Name: 235P Series - Single-Phase Pump Monitor
Brand: Littelfuse Inc.

235P Series - Single-Phase Pump Monitor

Series: 235P

Questions? Contact Littelfuse Support

Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The Littelfuse 235P is designed to protect 5-15 hp, 230V, single-phase pumps from dry-well, dead-head, jammed impeller and overvoltage and undervoltage conditions. A calibration adjustment allows the 235P to be calibrated to your specific pumping applications, thereby reducing the possibility of false or nuisance tripping. A unique microcontrollerbased voltage and current-sensing circuit constantly monitors the incoming power for fluctuations causing overcurrent and undercurrent. When an abnormality, such as loss of suction is detected, the 235P deactivates its output relay and directly disconnects the pump motor.

The 235P 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 external current transformer is required for operation (sold separately).

Access specifications, certifications, check availability and order parts below

Catalog #	Input Voltage (V)	Input Load Range (hp)	Output Form	Termination Type	Mounting Method	Dimensions	Weight (lbs/g)	Overcurrent Trip Class	Input AC Line Frequency (Hz)	Maximum Input Power	Output Load Rating (VA)	Overvoltage Trip Voltage (%)	Rapid Cycle Timer (s)	Restart Delay Range	Trip Delay Range	Stock	Samples

235P	230 Vac	5 - 15 (external current transformer required)	SPST	Torque: 13 in-lbs; Wire: Solid or stranded 10 - 22 AWG	#8 screws	2.93 H x 5.25 W x 2.91 D in. (73.7 x 133.4 x 74 mm)	0 Kg	125% of calibration point	50 / 60 (50 will increase all delay timers by 20%)	5	A300; 720 VA @ 240 Vac (10 A max.)	265 Vac	4 restarts allowed in 60 s period	Over/Under Voltage: 2 s; All other faults: Manual; 2 - 225 m	Overcurrent: 5 s; Dry-well: 4 s	Check	Order
235P-ENCL	230 Vac	5 - 15 (external current transformer required)	SPST	Torque: 13 in-lbs; Wire: Solid or stranded 10 - 22 AWG	#8 screws	8.3 H x 5.36 W x 3.68 D in. (210.8 x 136.1 x 93.5 mm)	0 Kg	125% of calibration point	50 / 60 (50 will increase all delay timers by 20%)	5	A300; 720 VA @ 240 Vac (10 A max.)	265 Vac	4 restarts allowed in 60 s period	Over/Under Voltage: 2 s; All other faults: Manual; 2 - 225 m	Overcurrent: 5 s; Dry-well: 4 s	Check	Order