© 2018 Littelfuse Fresh Water Pumping
Littelfuse.com/Pump-Protection
28
Three-Phase Pump Protection
Fully Programmable
777-KW/HP-P2 SERIES
CUB-Current Unbalance
Threshold
2-50% or 999 (disable)
TC-Overcurrent Trip Class
2-60, J2-J60, L00-L60, oFF
RD1-Rapid-cycle Timer
0-999 seconds
RD2- Restart Delay after all
faults except underload
motor cool-down timer)
2-500 minutes
RD3-Restart Delay after
underload (dry-well
recovery timer)
2-500 minutes, A (automatic)
#RU-Number of Restarts
after underload
0, 1, 2, 3, 4, A (automatic)
ADDR-RS485 Address
A01-A99
#RF-Number of Restarts after
all faults except underload
0, 1, oc1, 2, oc2, 3, oc3, 4, oc4, A,
ocA (automatic)
COM-Communication Setting
C00-C07
GF-Ground Fault Current
Threshold
(3-20A) ÷ MULT of 12-40% of CT Primary or oFF
Input Characteristics
Supply Voltage
777-KW/HP-P2,
777-LR-KW/HP-P2,
777-MLR-KW/HP-P2
200-480VAC
777-HVR-KW/HP-P2
340-480VAC
Frequency
50/60Hz
Motor Full Load Amp Range
777-KW/HP-P2,
777-HVR-KW/HP-P2
2-20 Amps (Loops Required); 20-90 Amps
(Direct); 80-800 Amps (External CTs)
777-LR-KW/HP-P2
1-2 Amps (1 Loop Required); 2.1-9 Amps
(Direct); 10-800 Amps (External CTs)
777-MLR-KW/HP-P2
0.5-10.5 Amps (Loops Required), 5-21 (Direct),
40-740 (External CTs)
Output Characteristics
Output Contact Rating-SPDT
(Form C)
777-KW/HP-P2, 7
77-LR-KW/HP-P2,
77-MLR-KW/HP-P2
480VA@240VAC (Pilot Duty)
10A@240VAC (General Purpose)
777-HVR-KW/HP-P2
470VA@600VAC
Expected Life
Mechanical
1 x 10
6
operations
Electrical
1 x 10
5
operations at rated load
General Characteristics
Operating Temperature
Ambient Operating
-20º to 70º C (-4º to 158º F)
Ambient Storage
-40º to 80º C (-40º to 176º F)
Accuracy
Voltage
± 1%
Current
± 3% (<100A direct)
Timing
± 0.5% second
Power
± 10%
Repeatability
Voltage
± 0.5% of nominal voltage
Current
± 1% (<100A direct)
Maximum Input Power
10 W
Pollution Degree
3
Class of Protection
IP20, NEMA 1 (finger safe)
Relative Humidity
10-95%, non-condensing per IEC 68-2-3
Safety Marks
UL
UL508, UL1053
CE
IEC 60947-1, IEC 60947-5-1
CSA
C22.2 No. 14
Dimensions H
77.47 mm (3.05”);
W
97.79 mm (3.85”);
D
128.27 mm (5.05”)
Maximum conductor
size through holes
0.65” (with insulation)
Weight
1.2 lbs.
Mounting Methods
35mm DIN rail or surface mount
Dimensions
3.100
[78.74]
3.850
[97.79]
3.600
[91.44]
2.280
[57.91]
3.050
[77.47]
1.200
[30.48]
3.850
[97.79]
3.600
[91.44]
2.650
[67.31]
D
.
0.650
[16.51]
0.200
[5.08]
OPTIONAL LOOP HOLES
MAIN CONDUCTOR PASS HOLES
A
B
C
inches [millimeters]
4.700
[119.38]
5.050
[128.27]
