© 2018 Littelfuse Fresh Water Pumping
8
Submersible Pumps – Optimized Protection
Grundfos
®
Control Box
Littelfuse.com/Pump-Protection
Specifications
Functional Specifications
Adjustments/Settings
Overcurrent
125% of calibration point
Underload (dry-well)
Adjustable (70 - 90% of calibrated run power)
Overvoltage
265VAC
Undervoltage
190VAC
Number of restarts allowed
in a
60-second period
(rapid-cycling)
4
Trip Delay Times
Overcurrent
5 seconds
Dry-well
4 seconds
Restart Delay Times
Over/undervoltage
2 seconds
All other faults (dry-well
recovery
timer)
Manual, 2-225 Minutes
Input Characteristics
Supply Voltage
230VAC
Load Range
¹⁄
3
– 3 hp
Frequency
50*/60Hz
Output Characteristics
Output Contact Rating (SPST)
3 hp @ 240VAC (17 amps max.)
General Characteristics
Operating Temperature
-40º to 60º C (-40º to 140º F)
Maximum Input Power
5W
Dimensions
Fitted to Grundfos
®
Control Box
Weight
14 oz.
Mounting Methods
Grundfos
®
Control Box
Standards Passed
Electrostatic Discharge (ESD)
IEC 61000-4-2, Level 2, 4kV contact, 6kV air
*Note: 50 Hz will increase all delay timers by 20%
Installation Instructions
START
CAPACITOR
RUN
CAPACITOR
RELAY
YELLOW
RED
ORANGE
BLACK
BLACK
BLK
BLUE
SW
L1
L2
YEL
RED
BLK
RESTART DELAY/
1.5 to 3hp at 230VAC
_
+
IR
LINK
YELLOW
234-P CONNECTIONS IN GRUNDFOS
®
CONTROL BOX
234-P