Introduction
The CurrentWatch™ EPRM Series is a family
of DIN-rail compatible, split-core current
sensors. Product features include a
large aperture, switch-selectable inputs
and outputs and isolation between primary and
secondary circuits. A patented technology
eliminates the use of a magnetic core and protects the
sensor against saturation and damage, which can occur
from continuous exposure to high currents. Models available
up to 400A and with 0-5/0-10V DC or 4-20 mA outputs as standard.
The EPRM Series is also available in True RMS, for working with
nonlinear loads in “noisy” power environments
.
WARNING
IN ORDER TO AVOID ELECTRIC SHOCK OR OTHER POSSIBLE INJURY:
• DO NOT USE THIS PRODUCT FOR HUMAN SAFETY APPLICATIONS. IT
WAS NOT DESIGNED, TESTED OR RECOMMENDED FOR THIS USE.
• DO NOT USE THIS PRODUCT IN HAZARDOUS LOCATIONS (E.G.
EXPLOSIVE ATMOSPHERES). IT WAS NOT DESIGNED, TESTED OR
RECOMMENDED FOR THIS USE.
• ENSURE THE PRODUCT IS PROPERLY WIRED TO THE CORRECT POWER
SUPLLY FOR THE APPLICATION. REFER TO THE SPECIFICATIONS AND
WIRING DIAGRAMS IN THIS MANUAL.
Models Covered In This Manual
Catalog Number Description
EPRM0510ASP
24V DC Aux. Powered, 0-5/0-10V Output, 10/25/50A Range
EPRM1510ASP
24V DC Aux. Powered, 0-5/0-10V Output, 50/75/100A Range
EPRM2510ASP
24V DC Aux. Powered, 0-5/0-10V Output, 100/150/200 Range
EPRM3510ASP
24V DC Aux. Powered, 0-5/0-10V Output, 200/300/400A Range
EPRM0420LSP
Loop-Powered, 4-20 mA Output, 10/25/50A Range
EPRM1420LSP
Loop-Powered, 4-20 mA Output, 50/75/100A Range
EPRM2420LSP
Loop-Powered, 4-20 mA Output, 100/150/200 Range
EPRM3420LSP
Loop-Powered, 4-20 mA Output, 200/300/400A Range
EPRMR0510ASP
24V DC Aux. Powered, True RMS, 0-5/0-10V Output, 10/25/50A
Range
EPRMR1510ASP
24V DC Aux. Powered, True RMS, 0-5/0-10V Output,
50/75/100A Range
EPRMR2510ASP
24V DC Aux. Powered, True RMS, 0-5/0-10V Output,
100/150/200 Range
EPRMR3510ASP
24V DC Aux. Powered, True RMS, 0-5/0-10V Output,
200/300/400A Range
EPRMR0420LSP
Loop-Powered, True RMS, 4-20 mA Output, 10/25/50A Range
EPRMR1420LSP
Loop-Powered, True RMS, 4-20 mA Output, 50/75/100A Range
EPRMR2420LSP
Loop-Powered, True RMS, 4-20 mA Output, 100/150/200 Range
EPRMR3420LSP
Loop-Powered, True RMS, 4-20 mA Output, 200/300/400A
Range
Patented Protection Technology
The EPRM Series of current sensors features a patented technolo-
gy that eliminates problems associated with magnetic circuits such
as core saturation. The sensor will not be damaged by momentary
periods of high current, and the output from the sensor is limited to
protect the signal input device.
Quick Install Guide
The below steps can be followed to quickly install a CurrentWatch™
EPRM Series sensor.
1. Run the wire to be monitored through the cable guide and aper-
ture
2. Mount the sensor to a standard DIN rail
3. Connect output wiring with the provided terminal block
a. Use up to 12 AWG copper wires
b. For voltage output models, make sure output load is at least
10 kilohms
4. Choose the correct current range by positioning the Range
Switch
CurrentWatch™ EPRM Series Current Sensors
Powered AC Current Sensors, Up to 400A Input
Range, Analog Outputs
Instructions Publication
P51928
Effective March 2014
Supersedes May 2010
