234-P - 234 Series

Series: 234 Questions? Contact Littelfuse Support
littelfuse Motor and Pump Protection Relays
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The PumpSaver® Model 234-P protects singlephase pumps from dry-well, dead-head, rapid-cycle, jammed-impeller, and over/undervoltage conditions. Typical applications include residential waterwells, commercial waterwells, irrigation wells, and golf course and other sprinkler systems. The PumpSaver® Model 234-P is designed to be mounted inside a Grundfos™ control box to protect 1/3–3hp, 2- or 3-wire, 230V pumps. An infrared LED communicates directly with a handheld diagnostic tool called the Informer (sold separately).
Property (Mouseover for details) Value
Input Voltage (V) 230VAC
Input AC Line Frequency (Hz) 50/60Hz (50Hz will increase all delay timers by 20%.)
Input Load Range (hp) 1/3 - 3 hp
Output Form SPST
Output Load Rating (VA) 3 hp @ 240VAC (17 amps max.)
Rapid Cycle Timer (s) 4 restarts allowed in 60s period
Restart Delay Range Over/Under Voltage: 2s; All other faults: Manual 2 - 225m
Trip Delay Range Overcurrent: 5s; Dry-well: 4s
Overvoltage Trip Voltage (%) 265VAC
Undervoltage Reset Voltage (%) 190VAC
Overcurrent Trip Class 125% of calibration point
Underload (%) Adjustable (70 to 90% of calibrated run power)
Power Consumption ≤5W
Mounting Method Inside a Grundfos® control box
Operating Temperature -40° to 70°C (-40° to 158°F)
Weight (lbs/g) 0.88 lb. (14.0 oz. 396.9 g)