Littelfuse 233P-ENCL, 233P Series, Single-Phase Pump Monitor, 230VAC, 1 Phase, 233P with NEMA3R enclosure

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The Littelfuse models 111P (115 volt, 1⁄3 to 1hp); 233P-1.5 (230 volt, 1⁄3 to 1.5hp); and 233P (230 volt, 1⁄3 to 3hp) are singlephase pump monitors used in a variety of application s to protect from dry-well, dead-head, jammed impeller, rapid-cycling,overvoltage, and undervoltage conditions. OperationA calibration adjustment allows the unit to be calibrated to your specific pumping applications, which reduces the possibility of false or nuisance tripping. A unique microcontroller-based voltage and current-sensing circuit constantly monitor the incoming power for fluctuations, overcurrent, and undercurrent conditions. 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 infrared LED 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. Applications• Pumps: submersible, centrifugal, circulating, cooling, environmental• Waterwells: residential, commercial, irrigation• Golf course systems• Sprinkler systems Specifications Functional Characteristics Adjustments/Settings: Overcurrent 125% of calibration point Underload (dry-well) Adjustable (70 to 90% of calibrated run power) Overvoltage 265VAC Undervoltage 190VAC Number of restarts allowed in a 60-sec. period (rapid-cycling) 4 Trip Delay Times Overcurrent 5 seconds Dry-well 4 seconds Restart Delay Times Over/Undervoltage 2 seconds All other faults Manual, 2-225 Minutes Input Characteristics Supply Voltage 230VAC Load Range 233P-1.5: 1⁄3 – 1.5 hp233P: 1⁄3 – 3 hp Frequency 50/60Hz (Note: 50Hz will increase all delay timers by 20%) Output Characteristics Output Contact Rating-SPST 233P-1.5: 1.5 hp @ 240 V ac (10 amps max.)233P: 3 hp @ 240 V ac (17 amps max.) General Characteristics Operating Temperature -40º to 55º C (-40º to 131º F) Maximum Input Power 5 W Wire Gauge Solid or Stranded 10 - 22AWG Terminal Torque 13 in.-lbs. Dimensions H 73.66 mm (2.9”)W 133.35 mm (5.25”)D 73.99 mm (2.913”) Weight 14 oz Mounting Methods #8 screws Certification & Compliance cULus Listed UL508, C22.2 No. 14 Show more