Littelfuse 111-Insider-P Single-Phase PumpSaver Plus Product Description

The Littelfuse 111-Insider-P single-phase products fit inside 1/3 and 1/2 115V control boxes and are designed to protect single-phase pumps from dry-well, dead-head, jammed impeller, rapid-cycle, overvoltage, and undervoltage conditions.

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. By leaving the restart delay knob in the reset position, the relay will operate in manual reset mode.

The Insider 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. An IR Kit-12 (12” fiber optic kit) is included with each Insider, allowing the Informer to access these parameters even when the Insider is enclosed in a control box. This is valuable for troubleshooting the pump while it is running.

Littelfuse 111-Insider-P Single-Phase PumpSaver Plus Typical Application

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

Littelfuse 111-Insider-P Single-Phase PumpSaver Plus Technical Details

• Installs Directly in the Pump Control Box
• 115 Volt, Single Phase
• 1/3 - 1/2 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

Littelfuse 111-Insider-P 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

Safety Marks

• cUR* . . . . . . . . . . . . . . . . . . . . . .UL508, C22.2 No. 14

Weight . . . . . . . . . . . . . . . . . . . . . . . . 10 oz.

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

Littelfuse 111-Insider-P Single-Phase PumpSaver Plus Product Resources

Littelfuse 111-Insider Product Specifications

Littelfuse 111-Insider Installation Bulletin

Littelfuse 111-Insider Engineering Specifications