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Description
Specifications
| Brand | Littelfuse |
| Hertz | 50/60 Hz |
| Mounting | Chassis, Control Box |
| UPC | 07945899030 |
The Littelfuse 231-Insider-P fits inside 1/3, 1/2, 3/4 and 1 hp, 230V 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.
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