Littelfuse 111P Single-Phase PumpSaver Plus Product Description

The Model 111P (115 volt, 1/3 to 1hp) Single-Phase PumpSaver®Plus is a pump monitor designed to protect single-phase pumps from dry-well, dead-head, jammed impeller, overvoltage/undervoltage conditions and now rapid-cycle protection whether the pressure switch is mounted before or after our unit.

A calibration adjustment allows the Insider to be calibrated to your specific pumping applications, thereby reducing the possibility of false or nuisance tripping. A unique microcontroller based voltage and current-sensing circuit constantly monitors the incoming power for fluctuations, overcurrent, and undercurrent. When an abnormality, such as loss of suction is detected, the product deactivates its output relay and directly disconnects the pump motor. The relay then begins its user selectable restart delay (dry-well recovery) timer. When the timer counts to zero or power is removed and reapplied, the relay reactivates its output relay and turns the pump back on.

The relay communicates with a hand-held diagnostics tool called the Informer (sold separately). The Informer displays parameters including calibration points, trip points, run time and last faults.

Littelfuse 111P Single-Phase PumpSaver Plus Typical Application

• Well Pump
• Reservoir Pump
• Transfer Pump
• Sewage Pump

Littelfuse 111P Single-Phase PumpSaver Plus Technical Details

• 115V, Single Phase
• 1/3 - 1.0 HP Pumps
• Protect Single Phase Pumps From the Following Conditions: Run Dry, Dead Head, Jammed Impeller, Rapid-Cycle, Overvoltage, and Undervoltage
• Calibrated for Specific Pumping Applications
• Automatic Timeout and Pump Restart
• Compatible with the Hand Held Tool Called the Informer

SymCom 111P Single-Phase PumpSaver Plus Specifications

Adjustments/Settings

• Overcurrent . . . . . . . . . . . . . . . . . . 125% of calibration point
• Underload (dry-well) . . . . . . . . . . . Adjustable (70 to 90% of calibrated run power)

Overvoltage . . . . . . . . . . . . . . . . . . . . . 132.5VAC

Undervoltage . . . . . . . . . . . . . . . . . . . . 95VAC

Number of Restarts Allowed in a 60-sec. Period (rapid-cycling) . . . . . . . 4

Trip Delay Time

Restart Delay Times

Input Characteristics

Output Characteristics

Maximum Input Power . . . . . . . . . . . . . 5 W

Wire Size . . . . . . . . . . . . . Solid or Stranded 10 - 22AWG

Terminal Torque . . . . . . . . . . . .13 in.-lbs

Safety Marks

• cULus Listed . . . . . . . . . . . . . . . . . . . . . .UL508, C22.2 No. 14

Weight . . . . . . . . . . . . . . . . . . . . . . . . 14 oz.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Littelfuse 111P Single-Phase PumpSaver Plus Resources

Littelfuse 111P Product Specifications

Littelfuse 111P Installation Bulletin

Littelfuse 111P Engineering Specifications