for controlling electrical loads less than 100 milliamps, 12 VAC or non-arcing electrical loads.  This switch must be used with pumps that provide integral thermal overload protection.


Available Downloads

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Visit our downloads section of this website for additional literature.

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