Wiring Diagrams
Connect control or monitoring wires to the sensor. Use up to 14
AWG copper wire and tighten terminals to 7 in.-lbs / 0.79 N·m maxi-
mum torque. Be sure the output load does not exceed the switch
rating. The DC output models are polarity sensitive.
CAUTION!
INCANDESCENT LAMPS CAN HAVE “COLD FILAMENT INRUSH” CURRENT
OF UP TO TEN TIMES THEIR RATED AMPERAGE. USE CAUTION WHEN
SWITCHING LAMPS.
Output
Diagram
AC, Normally
Open (N.O.)
Models
DC, Normally
Open (N.O.)
Models
Ranges And Maximum Amps
Range
Jumper
Range
Maximum
Amps
Solid
Core
Split Core
6 sec.
1 sec.
None
1-6 A
1.75-6 A
400 A
600 A
Mid
6-40 A
6-40 A
500 A
800 A
High
40-175 A
40-200 A
800 A
1,200 A
Troubleshooting
Problem
Solution
Switch is
always
tripped.
The jumper may be set in a range that is too low for current being
monitored. Move jumper to the correct range.
The setpoint may be too low. Turn pot counter-clockwise to increase
setpoint.
For DC models only, polarity might be mismatched. Check polarity on
output wiring and correct as needed.
Switch may have been overloaded and contacts are burned out. Check
the output load, remembering to include inrush on inductive loads
(coils, motors, ballasts).
Switch will
not trip.
The jumper may be set in a range that is too high for current being
monitored. Move jumper to the correct range.
The setpoint may be too high. Turn pot counter-clockwise to decrease
setpoint.
The monitored current may be below the minimum required. Loop the
monitored wire several times through the aperture until the “sensed”
current rises above the minimum. The sensed amps equals “actual
amps” multiplied by the “number of loops.” Count loops on the inside
of the aperture.
For split core models, the contact area may be dirty. Open the sensor
and clean the contact area.
AC
Power
AC
Load
Monitored
Wire
Use caution when
switching lamps
(N.O. Model Shown)
DC
Power
DC
Load
Monitored
Wire
Use caution when
switching lamps
(N.O. Model Shown)
Hysteresis
Range
Setting Hysteresis
Low
<
0.01 A
Mid
<
0.1 A
High
<
0.5 A
Specifications
AC Models
DC Models
Power Supply
Self Powered–No Power Supply Needed
Output
Isolated Solid State Switch
Output Rating
Standard Models: 1.0 A @
240 VAC
Models Ending -04SC/-05SC:
3.0 A @ 120 VAC
Models Ending -06SC/07SC:
15 A @ 120 VAC
10 A @ 240 VAC
Standard Models:
0.15 A @ 30 VDC
ECSJ430SC:
0.15 A @ 30 VDC
Form C SPDT
Off-State Leakage
N.O. Models: < 10 µA
N.C. Models: 2.5 mA
N.O. Models: < 10 µA
N.C. Models: 1.4 mA
Response Time
0.47 - 2.5 seconds
Setpoint Range
Solid Core Models: 1-6, 6-40, 40-175 A
Split Core Models: 1.75-6, 6-40 and 40-200 A
Hysteresis
Low: 6%; Mid: 4%; High: 3%
Overload
1-6 A: 6 sec. @ 400 A; 1 sec. @ 600 A
6-40 A: 6 sec. @ 500 A; 1 sec. @ 800 A
40-175 A: 6 sec. @ 800 A; 1 sec. @ 1,200 A
Isolation Voltage
UL Listed to 1,270 VAC, Tested to 5,000 VAC
Frequency Range
6-100 Hz
Sensing Aperture
Solid Core, Front Terminal Models: 0.55 in. (14 mm) dia.
Solid Core, Top Terminal Models: 0.74 in. (19 mm) dia.
Split Core Models: 0.85 in. (21.6 mm) sq.
Housing
UL94 V0 Flammability Rated
Environmental
Operating Temperature: -58 to +122°F (-50 to +50°C)
Approvals
UL Listed, E117028
UL Tested to Canadian Safety Standards
CE
RoHs Compliant
(ECSJ404SC and ECSJ405SC Not Listed)
3
EATON
www.eaton.com
Instructions Publication
P51919
Effective July 2017
CurrentWatch™ ECSJ Series Current Sensors
Self-Powered AC Current Sensors with
Jumper Selectable Current Ranges
