SJE MicroMaster® SPDT

International Product

micromaster plus ws
This mechanically-activated, wide-angle switch provides automatic control of pumps in:
  • Water
  • Sewage applications
These pump switches are not sensitive to rotation or turbulence allowing them to be used in both calm and turbulent applications.
micromaster plus ws


  • Flexible SJOW, water-resistant (CPE) cable
  • High impact, corrosion resistant, polypropylene float housing
  • Temperature rating up to 60º C (140º F)
  • Maximum water depth of 9 meters (30 feet) or 90 kPa (13 psi)
  • IPX8 enclosure rating
  • Float dimensions: 7.0 cm diameter x 12.3 cm long (2.74 inch x 4.83 inch)
  • Suitable for Catagory II installations
  • Protected by double insulation
  • Adjustable pumping range of 20 to 91 cm (8 to 36 inches)
  • UL Recognized, CSA certified. CE units available by request
Note: These switches are not recommended for controlling electrial loads less than 100 mA, 12 VAC. Must be used with pumps that provide integral thermal overload protection


  • Voltage 50 Hz/60 Hz Single Phase: 125/250 VAC
  • Maximum Pump Running Current: 10 amps
  • Maximum Pump Starting Current: 60 amps
  • Cable 18 gauge, 3 conductor

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