Product Description
SJE PumpMaster SPDT Float Switch – 3-Wire Wide Angle Float for Pump Up or Pump Down ApplicationsReliable, Mercury-Free Float Switch for Versatile Pump ControlThe SJE Rhombus PumpMaster SPDT is a wide-angle, mechanically activated float switch that delivers reliable, mercury-free performance for both pump up and pump down operations. Designed with a three-wire, Single Pole Double Throw (SPDT) configuration, this float is engineered for professionals managing water levels in sump pits, septic tanks, holding tanks, and lift stations—making it ideal for municipal, industrial, and residential systems alike.With a wide adjustable pumping range (7" to 36") and the ability to control 120V pumps up to 1/2 HP or 240V pumps up to 1 HP, this float switch handles tough jobs with ease. The mechanical design offers a high starting current rating (85 amps) and performs reliably in both calm and turbulent water conditions.Key Features: Built for Pumping Power & Flexibility
Direct Pump Control: Supports 120V pumps up to 1/2 HP and 240V pumps up to 1 HP
SPDT 3-Wire Design: Can be wired as either normally open (pump down) or normally closed (pump up)
Wide Adjustable Pumping Range: 7" to 36", offering maximum installation flexibility
Mercury-Free Mechanical Activation: Safe and environmentally responsible
High Starting Current Rating: Up to 85 amps, perfect for high-demand start-up loads
Rugged Construction: High-impact, corrosion-resistant PVC float housing
Reliable in Any Environment: Works in both still and turbulent water applications
UL, CSA, and NSF-61 Certified: Approved for potable water and sewage use
Multiple Cable Length Options: Available in 15', 20', or 30' lengths
5-Year Manufacturer Warranty: Long-term reliability you can trust
Expand Your Pump Control System
SJE PumpMaster Plus – Piggyback Plug Version
Ideal for plug-and-play setups with no hardwiring required.
Float Switches & Accessories
Explore our full selection of float switches, weights, mounting brackets, and cable accessories.
Tank Alarm Systems
Need monitoring? Pair this switch with a high/low level alarm panel for reliable alerts.
Upgrade to SPDT Precision with the SJE PumpMasterWhether you're automating a sump pump or maintaining water levels in a critical system, the SJE PumpMaster SPDT float switch gives you unmatched versatility, reliability, and control. Its high-quality, non-mercury design is trusted across the municipal, utility, agricultural, and wastewater sectors. Upgrade your pump system with confidence and enjoy worry-free operation backed by SJE Rhombus’ 5-year warranty.
Specifications
Temperature Range
Up to 140°F (60°C)
Cable
Flexible 16 GA, 3 conductor (UL, CSA) SJOW, water-resistant (CPE)
Float Dimensions
3.05 inch diameter x 3.56 inch long (7.75 x 9.04 cm)
Float Material
High impact corrosion resistant PVC housing for use in sewage and water
Maximum Water Depth
33 feet (10 meters), 13 PSI (90 kPa)
125 VAC 50/60Hz Single Phase
Maximum Pump Running Current: 13 amps
Maximum Pump Starting Current: 85 amps
Recommended Pump HP: 1/2 HP or less
230 VAC 50/60 Hz Single Phase
Maximum Pump Running Current: 13 amps
Maximum Pump Starting Current: 85 amps
Recommended Pump HP: 1 HP or less
Free shipping. Usually ships same or next day. 
